Junxue Zhang 张骏雪


Ph.D. Candidate

Hong Kong University of Science and Technology

jzhangcs [at] cse [dot] ust [dot] hk

Curriculum Vitae

Junxue ZHANG is a Ph.D. candidate of computer science at iSINGLab, Hong Kong University of Science and Technology. He is under supervision of Prof. Kai CHEN. His research interests are data center networking, AI systems and privacy preserving computation. He is the co-founder/CTO of Clustar Technology Co., Ltd. He is in the TSC of federated machine learning framework: FATE.

Before joining HKUST, he received his BSc and MSc from Southeast University.

Research Projects

Data Center Networking

  1. Traditional DCN: Load balance in the wild [Hermes, SIGCOMM 17] , ECN with RTT variations [ECN#, CoNEXT 19]

  2. Machine Learning for Networking: Efficient neural network deployment in kernel datapath [LiteFlow, SIGCOMM 22] , Multi-objective RL for CC [MOCC, EuroSys 22]

  3. Networking for Machineg Learning: New transport [MLT, APNet 19] , Efficient parameter aggregation [RAT, APNet 20]

Privacy-preserving Computation

  1. Federated Learning: Measurement [Quantifying, FL-IJCAI 2019] , Verification [Aegis, FL-IJCAI 2021] , Hardware acceleration [FLASH, under submission] , Communication acceleration [undergoing] , SVD [FedSVD, KDD 2022], SplitNN [SFA, FL-IJCAL 2022], Recommender system [FedMMF, FL-IJCAL 2022]

  2. Fully Homomorphic Encryption: Hardware acceleration [undergoing]

  3. New Secure Protocol Design: HE + DP [Sphinx, S&P22]


Conference Paper

  1. LiteFlow: Towards High-performance Adaptive Neural Networks for Kernel Datapath
    Junxue Zhang, Chaoliang Zeng, Hong Zhang, Shuihai Hu, Kai Chen
    SIGCOMM 2022 (To appear)

  2. Practical Lossless Federated Singular Vector Decomposition Over Billion-Scale Data
    Di Chai, Leye Wang, Junxue Zhang, Liu Yang, Shuowei Cai, Kai Chen, Qiang Yang
    KDD 2022 (To appear)

  3. Multi-Objective Congestion Control
    Yiqing Ma, Han Tian, Xudong Liao, Junxue Zhang, Weiyan Wang, Kai Chen, Xin Jin
    EuroSys 2022

  4. Sphinx: Enabling Privacy-Preserving Online Learning over the Cloud
    Han Tian, Chaoliang Zeng, Zhenhang Ren, Di Chai, Junxue Zhang, Kai Chen, Qiang Yang
    S&P 2022

  5. Enabling ECN for Datacenter Networks with RTT Variations
    Junxue Zhang, Wei Bai, Kai Chen
    CoNEXT 2019
    [paper] [code]

  6. Resilient Datacenter Load Balancing in the Wilds
    Hong Zhang, Junxue Zhang, Wei Bai, Kai Chen, Chowdhury Mosharaf
    SIGCOMM 2017
    [paper] [code]

Workshop Paper

  1. Practical and Secure Federated Recommendation with Personalized Masks
    Liu Yang, Junxue Zhang, Di Chai, Leye Wang, Kuo Guo, Kai Chen, Qiang Yang
    FL-IJCAI 2022

  2. Secure Forward Aggregation for Vertical Federated Neural Networks
    Shuowei Cai, Di Chai, Liu Yang, Junxue Zhang, Yilun Jin, Leye Wang, Kun Guo, Kai Chen
    FL-IJCAI 2022

  3. Aegis: A Trusted, Automatic and Accurate Verification Framework for Vertical Federated Learning
    Cengguang Zhang, Junxue Zhang, Di Chai, Kai Chen
    FL-IJCAI 2021 (Best Application Paper Award)

  4. Resilient Allreduce Tree for Distributed Machine Learning
    Xinchen Wan, Hong Zhang, Hao Wang, Shuihai Hu, Junxue Zhang, Kai Chen
    APNet 2020

  5. Quantifying the Performance of Federated Transfer Learning
    Qinghe Jing, Weiyang Wang, Junxue Zhang, Han Tian, Kai Chen
    FL-IJCAI 2019 (Best Student Paper Award)

  6. Rethinking Transport Layer Design for Distributed Machine Learning
    Jiachen Xia, Gaoxiong Zeng, Junxue Zhang, Weiyang Wang, Wei Bai, Junchen Jiang, Kai Chen
    APNet 2019

  7. Bridging the Edge-Cloud Barrier for Real-time Advanced Vision Analytics
    Yiding Wang, Weiyang Wang, Junxue Zhang, Junchen Jiang, Kai Chen
    HotCloud 2019

Google Scholar

Industry Experience

2018 - Now, Co-founder/CTO, Clustar Technology Co., Ltd

Professional Services & Activities

  1. IEEE Transaction on Big Data Reviewer

  2. FL-IJCAI 2021, FL-IJCAI 2022, FL-AAAI 2022 TPC Member

  3. FATE Maintainer


  1. SIGCOMM 17 Travel Grants, 2017

  2. Postgraduate Fellowship, HKUST

  3. Google Excellent Student Scholarship, 2012

  4. National Scholarship 2014, 2011


Junxue is an amateur photographer mainly at landscape and sometimes portrait. He likes coffee, and is a fresh man in latte art. He also has a not very large collection of Lego. Junxue has 1 cat named Little Silver (小盐) & 2 dogs named Little White (小白) and Big White (大白).