Refereed Publications

---

Journal Publications

1. X. Ai, W. Liang, and C. Liu.
   Joint optimization of model retraining and inference services in DT-assisted edge computing.
   To appear in IEEE Transactions on Networking, vol.YY, no.XX, acceptance date: Nov., 10, 2025 [PDF] DOI: 10.1109/TON.2025.3632228

2. Y. Zhang, W. Liang, and Y. Yang.
   QoE-aware task executions on service models in DT-assisted edge computing.
   To appear in IEEE Transactions on Mobile Computing, acceptance date: October 16, 2025, [PDF] DOI: 10.1109/TMC.2025.3623582

3. Y. Qiu, M. Chen, W. Liang, L. Ai, and D. Niyato.
   Information sharing in multi-tenant metaverse via intent-driven multicasting.
   To appear in IEEE Transactions on Computers, acceptance date: August 23, 2025, [PDF] DOI: 10.1109/TC.2025.3603720

4. J. Li, J. Wang, W. Liang, X. Jia, and A. Y, Zomaya.
   Inference service fidelity maximization in DT-assisted edge computing.
   To appear in IEEE Transactions on Mobile Computing, acceptance date: August 16, 2025, [PDF] DOI: 10.1109/TMC.2025.3600390

5. Y. Qiu, M. Chen, W. Liang, L. Ai, D. Niyato, and G. Wei.
   Privacy-enhanced healthcare monitoring service refreshment in human digital twin-assisted fabric metaverse.
   IEEE Transactions on Mobile Computing, vol. 24, no. 11, pp. 11731-11747, Nov. 2025, [PDF] DOI: 10.1109/TMC.2025.3582084

6. X. Ai, W. Liang, Y. Zhang, and W. Xu.
   Fidelity-aware inference services in DT-assisted edge computing via service model retraining.
   IEEE Transactions on Services Computing, vol.~18, no.~4, pp.~2089-2102, July-Aug., 2025, [PDF] DOI: 10.1109/TSC.2025.3586126

7. Y. Zhang, W. Liang, Z. Xu, X. Jia, and Y. Yang.
   Profit maximization of delay-sensitive, differential accuracy inference services in mobile edge computing.
   IEEE Transactions on Mobile Computing, vol.24, no.7, pp.6209--6224, July, 2025, [PDF] DOI: 10.1109/TMC.2025.3540017

8. Y. Zhang, L. Wang, and W. Liang.
   Deep reinforcement learning for mobility-aware digital twin migrations in edge computing.
   IEEE Transactions on Services Computing, vol.18, no.7, pp 704--717, March/April, 2025, [PDF] DOI: 10.1109/TSC.2025.3528331

9. Z. Wang, J. Li, X. He, W. Xu, W. Liang, Z. Xu, J. Peng, P. Zhou, X. Jia, and S. Das.
   Approximation algorithm and applications for connected submodular function maximization problems.
   IEEE Transactions on Networking, vol.33, no.1, pp. 241-254, 2025, [PDF] DOI: 10.1109/TNET.2024.3477532

10. Y. Zhang, W. Liang, Z. Xu, W. Xu, and M. Chen.
    AoI-aware inference services in edge computing via digital twin network slicing.
    IEEE Transactions on Services Computing, vol.17, no.6, pp.3154-3170. Nov/Dec., 2024 [PDF] DOI: 10.1109/TSC.2024.3436705

11. Y. Li, W. Liang, Z. Xu, W. Xu, and X. Jia.
    Budget-constrained digital twin synchronization and its application on fidelity-aware queries in edge computing.
    IEEE Transactions on Mobile Computing, vol.24. no.1, pp. 165-182, 2025, [PDF] DOI: 10.1109/TMC.2024.3455357

12. J. Li, S. Guo, W. Liang, J. Wang, Q. Chen, Z. Hong, Z. Xu, W. Xu, and B. Xiao.
    AoI-aware service provisioning in edge computing for digital twin network slicing requests.
    IEEE Transactions on Mobile Computing, vol.23, no.12, pp.14607-14621, 2024, [PDF] DOI: 10.1109/TMC.2024.3449818

13. Y. Qiu, M. Chen, H. Huang, W. Liang, J. Liang, Y. Hao, and D. Niyato.
    Spotlighter: backup age-guaranteed immersive virtual vehicle service provisioning in edge-enabled vehicular metaverse.
    IEEE Transactions on Mobile Computing, vol.23, no.12, pp.13375--13391, 2024, [PDF] DOI: 10.1109/TMC.2024.3425896

14. Y. Qiu, M. Chen, W. Liang, D. Niyato, Y. Wang, Y. Li, Victor Leung, Y. Hao, L. Hu, and Y. Zhang.
    Reliable or green? continual individualized inference provisioning in fabric metaverse via multi-exit acceleration.
    IEEE Transactions on Mobile Computing, vol.23, no.12, pp.11449-11465, 2024, [PDF] DOI: 10.1109/TMC.2024.3396612

15. Y. Zhang, W. Liang, Z. Xu, and X. Jia.
    Mobility-aware service provisioning in edge computing via digital twin replica placements.
    IEEE Transactions on Mobile Computing, vol.23, no.12, pp. 11295-11311, 2024, [PDF] DOI: 10.1109/TMC.2024.3394839

16. X. Liang, W. Liang, Z. Xu, Y. Zhang, and X. Jia.
    Multiple service model state refreshments in digital twin-empowered edge computing.
    IEEE Transactions on Services Computing, vol.17, no.5, pp.2672-2686, Oct., 2024, [PDF] DOI 10.1109/TSC.2023.3341988

17. J. Li, S. Guo, W. Liang, J. Wu, Q. Chen, Z. Xu, W. Xu, and J. Wang.
    AoI-aware, digital twin-empowered IoT query services in mobile edge computing.
    IEEE/ACM Transactions on Networking, vol.32, no.4, pp.3636--3650, August, 2024, [PDF] DOI: 10.1109/TNET.2024.3395709

18. W. Ren, Z. Xu, W. Liang, H. Dai, O. Rana, P. Zhou, Q. Xia, H. Ren, M. Li, and G. Wu.
    Learning-driven service caching in MEC networks with bursty data triffic and uncertain delays.
    Computer Networks, Vol.250, 110575, pp.1-17, August, 2024, [PDF] DOI: 10.11016/j.comnet.2024.110575

19. J. Li, S. Guo, W. Liang, J. Wang, Q. Chen, W. Xu, K. Wei, and X. Jia.
    Mobility-aware utility maximization in digital twin-enabled serverless edge computing.
    IEEE Transactions on Computers, vol.73, no.7, pp.1837-1851, July, 2024, [PDF] DOI: 10.1109/TC.2024.3388897

20. S. Li, J. Li, W. Xu, J. Peng, Z. Wang, W. Liang, X. Yao, X. Jia, and S. Das.
    Maximizing network throughput in heterogeneous UAV networks.
    IEEE/ACM Transactions on Networking, vol.32, no.3, pp.2128--2142, June, 2024 [PDF] DOI: 10.1109/TNET.2023.3347557

21. J. Li, S. Guo, W. Liang, J. Wang, Q. Chen, Y. Zeng, B. Ye, and X. Jia.
    Digital twin-enabled service provisioning in edge computing via continual learning.
    IEEE Transactions on Mobile Computing, vol.23, no.6, pp.7335--7350, 2024, [PDF] DOI: 10.1109/TMC.2023.3332668

22. Y. Zhang, W. Liang, W. Xu, Z. Xu, and X. Jia.
    Cost minimization of digital twin placements in mobile edge computing.
    ACM Transactions on Sensor Networks, vol.20, no.3, Article 74, pp.1--26, 2024 [PDF] DOI:10.1145/3658449

23. W. Xu, H. Shao, Q. Shen, J. Peng, W. Huang, W. Liang, T. Liu, X-W Yao, T. Lin, and S. Das.
    Collect spatiotemporally correlated data in IoT networks with an energy-constrained UAV.
    IEEE Internet of Things J. vol.11, no.11, pp.20486--20498, 2024, [PDF] DOI 10.1109/JIOT.2024.3370295

24. J. Li, S. Guo, W. Liang, J. Wang, Q. Chen, Z. Xu, and W. Xu.
    AoI-aware user service satisfaction enhancement in digital twin-empowered edge computing.
    IEEE/ACM Transactions on Networking, vol.32, no.2, pp.1677--1690, 2024, [PDF] DOI: 10.1109/TNET.2023.3324704

25. Z. Xu, Z. Yuan, W. Liang, D. Liu, W. Xu, H. Dai, Q. Xia, and P. Zhou.
    Learning-driven algorithms for responsive AR offloading with non-deterministic rewards in Metaverse-enabled MEC.
    IEEE/ACM Transactions on Networking, vol.32, no.2, pp.1556--1572, 2024, [PDF] DOI: 10.1109/TNET.2023.3323514

26. Q. Xia, G. Wang, Z. Xu, W. Liang, and Z. Xu.
    Efficient algorithms for service chaining in NFV-enabled satellite edge networks.
    IEEE Transactions on Mobile Computing, vol.23, no.5, pp. 5677--5694, 2024, [PDF] DOI: 10.1109/TMC.2023.3312352

27. Z. Xu, H. Qiao, W. Liang, Z. Xu, Q. Xia, P. Zhou, O. Rana, and W. Xu.
    Flow-time minimization for timely data stream processing in UAV-aided mobile edge computing.
    ACM Transactions on Sensor Networks, vol.20, no.3, article 58, pp.1--28, 2024, [PDF] DOI:10.1145/3643813

28. W. Xu, C. Wang, H, Xie, W. Liang, H. Dai, Z. Xu. Z. Wang, B. Guo, and S. Das.
    Reward maximization for disaster zone monitoring with heterogeneous UAVs.
    IEEE/ACM Transactions on Networking, vol.32, no.1, pp.890--903, Feb., 2024, [PDF] DOI: 10.1109/TNET.2023.3300174

29. R. Zhang, Z. Xie, D. Yu, W. Liang, and X. Chang.
    Digital twin-assisted federated learning service provisioning over mobile edge networks.
    IEEE Transactions on Computers, vol.73, no.2, pp.586--598, 2024, [PDF] DOI: 10.1109/TC.2023.3337317

30. Z. Xu, L. Wang, W. Liang, Q. Xia, W. Xu, P. Zhou, and O. Rana.
    Age-aware data selection and aggregator placement for timely federated continual learning in mobile edge computing.
    IEEE Transactions on Computers, vol.73. no.2, pp.466-480, 2024, [PDF] DOI: 10.1109/TC.2023.3333213

31. Z. Xu, D. Li, W. Liang, W. Xu, Q. Xia, P. Zhou, O. Rana, and H. Li.
    Energy or accuracy? near-optimal user selection and aggregator placement for federated learning in MEC.
    IEEE Transactions on Mobile Computing, vol.23, no.3, pp.2470 - 2485, March, 2024, [PDF] DOI: 10.1109/TMC.2023.3262829, Suppl. Materials [PDF]

32. Z. Xu, G. Xu, H. Wang, W. Liang, Q. Xia, and S. Wang.
    Enabling streaming analytics in satellite edge computing via timely evaluation of big data queries.
    IEEE Transactions on Parallel and Distributed Systems, vol.35, no.1, pp.105 -- 122, 2024, [PDF] DOI: 10.1109/TPDS.2023.3332333

33. J. Li, S. Guo, W. Liang, Q. Chen, X. Xu, W. Xu, and A. Zomaya.
    Digital twin-assisted, SFC-enabled service provisioning in edge computing.
    IEEE Transactions on Mobile Computing, vol.23, no.1, pp.393--408, 2024, [PDF] DOI: 10.1109/TMC.2022.3227248

34. Q. Shen, J. Peng, W. Xu, Y. Sun, W. Liang, L. Chen, Q. Zhao, and X. Jia.
    Fair Communications in UAV Networks for Rescue Applications.
    IEEE Internet of Things Journal, vol. 10, no. 23, pp. 21013 -- 21025, Dec., 2023, [PDF]. DoI: 10.1109/JIOT.2023.3284813

35. J. Li, W. Liang, W. Xu, Z. Xu, X. Jia, A. Zomaya and S. Guo.
    Budget-aware user satisfaction maximization on service provisioning in mobile edge computing.
    IEEE Transactions on Mobile Computing, vol.22, no.12, pp.7057 --7069, 2023, [PDF] DOI: 10.1109/TMC.2022.3205427

36. J. Liu, J. Peng, W. Xu, W. Liang, L. Tang, P. Xi, Z. Xu, L. Zheng, and X. Jia.
    Maximizing sensor lifetime via multi-node partial-charging on sensors.
    IEEE Transactions on Mobile Computing, vol.22, no.11, pp.6571--6584, 2023, [PDF] DOI: 10.1109/TMC.2022.3200070

37. Z. Xu, L. Zhou, W. Liang, Q.Xia, W. Xu, W. Ren, H. Ren, and P. Zhou.
    Stateful serverless application placement in MEC with function and state dependencies.
    IEEE Transactions on Computers, Vol.72. No.9, pp.2701--2716, 2023, [PDF] DOI: 10.1109/TC.2023.3262947

38. Y. Tao, S. Cui, W. Xu, H. Yin, D. Yu, W. Liang, and X. Cheng.
    Byzantine-resilient federated learning at edge.
    IEEE Transactions on Computers, Vol.72. No.9, pp. 2600--2614, 2023, [PDF] DOI 10.1109/TC.2023.3257510

39. Z. Xu, Q. Xia, L. Wang, P. Zhou, J. Lui, W. Liang, W. Xu, and G. Wu.
    Stable service caching in MECs of hierarchical service markets with uncertain request rates.
    IEEE Transactions on Mobile Computing, Vol.22, No.7, pp. 4279--4296, 2023, [PDF] DOI: 10.1109/TMC.2022.3149870

40. Z. Xu, L. Zhou, S-K Chau, W. Liang, H. Dai, L. Chen, W. Xu, Q. Xia, and P. Zhou.
    Near-optimal and collaborative service caching in mobile edge.
    IEEE Transactions on Mobile Computing, Vol.22, No.7, pp.4070-4085, 2023, [PDF] DOI: 10.1109/TMC.2022.3144175

41. Y. Li, W. Liang, J. Li, X. Cheng. D. Yu, A. Zomaya, and S. Guo.
    Energy-aware, device-to-device assisted federated learning in edge computing.
    IEEE Transactions on Parallel and Distributed Systems, Vol.34. No.7, pp.2138--2154, 2023, [PDF] DOI: 10.1109/TPDS.2023.3277423

42. W. Xu, H. Xie, C. Wang, W. Liang, X. Jia, Z. Xu. P. Zhou, W. Wu, and X. Chen.
    An approximation algorithm for the h-hop independently submodular maximization problem and its applications.
    IEEE/ACM Transactions on Networking, Vol.31, no.3, pp.1216--1229, 2023, [PDF] DOI: 10.1109/TNET.2022.3210825

43. J. Li, W. Liang, Y. Li, Z. Xu, X. Jia, and S. Guo.
    Throughput maximization of delay-aware DNN inference in edge computing by exploring DNN model partitioning and inference parallelism.
    IEEE Transactions on Mobile Computing, Vol.22, No.5, pp.3017-3030, 2023, [PDF] DOI: 10.1109/TMC.2021.3125949

44. J. Li, W. Liang, W. Xu, Z. Xu, Y. Li, and X. Jia.
    Service home identification of multiple-source IoT applications in edge computing.
    IEEE Transactions on Services Computing, Vol.16, no.2, pp. 1417 -- 1430, 2023, [PDF] DOI 10.1109/TSC.2022.3176576

45. Y. Li, W. Liang, W. Xu, Z. Xu, X. Jia, Y. Xu and H. Kan.
    Data collection maximization in IoT sensor networks via an energy-constrained UAV.
    IEEE Transactions on Mobile Computing, Vol.22. No.1 pp. 159 -- 174, 2023, [PDF] DOI: 10.1109/TMC.2021.3084972

46. Z. Xu, D. Zhao, W. Liang, O. Rana, P. Zhou, M. Li, W. Xu, H. Li, and Q. Xia.
    HierFedML: aggregator placement and UE assignment for hierarchical federated learning in mobile edge computing.
    IEEE Transactions on Parallel and Distributed Systems, vol.34. No.1, pp.328--345, 2023, [PDF] DOI: 10.1109/TPDS.2022.3218807

47. Z. Xu, H. Ren, W. Liang, Q. Xia, W. Zhou, P. Zhou, W. Xu, G. Wu, and M. Li.
    Near optimal learning-driven mechanisms for stable NFV markets in multi-tier cloud networks.
    IEEE/ACM Transactions on Networking, Vol.30, no.6, pp. 2601 -2615, 2022, [PDF] DOI: 10.1109/TNET.2022.3179295

48. Q. Xia, W. Ren, Z. Xu, X. Wang, and W. Liang.
    When edge caching meets a budget: near optimal service delivery in multi-tiered edge clouds.
    IEEE Transactions on Services Computing, vol.15, no. 6, pp. 3634--3648, 2022, [PDF] DOI 10.1109/TSC.2021.3091462

49. Y. Ma, W. Liang, M. Huang, W. Xu, and S. Guo.
    Virtual network function service provisioning in MEC via trading off the usages between computing and communication resources.
    IEEE Transactions on Cloud Computing , Vol.10, No.4, pp. 2949 - 2963, 2022. [PDF], DOI:10.1109/TCC.2020.3043313

50. W. Liang, Y. Ma, W. Xu, Z. Xu, X. Jia, and W. Zhou.
    Request reliability augmentation with service function chain requirements in mobile edge computing.
    IEEE Transactions on Mobile Computing, Vol.21, no. 12, pp. 4541-4554, 2022. [PDF], [suppl. material PDF] DOI: 10.1109/TMC.2021.3081681

51. Y. Li, W. Liang, and J. Li.
    Profit driven service provisioning in edge computing via deep reinforcement learning.
    IEEE Transactions on Network and Service Management, Vol.19, No. 3, pp. 3006-3019, 2022, [PDF] DOI 10.1109/TNSM.2022.3159744

52. H. Zhu, SCK. Chau, G. Guarddin, and W. Liang.
    Integrating IoT-sensing and crowdsensing with privacy: prvacy-preserving hybrid sensing for smart cities.
    ACM Transactions on Internet of Things, Vol.3, No.4, Article 31, pp. 31:1 -- 31:30, 2022, [PDF] DOI 10.1145/35449550

53. Q. Guo, J. Peng, W. Xu, W. Liang, X. Jia, Z. Xu, Y. Yang and M. Wang.
    Minimizing the longest tour time among a fleet of UAVs for disaster area surveillance.
    IEEE Transactions on Mobile Computing, Vol.24, No.7, pp. 2451 - 2465, 2022, [PDF] DOI: 10.1109/TMC.2020.3038156

54. M. Li, J. Peng, S. Ju, Q. Liu, H. Li, W. Liang, J. X. Yu, and W. Xu.
    Efficient algorithms for finding diversified top-k structural hole spanners in social networks.
    Information Sciences, Vol.602, pp. 236-258, 2022, [PDF] DOI: 10.1016/j.ins.2022.04.046

55. J. Li, W. Liang, W. Xu, Z. Xu, X. Jia, W. Zhou, and J. Zhao.
    Maximizing user service satisfaction for delay-sensitive IoT applications in edge computing.
    IEEE Transactions on Parallel and Distributed Systems, Vol.33, no.5, pp.1199-1212, May, 2022, [PDF] DOI: 10.1109/TPDS.2021.3107137

56. W. Xu, Y. Sun, R. Zou, W. Liang, Q. Xia, F. Shan, T. Wang, X. Jia, and Z. Li.
    Throughput maximization of UAV networks.
    IEEE/ACM Transactions on Networking, Vol.30, No.2, pp.881-995, April, 2022, [PDF] . DOI:10.1109/TNET.2021.3125982

57. W. Xu, T. Xiao, J. Zhang, W. Liang, Z. Xu, X. Liu, X. Jia, and S, K. Das.
    Minimizing the deployment cost of UAVs for delay-sensitive data collection in IoT networks.
    IEEE/ACM Transactions on Networking, Vol 30, No.2, pp.812-825, April, 2022, [PDF] . DOI: 10.1109/TNET.2021.3123606

58. Z. Xu, L. Zhou, H. Dai, W. Liang, W. Zhou, P. Zhou, W. Xu, and G. Wu.
    Energy-aware collaborative service caching in a 5G-enabled MEC with uncertain payoffs.
    IEEE Transactions on Communications, vol.70, no.2, pp.1058-1071, Feb., 2022, [PDF] DOI: 10.1109/TCOMM.2021.3125034

59. J. Li, W. Liang, Z. Xu, X. Jia, and W. Zhou.
    Service provisioning for multi-source IoT applications in mobile edge computing.
    ACM Transactions on Sensor Networks, Vol.18, No.2, Article 17, pp. 17:1--17:25, May, 2022, [PDF] DOI: 10.1145/3484200

60. Y. Ma, W. Liang, J. Li, X. Jia, and S. Guo.
    Mobility-aware and delay-sensitive service provisioning in mobile edge-cloud networks.
    IEEE Transactions on Mobile Computing, Vol.21, No,1, pp. 196--210, 2022, [PDF] DOI: 10.1109/TMC.2020.3006507

61. M. Huang, W. Liang, Y. Ma, and S. Guo.
    Maximizing throughput of delay-sensitive NFV-enabled request admissions via virtualized network function placement.
    IEEE Transactions on Cloud Computing, Vol.9, no.4, pp1535 --1548, Oct-Dec, 2021, DOI:10.1109/TCC.2019.2915835, [PDF]

62. W. Xu, W. Liang, X. Jia, H. Kan, Y. Xu, and X. Zhang.
    Minimizing the maximum charging delay of multiple mobile chargers under the multi-node energy charging scheme.
    IEEE Transactions on Mobile Computing, Vol.20, No.5, pp.1846-1861, 2021, [PDF] DOI: 10.1109/TMC.2020.2973979

63. Z. Xu, W. Gong, Q. Xia, W. Liang, O. Rana, and G. Wu.
    NFV-enabled IoT service provisioning in mobile edge clouds.
    IEEE Transactions on Mobile Computing, Vol.20, No.5, pp.1892-1906, 2021, [PDF] DOI: 10.1109/TMC.2020.2972530

64. J. Li, W. Liang, and Y. Ma.
    Robust service provisioning with service function chain requirements in mobile edge computing.
    IEEE Transactions on Network and Service Management, Vol.18, No. 2, pp.2138 - 2153, June, 2021. [PDF], DOI: 10.1109/TNSM.2021.3062650

65. Z. Xu, Z. Zhang, J. C.S. Lui, W. Liang, Q. Xia, P. Zhou, W. Xu, and G. Wu.
    Affinity-aware VNF placement in mobile edge clouds via leveraging GPUs.
    IEEE Transactions on Computers , Vol.70, No.12, pp.2234 --2248, 2021. [PDF], DOI: 10.1109/TC.2020.3041629

66. Z. Guo, J. Peng, W. Xu, W. Liang, G. Wu, Z. Xu, B. Guo, and Y. Wu.
    Minimizing redundant sensing data transmissions in energy-harvesting sensor networks via exploring spatial data correlations.
    IEEE Internet of Things Journal, Vol.8, No.1, pp. 512--527, 2021. [PDF]. DoI: 10.1109/JIOT.2020.3004554

67. Z. Xu, L. Zhao, W. Liang, O. Rana, P. Zhou, Q. Xia, W. Xu, and G. Wu.
    Energy-aware inference offloading for DNN-driven applications in mobile edge clouds.
    IEEE Transactions on Parallel and Distributed Systems , Vol.32, No.4, pp.799-814, April, 2021. [PDF], DOI: 10.1109/TPDS.2020.3032443

68. W. Xu, W. Liang, Z. Xu, J. Peng, D. Peng, T. Liu, X. Jia, and S. Das.
    Approximation algorithms for the generalized team orienteering problem and its applications.
    IEEE/ACM Transactions on Networking, Vol.29, No.1, pp.176--189, Feb., 2021, [PDF]

69. H. Huang, S. Guo, W. Liang, K. Wang, and Y. Okabe.
    Coflow-like online data acquisition from Low-Earth-Orbit datacenters.
    IEEE Transactions on Mobile Computing, vol.19, no. 12, pp.2743 -- 2760, 2020, [PDF] DoI: 10.1109/TMC.2019.2936202

70. L. Deng, W. Xu, W. Liang, J. Peng, Y. Zhou, L. Duan, and S, K. Das.
    Approximation algorithms for the min-max cycle cover problem with neighborhoods.
    IEEE/ACM Transactions on Networking, Vol.28, No.4, pp. 1845 --1858, August, 2020, [PDF] [Suppl Materials PDF] . DOI: 10.1109/TNET.2020.2999630

71. H. Ren, Z.Xu, W. Liang, Q. Xia, P. Zhou, O. Rana, A. Galis, and G. Wu.
    Efficient algorithms for delay-aware NFV-enabled multicasting in mobile edge clouds with resource sharing.
    IEEE Transactions on Parallel and Distributed Systems , Vol.31, No.9, pp. 2050--2066, 2020. [PDF], DOI: 10.1109/TPDS.2020.2983918

72. M. Jia, W. Liang, Z. Xu, M. Huang, and Y. Ma.
    QoS-aware cloudlet load balancing in wireless metropolitan area networks.
    IEEE Transactions on Cloud Computing, Vol.8, no.2, pp. 623--634, 2020.[PDF]

73. H. Huang, P. Li, S. Guo, W. Liang, and K. Wang.
    Near-optimal deployment of service chains by exploiting correlations between network functions.
    IEEE Transactions on Cloud Computing, Vol.8, no. 2, pp. 585--595, 2020.[PDF]

74. Z. Xu, Z. Zhang, W. Liang, Q. Xia, O. F. Rana, and G. Wu.
    QoS-aware VNF placement and service chaining for IoT applications in multi-tier mobile edge networks.
    ACM Transactions on Sensor Networks , Vol.16, No. 3, Article 23:1--23:27, 2020. [PDF], DoI: 10.1145/3387705

75. M. Huang, W. Liang, X. Shen Y. Ma, and H. Kan.
    Reliability-aware virtualized network function services provisioning in moblle edge computing.
    IEEE Transactions on Mobile Computing, Vol.19, no.11, pp. 2699--2713, 2020, [PDF]

76. J. Li, W. Liang, M. Huang and X. Jia.
    Reliability-aware network service provisioning in mobile edge-cloud networks.
    IEEE Transactions on Parallel and Distributed Systems, Vol.31, No. 7, pp. 1545--1558, 2020. [PDF]

77. G. Yuan, Z. Xu, B. Yang, W. Liang, W-K. Chai, D. Tuncer, A. Galis, G. Pavlou, and G. Wu.
    Fault tolerant placement of stateful VNFs and dynamic fault recovery in cloud networks.
    Computer Networks, Vol.166, pp. 1--18, 2020, [PDF]

78. Y. Ma, W. Liang, J. Wu and Z. Xu.
    Throughput maximization of NFV-enabled multicasting in mobile edge cloud networks.
    IEEE Transactions on Parallel and Distributed Systems, Vol.31, No.2, pp. 393--407, 2020. [PDF]

79. L. Tao, X. Zhang, and W. Liang.
    Efficient algorithms for mobile sink aided data collection from dedicated and virtual aggregation nodes in energy harvesting wireless sensor networks.
    IEEE Transactions on Green Communications and Networking, Vol.3, No.4, pp. 1058--1071, 2019, [PDF]

80. Q. Xia, Z. Xu, W. Liang, S. Yu, S. Guo, and A. Zomaya.
    Efficient data placement and replication for QoS-aware approximate query evaluation of big data analytics.
    IEEE Transactions on Parallel and Distributed Systems, Vol.30, No.12, pp. 2677 --2691, 2019, [PDF].

81. Z. Xu, W. Liang, M. Jia, M. Huang, and G. Mao.
    Task offloading with network function services in a mobile edge-cloud network.
    IEEE Transactions on Mobile Computing, Vol.18, No. 11, pp.2672--2685, 2019, [PDF].

82. H. Huang, S. Guo, W. Liang, K. Wang, and A. Zomaya.
    Green data-collection from geo-distributed IoT networks through low-earth-orbit satellites.
    IEEE Transactions on Green Communications and Networking, Vol.3, No.3, pp. 803--816, September, 2019, [PDF]

83. W. Xu, T. Li, W. Liang, J. Yu, N. Yang, and S. Gao.
    Identifying structural hole spanners to maximally block information propagation.
    Information Sciences, Vol.505, pp100--126, 2019. [PDF].

84. R Zhang, J. Peng, W. Xu, W. Liang, Z. Li, and T. Wang.
    Utility maximization of temporally-correlated sensing data in energy harvesting sensor networks.
    IEEE Internet of Things Journal, Vol.6, no.3, pp.5411-5422, June, 2019, [PDF].

85. Z. Xu, W. Liang, M. Huang, M. Jia, S. Guo, and A. Galis.
    Efficient NFV-enabled multicasting in SDNs.
    IEEE Transactions on Communications, Vol.67, No. 3, pp.2052 --2070, 2019, [PDF].

86. Y. Liang, W. Xu, W. Liang, J. Peng, X. Jia, Y. Zhou, and L Duan.
    No-redundant information collection in rescue applications via an energy-constrained UAV.
    IEEE Internet of Things Journal, Vol.6, No.2, pp.2945--2958, 2019. [PDF].

87. Y. Ma, W. Liang, Z. Xu, and S. Guo.
    Profit maximization for admitting requests with network function services in distributed clouds.
    IEEE Transactions on Parallel and Distributed Systems, Vol.30, No.5, pp.1143--1157, 2019. [PDF].

88. P. Duan, G. Mao, W. Liang, and G. Zhang.
    A unified spatio-temporal model for short-term traffic flow prediction.
    IEEE Transactions on Intelligent Transpostion Systems, Vol.20, No.9, pp.3212 -3223, 2019, [PDF].

89. Q. Zhang, W. Xu, W. Liang, J. Peng, T. Liu, and T. Wang.
    An improved algorithm for dispatching the minimum number of electric charging vehicles for wireless sensor networks.
    Wireless Networks, Vol.25, pp.1371 -- 1384, 2019, [PDF].

90. W. Xu, W. Liang, X. Jia, Z. Xu, L. Zheng and Y. Liu.
    Maximizing sensor lifetime with the minimal service cost of a mobile charger in wireless sensor networks.
    IEEE Transactions on Mobile Computing, Vol.17, No.11, pp.2564--2577, 2018, [PDF].

91. Z. Xu, W. Liang, and Q. Xia.
    Efficient embedding of virtual networks to distributed clouds via exploring periodic resource demands.
    IEEE Transactions on Cloud Computing, Vol.6, No.3, pp.694 -- 707, July-Sept, 2018.[PDF]

92. Z. Xu, W. Liang, A. Galis, Y. Ma, Q. Xia and W. Xu.
    Throughput optimization for admitting NFV-enabled requests in clould networks.
    Computer Networks, Vol.141, pp15--29, 2018, [PDF].

93. Y. Ma, W. Liang, and W. Xu.
    Charging utility maximization in wireless rechargeable sensor networks by charging multiple sensors simultaneously.
    IEEE/ACM Transactions on Networking, Vol.26, No.4, pp.1591--1604, August, 2018, [PDF].

94. M. Rezvani, W. Liang, C. Liu, and J. X. Yu.
    Efficient detection of overlapping communities using asymmetric triangle cuts.
    IEEE Transactions on Knowledge and Data Engineering, Vol.30, no.11, pp.2093 -- 2105, 2018. [PDF].

95. M. Jia, W. Liang, M. Huang, Z. Xu, and Y. Ma.
    Routing cost minimization and throughput maximization of NFV-enabled unicasting in Software-Defined Networks.
    IEEE Transactions on Network and Service Management, Vol.15, No.2, pp.732--745, 2018. [PDF]

96. J. Chen, G. Mao, C. Li, W. Liang and D. Zhang.
    Capacity of cooperative vehicular networks with infrastructure support: multi-user case.
    IEEE Transactions on Vehicular Technology, Vol.67, No.2, pp. 1546--1560, Febuary, 2018. [PDF].

97. M. Huang, W. Liang, Z. Xu, W. Xu, S. Guo, and Y. Xu.
    Online unicasting and multicasting in software-defined networks.
    Computer Networks, Vol.132, pp 26--39, 2018. [PDF]

98. W. Liang, Z. Xu, W. Xu, G. Shi, G. Mao, and S. Das.
    Approximation algorithms for charging reward maximization in rechargeable sensor networks via a mobile charger.
    IEEE/ACM Transactions on Networking, Vol.25, No.5, pp.3161-3174, Oct., 2017. [PDF] Suppl. Materials [PDF]

99. M. Jia, J. Cao, and W. Liang.
    Optimal cloudlet placement and user to cloudlet allocation in wireless metropolitan area networks.
    IEEE Transactions on Cloud Computing, Vol.5, No. 4, pp.725--737, Oct.-Dec., 2017.[PDF].

100. M. Huang, W. Liang, Z. Xu, and S. Guo.
     Efficient algorithms for throughput maximization in software-defined networks with consolidated middleboxes.
     IEEE Transactions on Network and Service Management, Vol.14, No.3, pp631--645, 2017. [PDF]

101. T. Zou, W. Xu, W. Liang, J. Peng, Y. Cai, and T. Wang.
     Improving charging capacity for wireless sensor networks by deploying a single mobile vehicle with multiple removable chargers.
     J. Ad Hoc Networks, Vol.63, pp.79--90, 2017.[PDF].

102. W. Xu, M. Rezvani, W. Liang, J.X. Yu, and C. Liu.
     Efficient algorithms for the identification of top-k structural hole spanners in large social networks.
     IEEE Transactions on Knowledge and Data Engineering , vol.29, no.5, pp.1017-1030, 2017. [PDF].

103. Q. Xia, W. Liang, and Z. Xu.
     Data locality-aware big data query evaluation in distributed clouds.
     Computer Journal, Vol.60, no 6, pp.791-809, 2017, [PDF].

104. Q. Xia, W. Liang, and Z. Xu.
     The operational cost minimization in distributed clouds via community-aware user data placements of social networks.
     Computer Networks, Vol.112, pp.263-278, 2017, [PDF].

105. W. Xu, W. Liang, J. Peng, Y. Liu, and Y. Yang.
     Maximizing charging satisfaction of smartphone users via wireless energy transfer.
     IEEE Transactions on Mobile Computing, (TMC), Vol.16, No 4, pp.990-1004, 2017, [PDF].

106. X. Ye and W. Liang.
     Charging utility maximization in wireless rechargeable sensor networks.
     Wireless Networks, Vol.23, No.7, pp. 2069-2081, 2017. [PDF].

107. W. Xu and W. Liang.
     Minimizing the service cost of mobile chargers while maintaining the perpetual operations of WRSNs (a book chapter).
     A book entitled Wireless Power Transfer Algorithms, Technologies and Applications in Ad Hoc Communication Networks, ISBN 978-3-319-46810-5, Springer, 2016.
     S. Nikoletseas et al. (eds.), pp. 389-431, [PDF].

108. H. Huang, S. Guo, W. Liang, K. Li, B. Ye, and W. Zhuang.
     Near-optimal routing protection for in-band software-defined heterogeneous networks.
     IEEE Journal on Selected Areas in Communications, (IEEE JSAC), Vol.34,pp.2918--2934, 2016, [PDF].

109. Z. Xu, W. Liang, W. Xu, M. Jia, and S. Guo.
     Efficient algorithms for capacitated cloudlet placements.
     IEEE Transactions on Parallel and Distributed Systems, Vol.27, No.10, pp.2866-2880, 2016 [PDF].

110. W. Xu, W. Liang, X. Lin, and G. Mao.
     Efficient scheduling of multiple mobile chargers for wireless sensor networks.
     IEEE Transactions on Vehicular Technology, Vol.65, No.9, pp7670-7683, 2016. [PDF].

111. W. Liang, W. Xu, X. Ren, X. Jia, and X. Lin.
     Maintaining large-scale rechargeable sensor networks perpetually via multiple mobile charging vehicles.
     ACM Transactions on Sensor Networks, Vol.12, No. 2, Article 14, 2016. [PDF].

112. W. Xu, W. Liang, X. Lin, and J. X. Yu.
     Finding top-k influential users in social networks under the structural diversity model.
     Information Sciences, Vol.355-356, pp.110-126, 2016. [PDF].

113. Q. Xia, Z. Xu, W. Liang, and A. Zomaya.
     Collaboration- and fairness-aware big data management in distributed clouds.
     IEEE Transactions on Parallel and Distributed Systems, Vol.27, No.7, pp.1941--1953, 2016. [PDF].

114. P. Wang, G. Mao, Z. Lin, M. Ding, W. Liang, X. Ge, and Z. Lin.
     Performance analysis of raptor codes under maximum likelihood decoding.
     IEEE Transactions on Communications, Vol.64, No.3, pp. 906--917, 2016. [PDF].

115. H. Huang, S. Guo, P. Li, W. Liang, and A. Zomaya.
     Cost minimization for rule caching in software defined networks.
     IEEE Transactions on Parallel and Distributed Systems, Vol.27, No.4, pp.1007--1016, 2016.[PDF].

116. X. Xu, W. Liang, X. Jia and W. Xu.
     Network throughput maximization in unreliable wireless sensor networks with minimal remote data transfer cost.
     J. Wireless Communications and Mobile Computing, Vol.26, pp.1176--1191, 2016.[PDF].

117. Z. Xu and W. Liang.
     Operational cost minimization of distributed data centers through the provision of fair request rate allocations while meeting different user SLAs.
     Computer Networks, Vol 83, pp. 59-75, 2015.[PDF].

118. X. Ren, W. Liang, and W. Xu.
     Data collection maximization in renewable sensor networks via time-slot scheduling.
     IEEE Transactions on Computers, Vol.64, No.7, 1870-1883, 2015. [PDF].

119. X. Ren, W. Liang, and W. Xu.
     Quality-aware target coverage in energy harvesting sensor networks.
     IEEE Transactions on on Emerging Topics in Computing, Special issue:Emerging Mobile and Ubiquitous Systems, Vol.3, No. 1, pp.8--21, 2015. [PDF].

120. W. Xu, W. Liang, and X. Lin.
     Approximation algorithms for min-max cycle cover problems.
     IEEE Transactions on Computers, Vol.64, No. 3, pp.600-613, 2015. [PDF]

121. X. Xu, W. Liang, and Z. Xu.
     Remote monitoring cost minimization for an unreliable sensor network with guaranteed network throughput.
     Information Processing in Agriculture, Vol.1, pp 83-94, Elsiver, 2014.[PDF].

122. Z. Xu and W. Liang.
     Collusion-resistant repeated double auctions for relay assignment in cooperative networks.
     IEEE Transactions on Wireless Communications, Vol.13, pp 1196-1207, 2014. [PDF].

123. B. Chen, W. Liang, and J. X. Yu.
     Energy-efficient top-k query evaluation and maintenance in wireless sensor networks.
     Wireless Networks, Vol 20, pp 591--610, Springer, 2014.[PDF].

124. W. Liang, X. Ren, X. Jia, and X. Xu.
     Monitoring quality maximization through fair rate allocation in harvesting sensor networks.
     IEEE Transactions on Parallel and Distributed System, Vol.24, pp. 1827--1840, 2013.[PDF].

125. F. Shan, W. Liang, J. Luo, and X. Shen.
     Network lifetime maximization for time-sensitive data gathering in wireless sensor networks.
     Computer Networks, Vol.57, pp. 1063--1077, April, 2013.[PDF].

126. W. Liang, P. Schweitzer, and Z. Xu.
     Approximation algorithms for capacitated minimum spanning forest problems in wireless sensor networks with a mobile sink.
     IEEE Transactions on Computers, Vol.62, pp.1932--1944, Oct, 2013.[PDF].

127. W. Liang, J. Luo, and X. Xu.
     Network lifetime maximization for time-sensitive data gathering in wireless sensor networks with a mobile sink.
     J. Wireless Communications and Mobile Computing, Vol.13, pp. 1263--1280, Wiley-Blackwell publisher, 2013.[PDF].

128. O. Jerew, K. L. Blackmore, and W. Liang.
     Mobile base station and clustering to maximize network lifetime in wireless sensor networks.
     J. of Electrical and Computer Engineering, Vol.XX, Hindawi Pub Corp., 2012.[PDF].

129. B. Chen, W. Liang, and J. Yu.
     Energy-efficient skyline query optimization in wireless sensor networks.
     Wireless Networks, Springer, Vol.18, pp985--1004, 2012.[PDF].

130. G. A. Shah, W. Liang, and O. B. Akan.
     Cross-layer framework for QoS support in wireless multimedia sensor networks.
     IEEE Transactions on Multimedia, Vol.14, No.5, October, pp.1442-1455, 2012.[PDF].

131. W. Liang.
     Constrained resource optimization in large-scale wireless sensor networks with mobile sinks.
     J. of Communications, Academy Publisher, Vol.7, July, pp.494--499, 2012.[PDF].

132. W. Liang, Y. Xu, J. Shi, and J. Luo.
     Aggregate node placement for maximizing network lifetime in sensor networks.
     J. Wireless Communications and Mobile Computing, Vol.12, pp. 219-235, Wiley-Blackwell publisher, 2012.[PDF].

133. W. Liang, B. Chen and J. Yu.
     Top-k query evaluation in sensor networks under query response time constraint.
     Information Sciences, Vol.181, no 4, pp 869--882, Elsevier, 2011.[PDF].

134. W. Liang, R. Brent, Y. Xu, and Q. Wang.
     Minimum-energy all-to-all multicasting in wireless ad hoc networks.
     IEEE Transactions on Wireless Communications, Vol.8, no. 11, pp 5490-5499, Nov., 2009.[PDF].

135. Y. Liu and W. Liang.
     Online multicasting in WDM network with shared splitter bank.
     Photonic Network Communications, Vol.17, pp.1--9, Springer, 2009. [PDF]

136. X. Shen, J. Lou, W. Liang, and J Luo.
     Deadline guaranteed packet scheduling for overloaded traffic in input-queued switches.
     Theoretical Computer Sciences, Vol.409, pp.477-485, Elsiver, Dec., 2008. [PDF]

137. H-C Liu, J. X. Yu and W. Liang.
     Safety, domain independence and translation of complex value database queries.
     Information Sciences , Vol. 178, No. 12, pp.2507-2533, June, 2008. [PDF].

138. Z. Tu and W. Liang.
     Energy-efficient aggregate query evaluation in wireless sensor networks.
     International Journal of Ad Hoc & Sensor Wireless Networks , Vol. 3, No. 1, Januray, 2007. [PDF].

139. W. Liang and Y. Liu.
     On-line disjoint path routing for network capacity maximization in energy-constrained ad hoc networks.
     Ad Hoc Networks Journal , Vol. 5, No.2, pp. 272--285, March, Elsevier, 2007. [PDF].

140. W. Liang and Y. Liu.
     On-line data gathering for maximizing network lifetime in sensor networks.
     IEEE Transactions on Mobile Computing, Vol.6, No.1, pp.2--11, January, 2007. [PDF].

141. X. Zhang, W. Liang and H. Jiang.
     Flow equivalent trees in undirected node-edge-capacitated planar graphs.
     Inform. Proc. Lett., Vol. 100, pp.110--115, Nov., 2006. [PDF].

142. W. Liang and X. Guo.
     On-line multicasting for network capacity maximization in energy-constrained ad hoc networks.
     IEEE Transactions on Mobile Computing , Vol.5, No. 9, Sept, pp.1215--1227, 2006.[PDF].

143. W. Liang and X. Shen.
     A general approach for all-to-all routing in multihop WDM optical networks.
     IEEE/ACM Transactions on Networking , Vol.14, pp.914--923, Aug., 2006. [PDF].

144. W. Liang.
     Approximate minimum-energy multicasting in wireless ad hoc networks.
     IEEE Transactions on Mobile Computing , Vol. 5, No. 4, pp. 377-387,2006.[PDF].

145. A. Vishwanath and W. Liang.
     On-line routing in WDM-TDM switched optical mesh networks.
     Photonic Network Communications , Vol.11, pp286-299, Springer, 2006.[PDF]

146. W. Liang and X. Shen
     Finding multiple routing paths in wide-area WDM networks.
     Computer Communications, Vol 28, pp. 811--818, 2005, [PDF] .

147. Y. Wan and W. Liang.
     On the minimum number of wavelengths in multicast trees in WDM networks.
     Networks, An International Journal ,Vol 45, pp.42--48, 2005.[PDF].

148. Y. Yang and W. Liang.
     The minimum number of vertics with girth 6 and degree set D={r,m}.
     Discrete Mathematics , Vol 28, pp. 249--258, 2003.[PDF].

149. W. Liang and J. X. Yu.
     Parallel maintenance of materialized views on personal computer clusters.
     International Journal of Parallel and Distributed Systems and Networks , ACTA Press, Vol 5, pp. 147--154, 2002,[PDF] (invited paper).

150. W. Liang and X. Shen.
     Permutation routing in all-optical product networks.
     IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, Vol.49, 533--538, Apr., 2002, [PDF].

151. W. Liang, R. P. Brent and H. Shen.
     Fully dynamic maintenance of k-connectivity in parallel.
     IEEE Transactions on Parallel and Distributed Systems, Vol.12, 846--864, Aug., 2001, [PDF].

152. W. Liang.
     Finding the k most vital edges with respect to minimum spanning trees for fixed k.
     Discrete Applied Mathematics, Vol.113, 319--327,2001, [PDF].

153. W. Liang, H. Wang, and M. Orlowska.
     Materialized view selection under the maintenance time constraint.
     Data and Knowledge Engineering, Vol.37, 203--216, 2001, [PDF].

154. Y. Han, W. Liang, and X. Shen.
     Very fast parallel algorithms for approximate edge colouring.
     Discrete Applied Mathematics, Vol.108, 227--238, 2001, [PDF].

155. W. Liang, X. Shen and Qing Hu.
     Finding the most vital edge for graph minimization problems on meshes and hypercubes.
     International Journal of Parallel and Distributed Systems and Networks, Vol.3, No 4, 197--205, ACTA Press, 2000, [PDF] .

156. W. Liang and X. Shen.
     Improved lightpath (wavelength) routing in large WDM networks.
     IEEE Transactions on Communications, Vol. 48, No. 9, 1571--1579, 2000, [PDF], Slides.

157. W. Liang, H. Wang, and M. Orlowska.
     Range sum queries in dynamic OLAP data cubes.
     Data and Knowledge Engineering, Vol. 34, No. 1, 21--38, 2000, [PDF].

158. W. Liang and M. Orlowska.
     Computing multidimensional aggregates in parallel.
     Informatica, An International Journal of Computing and Informatics, Vol. 24, No. 1, 107--115, 2000, [PS].

159. W. Liang, M. Orlowska, and J. X. Yu.
     Optimizing multiple dimensional queries simultaneously in multidimensional databases.
     VLDB Journal, Vol. 8, No. 3/4, 319--338. 2000, [PDF].

160. W. Liang, H. Li, H. Wang and M. Orlowska.
     Making multiple views self-maintainable in a data warehouse.
     Data and Knowledge Engineering, Vol. 30, 121--134, 1999, [PDF].

161. W. Liang, G. Havas, and A. Street.
     Finding a low-diameter and low-weight k-connected subgraph.
     Congressus Numerantium, Vol. 136, 161--175, Dec., 1999, [PS] .

162. W. Liang and H. Shen.
     Multicast in large WDM networks.
     Parallel and Distributed Computing Practices, Vol. 2, 315--322, Nov., 1999, [PS] and [DVI].

163. H. Shen, W. Liang and J. Ng.
     Efficient computation of frequent itemsets in a subcollection of multiple set families.
     Informatica, An International Journal of Computing and Informatics, Vol. 23, No. 4, 543--548, 1999, [PS].

164. H. Shen, D. Evans, W. Liang and Y. Wang.
     Multiple multicasting in wide-area fiber-optic networks.
     IEICE Transactions on Information and Systems, Vol. E82-D, No. 6, 1074--1078, 1999, [PDF].

165. X. Shen, W. Liang and Q. Hu.
     Embedding between 2-D meshes of the same size.
     IEEE Transactions on Computers, Vol. 46, 880--889, Aug., 1997, [PDF].

166. H. Shen and W. Liang.
     Efficient enumeration of all minimal separators in a graph.
     Theoretical Computer Sciences, Vol. 180, 169--180, July, 1997, [PDF].

167. W. Liang and X. Shen.
     Finding the k most vital edges in the minimum spanning tree problem
     Parallel Computing, Vol. 23, 1889--1907, Dec., 1997, [PDF].

168. W. Liang, B. McKay and H. Shen.
     NC algorithms for dynamically solving the all pairs shortest paths problem and related problems.
     Information Processing Letters, Vol. 58, 149--155, May, 1996, [PDF].

169. Q. Hu, X. Shen and W. Liang.
     Optimally routing LC permutations on k-extra-stage Cube-type Networks.
     IEEE Transaction on Computers, Vol. 45, 97--103, January, 1996, [PDF].

170. W. Liang, X. Shen and Q. Hu.
     Parallel algorithms for the edge-colouring and the edge-coloring update problems.
     Journal of Parallel and Distributed Computing, Vol. 32, 66--73, 1996, [PDF].

171. W. Liang
     An NC algorithm for the approximate edge-coloring problem.
     Information Processing Letters, Vol. 55, 333--338, 1995, [PDF].

172. X. Shen, Q. Hu and W. Liang.
     Embedding K-ary complete trees into hypercubes.
     Journal of Parallel and Distributed Computing, Vol. 24, 100--106, 1995, [PDF].

173. X. Shen, Q. Hu and W. Liang.
     Realization of an arbitrary permutation on a hypercube.
     Information Processing Letters, Vol. 51, 237--243, 1994. [PDF].

---

Conference Publications

1. X. Ai and W. Liang.
   Freshness-aware inference services in edge computing via offloading or local processing.
   Proc of 50th IEEE Conference on Local Networks, (LCN'25), IEEE, Oct. 14-16, 2025. [PDF]

2. W. Xu, Y. Cao, D. Huang, W. Liang, J. Zhang, T. Liu, J. Peng, X. Jia, and Z. Xu.
   Weighted monitoring interval minimization for disaster surveillance with a UAV.
   Proc of 45th IEEE International Conference on Distributed Computing Systems, (ICDCS'25), IEEE, July, 2025.[PDF]

3. J. Li, J. Wang, W. Liang, S. Das, and Q. Chen.
   Improving the freshness of digital twins in edge computing.
   Proc of The 19th International Conference on Wireless Artificial Intelligent Computing Systems and Applications (WASA'25), Springer, June, 2025.[PDF]

4. Q. Chen, Z. Ni, J. Li, and W. Liang.
   Utility maximization of multi-federated learning in edge computing with personalized privacy preservation.
   Proc of 2025 IEEE International Conference on Communication (IEEE ICC'25) IEEE, June, 2025.[PDF]

5. W. Xu, H. Mao, H. Shao, W. Liang, J. Peng, W. Huang, Z. Xu, P. Zhou and J. X. Yu.
   An Adaptive Sampling Algorithm for the Top-K Group Betweenness Centrality.
   Proc of 41st IEEE International Conference on Data Engineering (ICDE'25), IEEE, May, 2025.[PDF]

6. J. Li, J. Wang, W. Liang, J. Wu, Q. Chen, and Z. Xu.
   Social-aware DT-assisted service provisioning in serverless edge computing.
   Proc of 20th International Conference on Mobility, Sensing and Networking (MSN'24), IEEE, Dec., 2024.[PDF], [Best Paper Award]

7. W. Xu, H. Xue, J. Li, W. Liang, Z. Xu, P. Zhou, X. Jia and S. Das.
   Approximation algorithm for connected submodular function maximization problems.
   Proc of ICDCS'24, IEEE, July, 2024.[PDF]

8. J. Li, W. Liang, J. Wang, and X. Jia.
   Accumulative fidelity maximization of inference services in DT-assisted edge computing.
   Proc of 1st IEEE Intl Conf on Meta Computing (ICMC), IEEE, June, 2024.[PDF]

9. Y. Zhang and W. Liang.
   Cost-aware digital twin migration in mobile edge computing via deep reinforcement learning.
   Proc of IFIP Networking'24, IEEE, June, 2024.[PDF]

10. J. Li, S. Guo, W. Liang, J. Wu, Q. Chen, Z. Xu, W. Xu, and J. Wang.
    Wait for fresh data? digital twin empowered IoT services in edge computing.
    Proc of IEEE 20th Intl' Conference on Mobile Ad Hoc and Smart Systems (MASS), IEEE, 2023. [PDF]

11. S. Li, C. Xiang, W. Xu, J. Peng, Z. Xu, J. Li. W. Liang, and J. Jia.
    Coverage maximization of heterogeneous UAV networks.
    Proc of ICDCS'23, IEEE, 2023.[PDF]

12. J. Li, S. Guo, W. Liang, Q. Chen, Z. Xu, and W. Xu.
    SFC-enabled reliable service provisioning in mobile edge computing.
    Proc of IEEE 19th Intl' Conference on Mobile Ad Hoc and Smart Systems (MASS), IEEE, 2022. [PDF]

13. Y. Li, W. Liang, J. Li, X. Cheng, D. Yu, A. Zomaya, and S. Guo.
    Energy-constrained D2D assisted federated learning in edge computing.
    Proc of The 25th International Conference on Modeling, Analysis and Simulation of Wireless and Mobile System, (MSWiM'22) ACM, pp.33 --37, 2022. [PDF]

14. S. Chen, D. Yu, F. Li, Z. Zou, W. Liang, and X. Cheng.
    PPAR: a privacy-preserving adaptive ranking algorithm for multi-armed-bandit crowdsourcing.
    Proc of IWQoS'22, IEEE, 2022. [PDF]

15. Z. Xu, W. Ren, W. Liang, W. Xu, Q. Xia, P. Zhou, and M. Li.
    Schedule or wait: age-minimization for IoT big data processing in MEC via online learning.
    Proc of INFOCOM'22, IEEE, 2022. [PDF]

16. W. Xu, D. Peng, W. Liang, X. Jia, Z. Xu, P. Zhou, G. Wu, and X. Chen.
    Maximizing h-hop independently submodular functions under connectivity constraint.
    Proc of INFOCOM'22, IEEE, 2022. [PDF]

17. Q. He, Z. Dong, F. Chen, S. Deng, W. Liang, and Y. Yang.
    Pyramid: enabling hierarchical machine learning with edge computing.
    Proc of WWW'22, ACM, pp. 1860 --1870, 2022. [PDF]

18. Y. Li, W. Liang, and J. Li.
    Profit maximization for service placement and request assignment in edge computing via deep reinforcement learning.
    Proc of The 24th International Conference on Modeling, Analysis and Simulation of Wireless and Mobile System, (MSWiM'21) ACM, Nov., 2021. [PDF]

19. J. Li, W. Liang, Y. Li, Z. Xu, and X. Jia.
    Delay-aware DNN inference throughput maximization in edge computing via jointly exploring partitioning and parallelism.
    Proc of IEEE 46th Conference on Local Computer Networks (LCN), IEEE, 2021. [PDF]

20. Z. Xu, D. Liu, W. Liang, W. Xu, H. Dai, Q. Xia, and P. Zhou.
    Online learning algorithms for offloading augmented reality requests with uncertain demands in MEC.
    Proc of ICDCS'21, IEEE, 2021.[PDF]

21. M. Chen, W. Liang, and S. Das.
    Data collection utility maximization in wireless sensor networks via efficient determination of UAV hovering locations.
    Proc of 19th International Conference on Pervasive Computing and Communications (PerCom'21), Kassel, Germany, IEEE, 2021. [PDF]

22. M. Chen, W. Liang, and J. Li.
    Energy-efficient data collection maximization for UAV-assisted wireless sensor networks.
    Proc of IEEE Wireless Communications and Networking Conference (WCNC'21), Nanjing, China, IEEE, 2021. [PDF]

23. J. Li, W. Liang, M. Chen, and Z. Xu.
    Mobility-aware dynamic service placement in D2D-assisted MEC environments.
    Proc of IEEE Wireless Communications and Networking Conference (WCNC'21), Nanjing, China, IEEE, 2021. [PDF]

24. Z. Xu, H. Ren, W. Liang, Q. Xia, W. Zhou, G. Wu, and P. Zhou.
    Near optimal and dynamic mechanisms towards a stable NFV market in multi-tier cloud networks.
    Proc of INFOCOM'21, IEEE, 2021. [PDF]

25. J. Zhang, Z. Li, W. Xu, J. Peng, W. Liang, Z. Xu, X. Ren, and X. Jia.
    Minimizing the number of deployed UAVs for delay-bounded data collection of IoT devices.
    Proc of INFOCOM'21, IEEE, 2021. [PDF]

26. Z. Xu, Y. Qin, P. Zhou, J. C. S. Lui, W. Liang, Q. Xia, W. Xu, and G. Wu.
    To cache or not to cache: stable service caching in mobile edge-clouds of a service market.
    Proc of ICDCS'20, IEEE, pp. 421-431, 2020. [PDF]

27. Z. Xu, S. Wang, S. Liu, H. Dai, Q. Xia, W. Liang, and G. Wu.
    Learning for exception: dynamic service caching in 5G-enabled MECs with bursty user demands.
    Proc of ICDCS'20, IEEE, pp.1079-1089, 2020. [PDF]

28. J. Li, W. Liang, Z. Xu, and W. Zhou.
    Provisioning virtual services in mobile edge computing for IoT applications with multiple sources.
    Proc of IEEE 45th Conference on Local Computer Networks (LCN) IEEE, Nov.16 -- Nov. 19, Sydney, 2020. [PDF]

29. J. Li, W. Liang, W. Xu, Z. Xu, and J. Zhao.
    Maximizing the quality of user experience of using services in edge computing for delay-sensitive IoT applications.
    Proc of The 23rd International Conference on Modeling, Analysis and Simulation of Wireless and Mobile System, (MSWiM'20) ACM, Nov.16 -- 20, Alicante, Spain, 2020. [PDF]

30. W. Liang, Y. Ma, W. Xu, X. Jia, and S. Chau.
    Reliability augmentation of requests with service function chain requirements in mobile edge-cloud networks
    Proc of 49th Intl Conf on Parallel Processing (ICPP'20), ACM, Alberta, Canada, 2020. [PDF]

31. M. Chen, W. Liang, and Y. Li.
    Data collection maximization for UAV-enabled wireless sensor networks.
    Proc of 29th ICCCN'20, IEEE, 2020. [PDF] [The Best Paper Award]

32. S. Lin, W. Liang, and J. Li.
    Reliability-aware service function chain provisioning in mobile edge-cloud networks.
    Proc of 29th ICCCN'20, IEEE, 2020. [PDF]

33. Q. Xia, L. Bai, Z. Xu, W. Liang, O. Rana, and G. Wu.
    Learning based online query evaluation for big data analytics in mobile edge clouds.
    Proc of ICC'20, IEEE, 2020. [PDF]

34. W. Xu, Z. Xu, J. Peng, W. Liang, T. Liu, X. Jia, and S. Das.
    Approximation algorithms for the team orienteering problem.
    Proc of INFOCOM'20, Toronto, IEEE, 2020. [PDF]

35. Z. Xu, L. Zhou, S. Chau, W. Liang, Q. Xia, and P. Zhou.
    Collaborate or separate? distributed service caching in mobile edge clouds.
    Proc of INFOCOM'20, Toronto, IEEE, 2020. [PDF]

36. Y. Li, W. Liang, W. Xu, and X. Jia.
    Data collection of IoT devices using an energy-constrained UAV.
    Proc of 34th IPDPS'20 , New Orleans, pp644--653, IEEE, 2020. [PDF]

37. Z. Xu, Y. Zhang, W. Liang, Q. Xia, O. Rana, A. Galis, G. Wu, and P. Zhou.
    NFV-enabled multicasting in mobile edge clouds with resource sharing.
    Proc of 48th Intl Conf on Parallel Processing (ICPP'19) , August, 104:1-104:10, ACM, 2019. [PDF]

38. Q. Xia, L. Bai, W. Liang, Z. Xu, L. Yao, and L. Wang.
    QoS-aware proactive data replication for big data analytics in edge clouds.
    The Workshop Proceedings of 48th Int'l Conf on Parallel Processing (ICPP'19) , August, 26:1-26:10, ACM, 2019. [PDF]

39. W. Xu, W. Liang, H. Kan, Y. Xu, and X. Zhang.
    Minimizing the longest charge delay of multiple mobile chargers for wireless rechargeable sensor networks by charging multiple sensors simultaneously.
    Proc of 39th IEEE Intl Conf on Distributed Computing Systems (ICDCS'19) , July, 2019. [PDF]

40. J. Li, W. Liang, M. Huang, and X. Jia.
    Providing reliability-aware virtualized network function services for mobile edge computing.
    Proc of 39th IEEE Intl Conf on Distributed Computing Systems (ICDCS'19) , July, 2019. [PDF]

41. Y. Ma, W. Liang, and J. Wu.
    Online NFV-enabled multicasting in mobile edge cloud networks.
    Proc of 39th IEEE Intl Conf on Distributed Computing Systems (ICDCS'19) , July, 2019. [PDF]

42. Y. Ma, W. Liang, M. Huang, Y. Liu, and S. Guo.
    Virtual network function provisioning for offloading tasks in MEC by trading off computing and communication resource usages.
    Proc of IEEE INFOCOM WKSHP IECCO, 2019. [PDF]

43. Y. Ma, W. Liang, and S. Guo.
    Mobility-aware delay-sensitive service provisioning for mobile edge computing.
    Proc of IEEE INFOCOM WKSHP IOT4Health, 2019. [PDF]

44. Y. Ma, W. Liang, M. Huang, and S. Guo.
    Profit maximization of NFV-enabled request admissions in SDNs.
    Proc of IEEE Globecom'18, Dec, 2018. [PDF]

45. M. Jia and W. Liang.
    Delay-sensitive multiplayer augmented reality game planning in mobile edge computing.
    Proc of 21st ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), ACM, 2018. [PDF] pp. 147--154, ACM, 2018.

46. M. Huang, W. Liang, Y. Ma, and S. Guo.
    Throughput maximization of delay-sensitive request admission via virtualized network function placements and migrations.
    Proc of IEEE ICC'18, May, 2018. [PDF]

47. Y. Ma, W. Liang, and Z. Xu.
    Online revenue maximization in NFV-enabled SDNs.
    Proc of IEEE ICC'18, May, 2018. [PDF]

48. H. Huang, S. Guo, W. Liang, and K. Wang.
    Online green data gathering from Geo-distributed IoT networks via LEO satellites.
    Proc of IEEE ICC'18, May, 2018. [PDF]

49. B. Yang, Z. Xu, W-K Chai, W. Liang, D. Tuncer, A. Galis, and G. Pavlou.
    Algorithms for fault-tolerant placement of stateful virtualized network functions.
    Proc of IEEE ICC'18, May, 2018. [PDF]

50. M. Rezvani, Q. Wang, and W. Liang.
    FACH: fast algorithm for detecting cohesive hierarchies of communities in large networks.
    Proc of 11th ACM International Conference on Web Search and Data Mining (WSDM'18) , ACM, Feb., 2018. [PDF]

51. M. Jia, W. Liang, M. Huang, Z. Xu, and Y. Ma.
    Throughput maximization of NFV-enabled unicasting in Software-Defined Networks.
    Proc of IEEE Globecom'17, Dec, 2017. [PDF] and [Slides]

52. M. Jia, W. Liang, and Z. Xu.
    QoS-aware task offloading in distributed cloudlets with virtual network function services.
    Proc of 20th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), ACM, pp.109--116, 2017. [PDF] and [Slides]

53. M. Huang and W. Liang
    Incremental SDN-enabled switch deployment for hybrid Software-Defined Networks.
    Proc of IEEE 26th ICCCN'17, July, 2017. [PDF]

54. Z. Xu, W. Liang, M. Huang, M. Jia, S. Guo, and A. Galis.
    Approximation and online algorithms for NFV-enabled multicasting in SDNs.
    Proc of 37th IEEE Intl Conf on Distributed Computing Systems (ICDCS'17), , pp.625--643, June, 2017. [PDF] and [Slides]

55. Z. Xu, W. Liang, A. Galis, and Y. Ma.
    Throughput maximization and resource optimization in NFV-enabled networks.
    Proc of IEEE ICC'17, May, 2017. [PDF]

56. Q. Xia, W. Liang, and Z. Xu.
    QoS-aware data replications and palcements for query evaluation of big data analytics.
    Proc of IEEE ICC'17, May, 2017. [PDF]

57. Y. Fan, Y. Xia, W. Liang, and X. Zhang
    Latency-aware reliable controller placement in SDNs.
    Proc of CHINACOM'2016, Springer, 2016. [PDF]

58. M. Huang, W. Liang, Z. Xu, M. Jia, and S. Guo.
    Throughput maximization in software-defined networks with consolidated middleboxes.
    Proc of 41st Annual IEEE Conference on Local Computer Networks (LCN), IEEE, Nov., 2016. [PDF]

59. W. Xu, W. Liang, X. Jia, and Z. Xu.
    Maximizing sensor lifetime in a rechargeable sensor network via partial energy charging on sensors.
    Proc of 13th Annual Conf on Sensing, Communication and Networking (SECON'16) , IEEE, 2016. [PDF], [Video], [slides]

60. M. Huang, W. Liang, Z. Xu, W. Xu, S. Guo and Y. Xu.
    Dynamic routing for network throughput maximization in Software-Defined Networks.
    Proc of INFOCOM'16 IEEE, pp.2545--2553, 2016. [PDF]

61. M. Jia, W. Liang, Z. Xu and M. Huang.
    Cloudlet load balancing in wireless metropolitan area networks.
    Proc of INFOCOM'16, IEEE, pp.730--738, 2016. [PDF]

62. W. Xu, W. Liang, S. Hu, X. Lin and J. Peng.
    Charging your smartphones on public commuters via wireless energy transfer.
    Proc of 34th IEEE International Performance Computing and Communications Conference (IPCCC'15), IEEE, Dec., 2015. [PDF]

63. Z. Xu, W. Liang, and Q. Xia.
    Electricity cost minimization in distributed clouds by exploring heterogeneities of cloud resources and user demands.
    Proc of 21st IEEE International Conference on Parallel and Distributed Systems (ICPADS), IEEE, Dec., 2015. [PDF]

64. Z. Xu, W. Liang, W. Xu, M. Jia, and S. Guo.
    Capacitated cloudlet placements in wireless metropolitan area networks.
    Proc of 40th Annual IEEE Conference on Local Computer Networks (LCN), IEEE, Oct., 2015. [PDF]

65. M. Rezvani, W. Liang, W. Xu, and C. Liu.
    Indentifying Top-k structural hole spanners in large-scale social networks.
    Proc of 24th ACM Intl Conf on Information and Knowledge Management (CIKM 2015), Oct., Melbourne, 2015. [PDF]

66. Q. Xia, W. Liang, Z. Xu, and B. Zhou.
    Online algorithms for location-aware task offloading in two-tiered mobile cloud environments.
    Proc of 7th IEEE/ACM Intl Conf on Utility and Cloud Computing Dec., 2014. [PDF]

67. Q. Xia, W. Liang, and Z. Xu.
    Data locality-aware query evaluation for big data analytics in distributed clouds.
    Proc of 2nd Intl Conf Advanced Cloud and Big Data, Nov., 2014. [PDF]

68. Z. Xu, W. Liang, and Q. Xia.
    Efficient virtual network embedding via exploring periodic resource demands.
    Proc of 39th Annual IEEE Conference on Local Computer Networks (LCN), IEEE, Sep., 2014. [PDF]

69. W. Liang, W. Xu, R. Ren, X. Jia, and X. Lin.
    Maintaining sensor networks perpetually via wireless recharging mobile vehicles.
    Proc of 39th Annual IEEE Conference on Local Computer Networks (LCN), IEEE, Sept., 2014. [PDF]

70. W. Xu, W. Liang, X. Lin, G Mao, and X. Ren.
    Towards perpetual sensor networks via deploying multiple mobile wireless chargers.
    Proc of 43rd International Conference on Parallel Processing (ICPP), IEEE, Sep., 2014. [PDF]

71. W. Xu, W. Liang, X. Ren, and X. Lin.
    On-demand energy replenishment for sensor networks via wireless energy transfer.
    Proc of 25th Annual International Sympo on Personal, Indoor, and Mobile Radio Communications (PIMRC), IEEE, Sep., 2014. [PDF]

72. X. Ren and W. Liang.
    Exploiting mobility for quality-maximized data collection in energy harvesting sensor networks.
    Proc of 25th Annual International Sympo on Personal, Indoor, and Mobile Radio Communications (PIMRC), IEEE, Sep., 2014. [PDF]

73. X. Ren, W. Liang, and W. Xu.
    Maximizing charging throughput in rechargeable sensor networks.
    Proc of 23rd International Conference on Computer Communications and Networks (ICCCN), IEEE, Aug., 2014. [PDF]

74. Q. Xia, W. Liang, and W. Xu.
    Throughput maximization for online request admissions in mobile cloudlets.
    Proc of 38th Annual IEEE Conference on Local Computer Networks (LCN), IEEE, Oct, 2013. [PDF]

75. X. Ren, W. Liang, and W. Xu.
    Use of a mobile sink for maximizing data collection in energy harvesting sensor networks.
    Proc of 42nd International Conference on Parallel Processing (ICPP), IEEE, Sep, 2013. [PDF]

76. X. Xu, W. Liang, X. Jia, and W. Xu.
    Maximizing network throughput with minimal remote data transfer cost in unreliable wireless sensor networks.
    Proc of 14th ACM Intl Symp on Mobile Ad hoc Networking and Computing (Mobihoc), ACM, July, pp245--248, 2013. [PDF]

77. Z. Xu and W. Liang.
    Minimizing the operational cost of data centers via geographical electricity price diversity
    Proc of 6th IEEE International Conference on Cloud Computing, IEEE, June, 2013. [PDF]

78. L. Chang, J. Yu, L. Qin, X. Lin, C. Liu, and W. Liang.
    Efficiently computing k-edge connected components via graph decomposition
    Proc. of SIGMOD, ACM, June, 2013. [PDF]

79. X. Xu, W. Liang, and Z. Xu.
    Minimizing remote monitoring cost of wireless sensor networks
    Proc of Wireless Communications and Networking Conference (WCNC'13), IEEE, April, pp1476--1481, 2013. [PDF]

80. X. Ren and W. Liang
    The use of a mobile sink for quality data collection in energy harvesting sensor networks.
    Proc of Wireless Communications and Networking Conference (WCNC'13), IEEE, April, pp. 1145--1150, 2013. [PDF]

81. X. Xu, W. Liang, T. Wark, and J. Jeong.
    Maximizing network lifetime via 3G gateway assignment in dual-radio sensor networks
    Proc of 37th Annual IEEE Conference on Local Computer Networks (LCN), IEEE, Oct., 2012. [PDF]

82. Z. Xu and W. Liang.
    Collusion-resistant repeated double auctions for cooperative communications
    Proc of 9th Annual International Conference on Mobile Ad-hoc and Sensor Systems (MASS),
    IEEE, October 8-11, Las Vegas, 2012. [PDF]

83. X. Ren and W. Liang.
    Delay-tolerant data gathering in energy harvesting sensor networks with a mobile sink.
    Proc. of Globecom 2012, IEEE, Dec, 2012. [PDF]

84. Z. Xu, W. Liang, and Y. Xu.
    Network lifetime maximization in delay-tolerant sensor networks with a mobile sink
    Proc. of 8th Intl Conf. on Distributed Computing in Sensor Systems (DCOSS) , IEEE, May, pp9--16, 2012. [PDF]

85. R. Zhou, C. Liu, J. Yu, W. Liang, B. Chen and J. Li.
    Finding maximal k-edge-connected subgraphs from a large graph
    Proc. of EDBT , ACM, March, 2012. [PDF]

86. W. Liang.
    Constrained resource optimization in wireless sensor networks with a mobile sink
    International Conf. on Computing, Networking and Communications (ICNC'12), (Invited paper), IEEE, Hawaii, January, 2012. [PDF]

87. W. Liang and J. Luo.
    Network lifetime maximization in sensor networks with multiple mobile sinks
    36th Annual IEEE Conference on Local Computer Networks (LCN), IEEE, Oct., 2011. [PDF]

88. X. Xu and W. Liang.
    Monitoring quality optimization in wireless sensor networks with a mobile sink.
    14th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), ACM, Oct, pp. 77-84, 2011. [PDF]

89. B. Chen, W. Liang and G. Min.
    Top-k query evaluation in sensor networks with the guaranteed accuracy of query results.
    Proc. of 22nd International Conference on Database and Expert Systems Applications (DEXA) ,
    Lecutre Notes in Computer Science, Sept, 2011. [PDF]

90. W. Yang, D. Ban, W. Liang, and W Dou.
    A genetic algorithm for joint resource allocation in cooperative congitive radio networks.
    Proc. 7th Intl Wireless Comm. and Mobile Computing Conf (IWCMC), IEEE, pp. 167--172, 2011. [PDF]

91. X. Xu, W. Liang and T. Wark.
    Data quality maximisation in sensor networks with a mobile sink.
    Proc. of 7th Intl Conf. on Distributed Computing in Sensor Systems (DCOSS) , IEEE, June, 2011. [PDF]

92. X. Xu and W. Liang.
    Placing optimal number of sinks in sensor networks for network lifetime maximization.
    Proc. of ICC'11 , IEEE, June, 2011. [PDF]

93. W. Xu, R. Zhang, and W. Liang.
    Overhead analysis of query localization optimization and routing.
    Proc. of 5th International Conference on Ubiquitous Information Management and Communication (ICUIMC'11), ACM, Feb., Seoul, 2011. [PDF]

94. W. Liang, J. Luo, and X. Xu
    Prolonging network lifetime via a controlled mobile sink in wireless sensor networks.
    Proc. of Globecom 2010, IEEE, Dec, 2010. [PDF]

95. G. A. Shah, W. Liang, and X. Shen
    Cross-layer design to support QoS in wireless multimedia sensor networks.
    Proc. of Globecom 2010, IEEE, Dec, 2010. [PDF]

96. W. Yang, W. Liang, and W. Duo
    Energy-aware real time opportunistic routing for wireless ad hoc networks.
    Proc. of Globecom 2010, IEEE, Dec, 2010. [PDF]

97. B. Chen, W. Liang, R. Zhou, and J. X. Yu
    Energy-efficient top-k query processing in wireless sensor networks.
    Proc of 19th ACM Intl Conf on Information and Knowledge Management (CIKM 2010), ACM, pp.329--338, Oct., 2010. [PDF]

98. W. Yang, W. Liang, J. Luo, and W. Duo
    Online energy-aware routing with QoS constraints in multi-rate wirelss ad hoc networks.
    Proc. 6th Intl Wireless Comm. and Mobile Computing Conf (IWCMC), ACM Press, Caen, France, June 28--July 2, pp. 721--725, 2010. [PDF]

99. B. Chen, W. Liang, and J. X. Yu.
    Online time interval top-k queries in sensor networks.
    Proc. 11th International Conference on Mobile Data Management (MDM 2010), Kansas City, IEEE Computer Society, May, pp.177-182, 2010. [PDF]

100. O. Jerew and W. Liang
     Prolonging network lifetime through the use of mobile base station in wireless sensor networks.
     Proc. 7th Intl Conf. on Advances of Mobile Computing and Multimedia (MoMM), ACM Press, Dec.,pp. 170--178, 2009. ( the best paper award)[PDF]

101. B. Chen, W. Liang, and J. X. Yu.
     Progressive skyline query evaluation and maintenance in sensor networks.
     Proc. 18th Conference on Information and Knowledge Management, Hong Kong, ACM Press, short paper, pp.1445--1448, 2009. [PDF]

102. B. Chen and W. Liang
     Progressive skyline query processing in wireless sensor networks.
     Proc. 5th Int'l Conf. on Mobile Ad Hoc and Sensor Networks, IEEE Computer Society, pp. 17--24, 2009. [PDF]

103. W. Liang, G. Ma. Y. Xu, and J. Shi.
     Aggregate node placements in sensor networks.
     Proc. 11th IEEE Intl Conference on Communications Systems, IEEE Communication Society, pp926--932,2008. [PDF]

104. W. Liang, B. Chen, and J. X. Yu.
     Response time constrained top-k query evaluation in sensor networks.
     Proc. 14th IEEE Conference on Parallel and Distributed Systems, IEEE Computer Society, 2008. [PDF]

105. W. Liang, B. Chen, and J. X. Yu.
     Energy-efficient skyline query processing and maintenance in sensor networks.
     Proc. 17th Conference on Information and Knowledge Management, ACM Press, poster paper, pp1471--1472, 2008. [PDF]

106. Y. Liu and W. Liang.
     Prolonging network lifetime for target coverage in sensor networks.
     Proc. of 5th International Conference on Wireless Algorithms, Systems and Applications , Vol.5258, Lecture Notes in Computer Science,pp.212--223, 2008 [PDF]

107. Y. Liu and W. Liang.
     Approximate querying in wireless sensor networks.
     Proc. 3rd Intl Conf. on Pervasive Computing and Applications ,IEEE Computer Society, pp. 140--145,2008. [PDF]

108. X. Zhang, W. Liang and G. Chen.
     Computing maximum flows in undirected planar networks with both edge and vertex capacities.
     Proc. of 14th Annual International Computing and Combinatorics Conference (COCOON), Lecture Notes in Computer Science, Vol. 5092, pp. 577--582, 2008. [PDF]

109. Y. Liu and W. Liang.
     Energy-efficient multiple routing trees for aggregate query evaluation in sensor networks.
     Proc. of 6th International Conference on Wired/Wireless Internet Communications, Lecture Notes in Computer Science, Vol. 5031, pp. 201--212,2008. [PDF]

110. W. Liang and Y. Liu.
     Online broadcasting and multicasting in WDM networks with shared light splitter bank.
     in Proc. of 4th Intl Conf on Broadband Communications, Networks, and Systems, IEEE Communication Society, Taleigh, North Carolina, USA, Sep. 10-14, 2007.[PDF]

111. Y. Liu and W. Liang.
     Online multicasting in WDM networks with shared light splitter bank.
     Proc. of IFIP Networking, Lecture Notes in Computer Science, Vol 4479, pp. 958--970, 2007. [PDF]

112. A. Vishwanath and W. Liang.
     Delay constrained traffic grooming in WDM ring networks. Proc. of 31st Annu. IEEE Conf. on Local Computer Networks , IEEE Computer Society, pp. 443--450, 2006.[PDF]

113. Z. Tu and W. Liang.
     Energy-efficient aggregate query evalution in sensor networks.
     Proc of Int'l Conf. on Mobile Ad Hoc and Sensor Networks , Lecture Notes in Computer Science, Vol. 3794, pp.31--41, 2005. [PDF]

114. A. Vishwanath and W. Liang.
     On-line routing in WDM-TDM switched optical mesh networks.
     The 6th Int'l Conf. on Parallel and Distributed Computing, Applications and Technologies , IEEE Computer Society, Dalian, China, 5-8 Dec. 2005.[PDF]

115. Y. Liu and W. Liang.
     Approximate coverage in sensor networks. Proc. of 30th Annu. IEEE Conf. on Local Computer Networks , IEEE Computer Society, pp. 68-75, Sydney, November, 15-17, 2005.[PDF]

116. A. Vishwanath and W. Liang.
     On-line multicast routing in WDM grooming networks. Proc. of 14th Int'l Conf. on Computer Communication and Networks, San Diego, CA, October 17-19, IEEE Computer Society, pp.255--260,2005.[PDF]

117. W. Liang.
     Minimizing energy and maximizing network lifetime multicasting in wireless ad hoc networks. Proc. of 40th Int'l Conf. on Communications (ICC'05, Wireless Networking) , IEEE Communication Society, Seoul, May, vol.5, pp.3375--3379, 2005.[PDF][slides].

118. Y. Wan and W. Liang.
     Wavelength rerouting in survivable WDM networks. Proc. of IFIP Networking , Lecture Notes in Computer Science, Vol 3462, pp. 431 -- 442, Waterloo, Ontario, Canada, May 2-6, 2005. [PDF].

119. W. Liang, Y. Liu and X. Guo.
     On-line disjoint path routing for network capacity maximization in ad hoc networks.
     Proc. of IEEE Wireless Communications and Networking Conf. , IEEE Communication Society, New Orleans, March, Vol. 4, pp. 2026--2031, 2005. [PDF].

120. Y. Wan and W. Liang.
     Wavelength rerouting for on-line multicast in WDM networks. Proc. of 29th Annu. IEEE Conf. on Local Computer Networks, IEEE Computer Society, pp. 352--359,Tampa, FL, November 2004.[PDF].

121. A. Vishwanath and W. Liang.
     Multiple end-to-end delay constrained multicasting in multi-hop optical WDM networks. Proc. of 9th Intl' Conf. on Communication Systems , IEEE Computer Society, Sigopare, Sept., 2004.[PDF].

122. W. Liang.
     Constructing multiple light multicast trees in WDM optical networks.
     Proc. of 7th Int'l Symp. on Parallel Architectures, Algorithms, and Networks , IEEE Computer Society, Hong Kong, May 10-12, 2004.[PDF].

123. H.C. Liu and W. Liang.
     Safe web queries. Proc of Asian-Pacific Web Conf. in 2004 , Lecture Notes in Computer Science, April, 2004.[PDF].

124. W. Liang and Y. Yang.
     Maximizing battery life routing in wireless ad hoc networks. Proc of 37th Hawaii Int'l Conf on System Sciences , IEEE Computer Society, January, 2004, [PDF].

125. W. Liang and J. X. Yu.
     Parallel maintenance of materialized views on personal computer clusters.
     Proc. 13th Int'l Conf. on Parallel and Distributed Computing and Systems, IASTED/ACTA Press, 2002, [PDF].

126. W. Liang and X. Shen
     Finding multiple routing paths in wide-area WDM networks.
     Workshop on Optical Networks, in conjunction with ICPP 2002 , Vancouver, Canada, August, IEEE Computer Society, pp. 199--206, 2002, [PS] .

127. W. Liang
     Constructing minimum-energy broadcast trees in wireless ad hoc networks.
     Proc. of 3rd ACM International Symposium on Mobile Ad Hoc Networking and Computing, ACM Press, Lausanne, Switzerland, June, pp. 112-122,2002, [PDF]

128. W. Liang and J. X. Yu.
     Revisit on view maintenance in data warehouses.
     Proc of 2nd Int'l Conf. on Web-Age Information Management, Xi'an, July, Lecture Notes in Computer Science, Vol. 2118, Springer, pp.203--211, 2001, [PDF].

129. W. Liang.
     Robust routing in wide-area WDM networks.
     Proc. of 15th Int'l Parallel and Distributed Processing Symp., San Francisco, April, IEEE Computer Society, 2001, [PDF].

130. W. Liang, C. Johnson and J. X. Yu.
     Maintaining materialised views for data warehouses with the multiple remote source environments.
     Proc of 1st Int'l Conf. on Web-Age Information Management
     Shanghai, Lecture Notes in Computer Science, Vol. 1846, Springer, pp.299--310, 2000, [PDF].

131. W. Liang and M. Orlowska.
     Optimizing processing of query subscription in an WDM network environment.
     Proc of Int'l Symp. on Information Technology: Coding and Computing, IEEE Computer Society Press, pp.510--515, 2000,[PS].

132. H. Wang, M. Orlowska and W. Liang.
     Efficient refreshment of materialised views with multiple sources.
     Proc of 8th Annual Conf. on Information and Knowledge Managements , Nov., USA, ACM Press, pp.375--382, 1999, [PDF].

133. W. Liang and B. McKay.
     An NC approximation algorithm for optimal k-edge connectivity augmentation.
     Proc. of Int'l Symp.. on Parallel Architectures, Algorithms, and Networks,
     Perth, June, IEEE Computer Society Press, pp.290--295, 1999, [PDF].

134. W. Liang and X. Shen.
     Permutation routing in all-optical product networks.
     Proc. of 3rd Workshop on Optics and Computer Science,
     San Juan, Puerto Rico, April, Lecture Notes in Computer Science, Vol. 1586, Springer, pp. 831--844, 1999, [PS].

135. W. Liang and M. Orlowska.
     Computing multidimensional aggregate in parallel.
     Proc. of Int'l Conf. on Parallel and Distributed Systems, Taiwan, Dec. 14-16, IEEE Computer Society Press, 1998,[PS].

136. W. Liang, M. Orlowska, and H. Shen.
     Simultaneous optimization and evaluation of multiple dimensional aggregate queries on shared-nothing multiprocessors.
     Proc. of 2nd ISATED Int'l Conf. of Parallel and Distributed Computing and Networks,
     Brisbane, Dec., pp.48-53, ACTA Press, 1998, [PS].

137. W. Liang, Q. Hu and X. Shen.
     Finding the most vital edge for some optimisation problems on meshes and hypercubes.
     Proc. 10th Int'l Conf. on Parallel and Distributed Computing and Systems, IASTED, Los Vegas, Oct., pp. 14--19, IASTED/ACTA Press, 1998, .

138. Y. Han, W. Liang, and X. Shen.
     Very fast parallel algorithms for approximate edge colouring.
     Proc. 10th Int'l Conf. on Parallel and Distributed Computing and Systems, IASTED, Los Vegas, Oct., pp. 244--249, IASTED/ACTA Press, 1998.

139. H. Shen and W. Liang.
     Efficient multiple multicast in WDM networks.
     Proc. of 1998 Int'l Conf. on Parallel and Distributed Techniques and Applications,
     Los Vegas, CSREA Press, July, Vol.2, pp.1028--1033, ISBN: 1-892-512-05-x, 1998.

140. W. Liang, G. Havas and X. Shen.
     Improved lightpath routing in large WDM networks.
     Proc. of 18th Int'l Conf. on Distributed Computing Systems,
     Amsterdam, The Netherlands, IEEE Computer Society Press, May 26--29, pp.516--523, 1998.

141. W. Liang and H. Shen.
     Multicast broadcasting in large WDM networks.
     Proc. 12th International Parallel Processing Symposium,
     Orlando, Florida, USA, IEEE Computer Society Press, pp.365--369, March 30-April 3, 1998.

142. W. Liang and G. Havas.
     Finding the k most vital edges with respect to minimum spanning trees with k=2,3.
     Proc. of CATS'98, Computing Theory, Ed. X. Lin, Perth, Feb., pp. 37--50, Springer, 1998.

143. W. Liang, G. Havas and A. Street.
     Parallel approximate edge colouring revisited.
     Proc. 4th Australasian Conf. on Parallel and Real-time Systems, Eds. N. Sharda and A. Tam, Springer, Sept., pp.95--103, 1997.

144. W. Liang and G. Havas.
     NC approximation algorithms for the 2-connectivity augmentation in a graph.
     Proc. of Euro-Par'97, Lecture Notes in Computer Science, Vol. 1300, pp. 430--439, Germany, Springer, Aug., 1997

145. W. Liang.
     An NC algorithm for the nearest common dominator problem and related problems in a DAG.
     Australian Computer Science Communications Vol. 20, ({\it Proc. 20th Australasian Computer Science Conference}), pp.79-82, 1997.

146. W. Liang and R. Brent.
     Constructing the spanners of graphs in parallel.
     Proc. the 10th International Parallel Processing Symposium.
     IEEE Computer Society Press, IEEE & ACM SIGARCH, Honolulu, Hawaii, April, pp. 206-210, 1996.

147. B. B. Zhou, R. Brent, X. Qu and W. Liang.
     A novel parallel algorithm for enumerating combinations.
     Proc. of 1996 International Conf. on Parallel Processing, Vol II, pp. 70-73, IEEE Computer Society Press, Aug., 1996.

148. W. Liang and B. McKay.
     A fast parallel algorithm for computing maximal interlocking sets.
     Accepted by IEEE 2nd International Conf. on Algorithms and Architectures for Parallel Processing .
     Singapore, June, 1996.

149. W. Liang and H. Shen.
     Fully dynamic maintaining 2-edge connectivity in parallel.
     Proc. of 7th IEEE Sympo. on Parallel and Distributed Processing.
     IEEE Computer Society Press, Oct., San Antonio, Texas, Oct., 25-28, pp.216-223, 1995.

150. W. Liang and B. McKay.
     Fast parallel algorithms for testing k-connectivity of directed and undirected graphs.
     Proc. of IEEE the first International Conf. on Algorithms and Architectures for Parallel Processing .
     IEEE Press, Brisbane, Australia, April, pp.437-441, 1995.[PDF]

151. W. Liang and X. Shen.
     Fast sequential and parallel algorithms for finding the longest subsequence or the maximum weighted subsequence.
     Proc. of 4th Int'l Conf. for Young Computer Scientists, Peking University Press, Beijing, July, pp.656-661, 1995.

152. W. Liang, X. Shen and Q. Hu.
     Parallel algorithms for verification and sensitivity analysis of minimum spanning trees.
     Proc. of International Conf. on Parallel and Distributed Systems.
     IEEE Computer Society Press, Dec., Taiwan, pp.310-315, 1994.

153. X. Shen, Q. Hu and W. Liang
     Efficient embedding K-ary complete tree into hypercubes.
     Proc. the 8th International Parallel Processing Symposium.
     IEEE Computer Society Press, IEEE & ACM SIGARCH, Mexico, 1994.

154. X. Shen and W. Liang
     A parallel algorithm for multiple edge updates of minimum spanning trees.
     Proc. the 7th International Parallel Processing Symposium .
     IEEE Computer Society Press, IEEE & ACM SIGARCH, CA, April, pp.310-317, 1993.

155. X. Shen, W. Liang and Q. Hu.
     Embedding between 2-D meshes of the same size.
     Proc. the 5th IEEE Sympo. on Parallel and Distributed Processing.
     IEEE Computer Society Press, Dec. 1-4, Dallas, pp.712-719, 1993.

156. W. Liang and X. Shen.
     A distributed algorithm for topological sorting.
     Proc. the 1st Int'l Conf. on Computer Communications and Networks, ISMM, San Diego, CA., June, pp.261-264, 1992.

157. W. Liang and X. Shen.
     Linked list prefix computation on mesh arrays.
     Proc. the 2nd Int'l Computer Sci. Conf., IEEE, Hong Kong, Dec., pp.183-188, 1992.

158. W. Liang and C. Tang.
     Two distributed algorithms for maximum matchings in bipartite graphs.
     Proc. of 2nd Int'l Conf. for Young Computer Scientists, International Academic Publishers, Beijing, July, pp.206-210, 1991.

---

Chinese Journal Publications

You can download the following Chinese papers by clicking this link
1. W. Yang, D-S Ban, W. Liang, and W. Dou.
   Algorithms for joint spectrum allocation and cooperation set partition in cognitive radio networks.
   Chinese Journal of Software, Vol. 23, No. 1, 122--139, 2012. [PDF].

2. G. Chen, W. Liang and H. Shen.
   Research advances in parallel graph algorithms.
   Computer Research and Development, Vol. 32, No. 9, 1-16, 1995.

3. C. Tang and W. Liang.
   A parallel algorithm for computing connected-components of graphs.
   Chinese Journal of Software, Vol. 4, No. 4, 61--68, 1993.

4. W. Liang and C. Tang.
   A parallel algorithm for the minimum spanning tree on mesh arrays.
   Chinese Journal of Computers, Vol. 15, No. 2, Feb., 420--425, 1992.

5. W. Liang and C. Tang.
   A distributed algorithm for topological sorting.
   Computer Research and Development, Vol. 29, No. 9, Sept., 1992.

6. W. Liang and C. Chen.
   Some optimal algorithms for graphs on hypercube multicomputers.
   Chinese Journal of Computers, Vol. 14, No. 9, Sept., pp.641-650, 1991.

7. C. Tang and W. Liang.
   A parallel algorithm for finding K minimum spanning trees.
   University Journal of Science & Technology of China, Vol. 20, No. 4, 464--470, 1991.

8. W. Liang and C. Tang.
   Distributed algorithms for maximum matching in bipartite graphs.
   Computer Engineering and Applications, No.10-11, 48--53, 1990.

9. C. Tang and W. Liang.
   Design parallel algorithms using divide-and-conquer strategy.
   Micoroelectronica and Computer, Vol. 7, 17--20, 1990.

10. C. Tang and W. Liang.
    Some efficient parallel algorithms on interval graphs.
    Applied Mathematics Journal of Chinese Universities, Vol. 4, 534--539, 1989.

______________________ END__________________