Publications

Note

Underlined are my students/RAs.
Email me if you are interested in the preprints that are not available online.

Preprints

1. 2D-Empowered 3D Object Detection on the Edge
   Jingzong Li, Yik Hong Cai, Libin Liu, Yu Mao, Chun Jason Xue, Hong Xu
   arXiv:2302.09221, 2023
   

Conference and workshop proceedings

2023

1. Accelerating Distributed MoE Training and Inference with Lina
   Jiamin Li, Yimin Jiang, Yibo Zhu, Cong Wang, HX
   USENIX ATC
   

2. LRSDP: Low-Rank SDP for Triple Patterning Lithography Layout Decomposition
   Yu Zhang, Yifan Chen, Zhonglin Xie, HX, Zaiwen Wen, Yibo Lin, Bei Yu
   ACM/IEEE DAC
   

3. Lyra: Elastic Scheduling for Deep Learning Clusters
   Jiamin Li, HX, Yibo Zhu, Zherui Liu, Chuanxiong Guo, Cong Wang
   ACM EuroSys
   (arXiv) version
   

4. Cross-Camera Inference on the Constrained Edge
   Jingzong Li, Libin Liu, HX, Shudeng Wu, Chun Jason Xue
   IEEE INFOCOM
   

2022

1. PipeDevice: A Hardware-Software Co-Design Approach to Intra-Host Container Communication
   Qiang Su, Chuanwen Wang, Zhixiong Niu, Ran Shu, Peng Cheng, Yongqiang Xiong, Dongsu Han, Chun Jason Xue, HX
   ACM CoNEXT
   

2. Probabilistic Analysis of Network Availability
   Yunmo Zhang, Hong Xu, Chun Jason Xue, Tei-Wei Kuo
   IEEE ICNP
   

3. Software-defined Network Assimilation: Bridging the Last Mile Towards Centralized Network Configuration Management with NAssim
   Huangxun Chen, Yukai Miao, Li Chen, Haifeng Sun, Hong Xu, Libin Liu, Gong Zhang, Wei Wang
   ACM SIGCOMM
   Best Paper Award
   (Under deployment trial as part of Huawei's iMaster NCE platform for network automation)
   

4. DeepQueueNet: Towards Scalable and Generalized Network Performance Estimation with Packet-level Visibility
   Qing-Qing Yang, Xi Peng, Li Chen, Libin Liu, Jingze Zhang, Hong Xu, Baochun Li, Gong Zhang
   ACM SIGCOMM
   [Code]

5. Load Balancing in PFC-enabled Datacenter Networks
   Jinbin Hu, Chaoliang Zeng, Zilong Wang, Hong Xu, Jiawei Huang, Kai Chen
   APNet
   

6. When Power-of-d-Choices Meets Priority
   Jianyu Niu, Chunpu Wang, Chen Feng, Hong Xu
   IEEE/ACM IWQoS
   

7. APS: Adaptive Packet Sizing for Efficient End-to-End Network Transmission
   Feixue Han, Qing Li, Jianer Zhou, Hong Xu, Yong Jiang
   IEEE/ACM IWQoS
   

8. Alfie: Neural-Reinforced Adaptive Prefetching for Short Videos
   Jingzong Li, Hong Xu, Ming Ma, Haopeng Yan, Chun Jason Xue
   IEEE ICME
   (Alfie is a little alligator from one of my daughter's favorite books.)

2021

1. Two-Dimensional Learning Rate Decay: Towards Accurate Federated Learning with Non-IID Data
   Kaiwei Mo, Chen Chen, Jiamin Li, Hong Xu, Chun Jason Xue
   IEEE IJCNN
   

2. Communication-Efficient Federated Learning with Adaptive Parameter Freezing
   Chen Chen, Hong Xu, Wei Wang, Baochun Li, Bo Li, Li Chen, Gong Zhang
   IEEE ICDCS
   

2020

1. Saec: Similarity-Aware Embedding Compression in Recommendation Systems
   Xiaorui Wu, Hong Xu, Honglin Zhang, Huaming Chen, Jian Wang
   APSys.
   

2. Irina: Accelerating DNN Inference with Efficient Online Scheduling
   Xiaorui Wu, Hong Xu, Yi Wang
   APNet.
   

3. OPS: Optimized Shuffle Management System for Apache Spark
   Yuchen Cheng, Chunghsuan Wu, Yanqiang Liu, Rui Ren, Hong Xu, Bin Yang, Zhengwei Qi
   ICPP.
   

4. NetKernel: Making Network Stack Part of the Virtualized Infrastructure [Project website] [long version]
   Zhixiong Niu, Hong Xu, Peng Cheng, Qiang Su, Yongqiang Xiong, Tao Wang, Dongsu Han, Keith Winstein
   USENIX ATC.
   

5. Joint Switch-Controller Association and Control Devolution for SDN Systems: An Integration of Online Control and Online Learning
   Xi Huang, Yinxu Tang, Ziyu Shao, Yang Yang, Hong Xu
   IEEE/ACM IWQoS.
   

6. Bottleneck-Aware Coflow Scheduling Without Prior Knowledge
   Libin Liu, Hong Xu, Chengxi Gao, Peng Wang
   Workshop on Intelligent Cloud Computing and Networking (ICCN), IEEE INFOCOM.
   

7. Automated Traffic Engineering in SDWAN: Beyond Reinforcement Learning
   Libin Liu, Li Chen, Hong Xu, Hua Shao
   Workshop on Networking Algorithms (WNA), IEEE INFOCOM.
   

8. Simulating Performance of ML Systems with Offline Profiling
   Hongming Huang, Peng Cheng, Hong Xu, Yongqiang Xiong
   Workshop on MLOps Systems, MLSys.
   

9. Scalable Traffic Engineering for Higher Throughput in Heavily-Loaded Software Defined Networks
   Che Zhang, Shiwei Zhang, Yi Wang, Weichao Li, Bo Jin, Ka Pui Mok, Qing Li, Hong Xu
   IEEE NOMS.
   

10. Packet-in Request Redirection for Minimizing Control Plane Response Time
    Rui Xia, Haipeng Dai, Jiaqi Zheng, Hong Xu, Meng Li, Guihai Chen
    IEEE IPDPS.
    

2019

1. Flash: Efficient Dynamic Routing for Offchain Networks (arxiv preprint)
   Peng Wang, Hong Xu, Xin Jin, Tao Wang
   ACM CoNEXT (full paper).
   [Code]: GitHub repo for testbed and simulation, and traces of two real offchain networks
   

2. Tyrus: PHY-Assisted Neural Adaptive Congestion Control for Cellular Networks
   Libin Liu, Hong Xu
   ACM SIGCOMM (poster).
   

3. Predictive Switch-Controller Association and Control Devolution for SDN Systems
   Xi Huang, Simeng Bian, Ziyu Shao, Hong Xu
   IEEE/ACM IWQoS.
   

2018

1. Bohr: Similarity Aware Geo-Distributed Data Analytics
   Hangyu Li, Hong Xu, Sarana Nutanong
   ACM CoNEXT (full paper).
   

2. Elasecutor: Elastic Executor Scheduling in Data Analytics Systems (source code)
   Libin Liu, Hong Xu
   ACM SoCC.
   

3. Hermes: Utility-Aware Network Update in Software-defined WANs
   Jiaqi Zheng, Qifang Ma, Chen Tian, Bo Li, Haipeng Dai, Hong Xu, Guihai Chen
   IEEE ICNP.
   

4. DHL: Enabling Flexible Software Network Functions with FPGA Acceleration (source code)
   Xiaoyao Li, Xiuxiu Wang, Fangming Liu, Hong Xu
   IEEE ICDCS.

5. Adaptive VNF Scaling and Flow Routing with Proactive Demand Prediction
   Xincai Fei, Fangming Liu, Hong Xu, Hai Jin
   IEEE INFOCOM.

2017

1. Unveiling Performance of NFV Software Dataplanes
   Zhixiong Niu, Hong Xu, Libin Liu, Yongqiang Tian, Peng Wang, Zhenhua Li
   CAN Workshop, co-located with ACM CoNEXT.
   

2. Network Stack as a Service in the Cloud (project site) (slides) (talk video)
   Zhixiong Niu, Hong Xu, Dongsu Han, Peng Cheng, Yongqiang Xiong, Guo Chen, Keith Winstein
   ACM HotNets.
   

3. Aemon: Information-Agnostic Mix-Flow Scheduling in Data Center Networks
   Tao Wang, Hong Xu, Fangming Liu
   ACM APNet.
   

4. Bohr: Similarity Aware Geo-Distributed Data Analytics
   Hangyu Li, Hong Xu, Sarana Nutanong
   USENIX HotCloud.
   

5. Towards Load-Balanced VNF Assignment in Geo-Distributed NFV Infrastructure
   Xincai Fei, Fangming Liu, Hong Xu, Hai Jin
   IEEE/ACM IWQoS.
   

6. THOR: A Server-Level Hybrid Switching Data Center Network with Heterogeneous Topologies
   Xiaoshan Yu, Hong Xu, Huaxi Gu
   ACM TURC (Sigcomm China).
   Best Paper Award

7. Multi-Resource Load Balancing for Virtual Network Functions
   Tao Wang, Hong Xu, Fangming Liu
   IEEE ICDCS.
   

8. NetKernel: Network Stack as a Service in the Cloud
   Zhixiong Niu, Hong Xu, Dongsu Han, Peng Wang, Libin Liu
   USENIX NSDI (poster).
   

9. Dynamic Switch-Controller Association and Control Devolution for SDN Systems
   Xi Wang, Simeng Bian, Ziyu Shao, Hong Xu
   IEEE ICC.
   

2016

1. Expeditus: Distributed Congestion-Aware Load Balancing in Clos Data Center Networks
   Peng Wang, Hong Xu, Zhixiong Niu, Dongsu Han, Yongqiang Xiong
   ACM SoCC 2016.
   

2. Kuijia: Traffic Rescaling in Data Center WANs
   Che Zhang, Hong Xu, Libin Liu, Zhixiong Niu, Peng Wang, Yongqiang Tian, Chengchen Hu
   IEEE Sarnoff 2016.
   

3. We've Got You Covered: Failure Recovery with Backup Tunnels in Traffic Engineering
   Jiaqi Zheng, Hong Xu, Xiaojun Zhu, Guihai Chen, Yanhui Geng
   IEEE ICNP 2016.
   

4. U-HAUL: Efficient State Migration in NFV
   Libin Liu, Hong Xu, Zhixiong Niu, Peng Wang, Dongsu Han
   ACM APSys 2016.
   

5. More is Better? Measurement of MPTCP based Cellular Bandwidth Aggregation in the Wild
   Zhixiong Niu, Zhi Wang, Hong Xu, Chuan Wu, Francis C.M. Lau
   IEEE MASS 2016.
   

6. Performance Impact Inference with Failures in Data Center Networks
   Che Zhang, Hong Xu, Chengchen Hu
   IEEE/CIC ICCC 2016.
   

7. Demystifying the Energy Efficiency of Network Function Virtualization
   Zhifeng Xu, Fangming Liu, Tao Wang, Hong Xu
   IEEE/ACM IWQoS 2016.
   Best Paper Candidate

8. Dynamic SDN Controller Assignment in Data Center Networks: Stable Matching with Transfers
   Tao Wang, Fangming Liu, Jian Guo, Hong Xu
   IEEE INFOCOM 2016.
   

2015

1. Minimizing Transient Congestion during Network Update in Data Centers
   Jiaqi Zheng, Hong Xu, Guihai Chen, Haipeng Dai
   IEEE ICNP 2015.
   Best Paper Award

2014

1. Expeditus: Distributed Load Balancing with Global Congestion Information in Data Center Networks
   Peng Wang, Hong Xu
   ACM CoNEXT Student Workshop, 2014.
   Best Paper Award

2. Minimizing Transient Congestion during Network Update in Data Centers
   Jiaqi Zheng, Hong Xu, Guihai Chen, Haipeng Dai
   ACM CoNEXT Student Workshop, 2014.
   

3. Reducing Electricity Demand Charge for Data Centers with Partial Execution
   Hong Xu, Baochun Li
   ACM e-Energy, 2014.
   

4. TinyFlow: Breaking Elephants Down Into Mice in Data Center Networks
   Hong Xu, Baochun Li
   IEEE LANMAN, 2014.

5. RepFlow: Minimizing Flow Completion Times with Replicated Flows in Data Centers
   Hong Xu, Baochun Li
   IEEE INFOCOM, 2014.
   

6. Security-Aware Virtual Network Embedding
   Shuhao Liu, Zhiping Cai, Hong Xu, Ming Xu
   IEEE ICC, 2014.

Journal publications (in order of acceptance date)

1. Synchronize Only the Immature Parameters: Communication-Efficient Federated Learning By Freezing Parameters Adaptively
   Chen Chen, HX, Wei Wang, Baochun Li, Bo Li, Li Chen, Gong Zhang
   IEEE Transactions on Parallel and Distributed Systems, 2023.
   

2. GIFT: Towards Accurate and Efficient Federated Learning with Gradient-Instructed Frequency Tuning
   Chen Chen, HX, Wei Wang, Baochun Li, Bo Li, Li Chen, Gong Zhang
   IEEE Journal on Selected Areas of Commmunications, Special Issue on Communication-Efficient Distributed Learning over Networks, 2022.
   

3. ScaleFlux: Efficient Stateful Scaling in NFV
   Libin Liu, Hong Xu, Zhixiong Niu, Jingzong Li, Wei Zhang, Peng Wang, Jiamin Li, Jason Xue Chun, Cong Wang
   IEEE Transactions on Parallel and Distributed Systems, 2022.
   

4. Packet-in Request Redirection: A Load-balancing Mechanism for Minimizing Control Plane Response Time in SDNs
   Rui Xia, Haipeng Dai, Jiaqi Zheng, Hong Xu, Meng Li, Guihai Chen
   Elsevier Journal of Systems Architecture, 2022.
   

5. NetKernel: Making Network Stack Part of the Virtualized Infrastructure
   Zhixiong Niu, Qiang Su, Peng Cheng, Yongqiang Xiong, Dongsu Han, Keith Winstein, Jason Xue Chun, Hong Xu
   IEEE/ACM Transactions on Networking, 2021.
   

6. Bottleneck-Aware Non-Clairvoyant Coflow Scheduling with Fai
   Libin Liu, Chengxi Gao, Peng Wang, Hongming Huang, Jiamin Li, Hong Xu, Wei Zhang
   IEEE Transactions on Cloud Computing, 2021.
   

7. Flash: Joint Flow Scheduling and Congestion Control in Data Center Networks
   Chengxi Gao, Shuhui Chu, Hong Xu, Minxian Xu, Kejiang Ye, Chengzhong Xu
   IEEE Transactions on Cloud Computing, 2021.
   

8. Elasecutor: Elastic Executor Scheduling in Data Analytics Systems
   Libin Liu, Hong Xu
   IEEE/ACM Transactions on Networking, 2020.
   

9. Joint Switch-Controller Association and Control Devolution for SDN Systems: An Integrated Online Perspective of Control and Learning
   Xi Huang, Xinyu Tang, Ziyu Shao, Yang Yang, Hong Xu
   IEEE Transactions on Network and Service Management,
   Special Issue on Advanced Management of Softwarized Networks, 2020
   

10. Predictive Switch-Controller Association and Control Devolution for SDN Systems
    Xi Huang, Simeng Bian, Ziyu Shao, Hong Xu
    IEEE/ACM Transactions on Networking, 2020.
    

11. Stanza: Layer Separation for Distributed Training in Deep Learning
    Xiaorui Wu, Hong Xu, Bo Li, Yongqiang Xiong
    IEEE Transactions on Services Computing, 2020.
    

12. Sentinel: Failure Recovery in Centralized Traffic Engineering
    Jiaqi Zheng, Hong Xu, Xiaojun Zhu, Guihai Chen, Yanhui Geng
    IEEE/ACM Transactions on Networking, 2019.
    

13. Node-Constrained Traffic Engineering: Theory and Applications (tech report)
    George Trimponias, Yan Xiao, Xiaorui Wu, Hong Xu, Yanhui Geng
    IEEE/ACM Transactions on Networking, 2019.
    

14. Luopan: Sampling based Load Balancing in Data Center Networks
    Peng Wang, George Trimponias, Hong Xu, Yanhui Geng
    IEEE Transactions on Parallel and Distributed Systems, 2018.
    

15. C2Net: A Network-Efficient Approach to Collision Counting LSH Similarity Join
    Hangyu Li, Sarana Nutanong, Hong Xu, Chenyun Yu, Foryu Ha
    IEEE Transactions on Knowledge and Data Engineering, 2018.
    

16. THOR: A Scalable Hybrid Switching Architecture for Data Centers
    Xiaoshan Yu, Hong Xu, Huaxi Gu, Hao Lan
    IEEE Transactions on Communications, 2018.
    

17. On the Synchronization Bottleneck of OpenStack Swift-Like Cloud Storage Systems
    Mingkang Ruan, Titcheu Thierry, Ennan Zhai, Zhenhua Li, Yao Liu, Jinlong E, Yong Cui, Hong Xu
    IEEE Transactions on Parallel and Distributed Systems, 29(9):2059–2074, September 2018.

18. RepNet: Cutting Latency with Flow Replication in Data Center Networks
    Shuhao Liu, Hong Xu, Libin Liu, Wei Bai, Kai Chen, Zhiping Cai
    IEEE Transactions on Services Computing, 2018.

19. Resource Auto-Scaling and Sparse Content Replication for Video Storage Systems
    Di Niu, Hong Xu, Baochun Li
    ACM Transactions on Modeling and Performance Evaluation of Computing Systems, 2(4):19:1–19:30, November 2017.
    

20. Expeditus: Congestion-Aware Load Balancing in Clos Data Center Networks
    Peng Wang, Hong Xu, Zhixiong Niu, Dongsu Han, Yongqiang Xiong
    IEEE/ACM Transactions on Networking, 25(5):3175–3188, October 2017.
    

21. An Efficient Online Algorithm for Dynamic SDN Controller Assignment in Data Center Networks
    Tao Wang, Fangming Liu, Hong Xu
    IEEE/ACM Transactions on Networking, 25(5):2788–2801, October 2017.
    

22. An Alternating Direction Method Approach to Cloud Traffic Management
    Chen Feng, Hong Xu, Baochun Li
    IEEE Transactions on Parallel and Distributed Systems, 28(8):2145–2158, August 2017.

23. Congestion-Minimizing Network Update Data Centers
    Jiaqi Zheng, Hong Xu, Guihai Chen, Haipeng Dai, Jie Wu
    IEEE Transactions on Services Computing, 2016.

24. Exploiting Spatio-Temporal Diversity for Water Saving in Geo-Distributed Data Centers
    Mohammad A. Islam, Kishwar Ahmed, Hong Xu, Nguyen H. Tran, Gang Quan, Shaolei Ren
    IEEE Transactions on Cloud Computing, 6(3):734–746, July–September 2018.

25. Carbon-Aware Online Control of Geo-Distributed Cloud Services
    Zhi Zhou, Fangming Liu, Ruolan Zou, Jiangchuan Liu, Hong Xu, Hai Jin
    IEEE Transactions on Parallel and Distributed Systems, 27(9):2506–2519, September 2016.

26. Towards Security-Aware Virtual Network Embedding
    Shuhao Liu, Zhiping Cai, Hong Xu, Ming Xu
    Elsevier Computer Networks, 91:151–163, November 2015.

27. Spot Transit: Cheaper Internet Transit for Elastic Traffic (Supplementary material)
    Hong Xu, Baochun Li
    IEEE Transactions on Services Computing, 8(5):768–781, September 2015.

28. Temperature Aware Workload Management in Geo-Distributed Datacenters (Supplementary material)
    Hong Xu, Chen Feng, Baochun Li
    IEEE Transactions on Parallel and Distributed Systems, 26(6):1743–1753, June 2015.

29. An Optimization Framework for XOR-Assisted Cooperative Relaying in Cellular Networks
    Hong Xu, Baochun Li
    IEEE Transactions on Mobile Computing, 13(5):979–991, May 2014.

30. Dynamic Cloud Pricing for Revenue Maximization
    Hong Xu, Baochun Li
    IEEE Transactions on Cloud Computing, 1(2):158–171, July–December 2013.

Before joining CityU

Conference and workshop

1. Carbon-Aware Load Balancing for Geo-Distributed Cloud Services
   Zhi Zhou, Fangming Liu, Yong Xu, Ruolan Zou, Hong Xu, John C.S. Lui, Hai Jin
   IEEE MASCOTS, 2013.
   

2. Temperature Aware Workload Management in Geo-Distributed Datacenters
   Hong Xu, Chen Feng, Baochun Li
   USENIX ICAC, 2013.
   

3. Temperature Aware Workload Management in Geo-Distributed Datacenters
   Hong Xu, Chen Feng, Baochun Li
   ACM SIGMETRICS, Extended Abstract, 2013.

4. Joint Request Mapping and Response Routing for Geo-Distributed Cloud Services
   Hong Xu, Baochun Li
   IEEE INFOCOM, 2013.
   

5. Cost Efficient Datacenter Selection for Cloud Services
   Hong Xu, Baochun Li
   IEEE/CIC ICCC, 2012.

6. A General and Practical Datacenter Selection Framework for Cloud Services
   Hong Xu, Baochun Li
   IEEE CLOUD, 2012.
   

7. Maximizing Revenue with Dynamic Cloud Pricing: The Infinite Horizon Case
   Hong Xu, Baochun Li
   IEEE ICC, 2012.

8. Quality-Assured Cloud Bandwidth Auto-Scaling for Video-on-Demand Applications
   Di Niu, Hong Xu, Baochun Li, Shuqiao Zhao
   IEEE INFOCOM, 2012.
   

9. Risk Management for Video-on-Demand Servers Leveraging Demand Forecast
   Di Niu, Hong Xu, Baochun Li, Shuqiao Zhao.
   ACM Multimedia (MM), 2011, short paper.

10. Seen As Stable Marriages
    Hong Xu, Baochun Li
    IEEE INFOCOM, mini-conference, 2011.
    

11. Egalitarian Stable Matching for VM Migration in Cloud Computing
    Hong Xu, Baochun Li
    IEEE INFOCOM Workshop on Cloud Computing, 2011.

12. Efficient Resource Allocation with Flexible Channel Cooperation in OFDMA Cognitive Radio Networks
    Hong Xu, Baochun Li
    IEEE INFOCOM, 2010.
    

13. A Secondary Market for Spectrum
    Hong Xu, Jin Jin, Baochun Li
    IEEE INFOCOM, mini-conference, 2010.
    

14. Multicast Scheduling with Cooperation and Network Coding in Cognitive Radio Networks
    Jin Jin, Hong Xu, Baochun Li
    IEEE INFOCOM, 2010.
    

15. A Channel Portfolio Optimization Framework for Trading in a Spectrum Secondary Market
    Hong Xu, Jin Jin, Baochun Li
    IEEE ICC, 2010.

16. XOR-Assisted Cooperative Diversity in OFDMA Wireless Networks: Optimization Framework and Approximation Algorithms
    Hong Xu, Baochun Li
    IEEE INFOCOM, 2009.
    

17. YMMV: Multiple Session Multicast with MIMO
    Hong Xu, Jin Jin, Baochun Li
    IEEE Globecom, 2011.

Journal

1. Anchor: A Versatile and Efficient Framework for Resource Management in the Cloud (Supplementary material)
   Hong Xu, Baochun Li
   IEEE Transactions on Parallel and Distributed Systems, Special Issue on Cloud Computing, 24(6):1066–1076, June 2013.

2. Resource Allocation with Flexible Channel Cooperation in Cognitive Radio Networks (Supplementary material)
   Hong Xu, Baochun Li
   IEEE Transactions on Mobile Computing, 12(5):957–970, May 2013.

3. A Study of Pricing for Cloud Resources
   Hong Xu, Baochun Li
   ACM SIGMETRICS Performance Evaluation Review, Special Issue on Cloud Computing, 40(4):3–12, March 2013.

Book chapters

1. Network Coding in Relay-Based Networks
   Hong Xu, Baochun Li
   In Cooperative Cellular Wireless Networks, Ekram Hossain, Dong In Kim, Vijay Bhargava, Editors, Cambridge University Press, pp. 324–344, ISBN 978-0-521-76712-5, Hardback, 2011.

2. Network Coding in Bi-Directed and Peer-to-Peer Networks
   Zongpeng Li, Hong Xu, Baochun Li
   In Next-Generation Internet Architectures and Protocols, Byrav Ramamurthy, George Rouskas, Krishna Sivalingam, Editors, Cambridge University Press, pp. 359–377, ISBN 978-0-521-11368-7, Hardback, 2011