张晗-清华大学网络科学与网络空间研究院

研究概况

在安全可控的IPv6下一代互联网体系结构领域已开展十余年基础理论研究和核心技术攻关，在网络方向顶级学术会议（INFOCOM、ICNP、IWQoS）、期刊（TON、TPDS、TIFS、CN，JNCA）等发表多篇论文，研究成果在网络基础设施建设和运行中得到深入应用。

近年来，在路由和传输机制优化、网络/系统异常检测，网络态势感知等方面取得的重点研究成果包括：

1.路由和传输机制优化：针对数据中心、域内和域间等不同场景，研究了路由和传输机制的优化模型、方法和高效算法，主要包括域内/域间多路径算法、快速重路由方法、流量工程方法，数据中心拥塞控制算法、单流/多流调度算法。

2.网络/系统异常检测：针对网络流量，各类系统，采用机器学习，深度学习，优化理论，形式化测试等进行异常检测和异常定位的研究。提出一系列异常检测，异常定位，根因分析机制。

3.态势感知：以系统或者安全等大数据为基础，对环境要素，用户行为，各类事件在时间或空间上感知，分析和预测。提升了网络和系统的资源利用率，优化了用户体验，保障了系统安全。

学术成果

[1] Han Zhang, Xingang Shi*, Xia Yin, Wang, Zhiliang, Haijun Geng, Yahui Li, Qianhong Wu, "DA&FD-Deadline-Aware and Flow Duration-Based Rate Control for Mixed Flows in DCNs." IEEE/ACM Transactions on Networking, 27(6):2458-2471, 2019

[2] Han Zhang, Xingang Shi*, Yingya Guo, Zhiliang Wang, and Xia Yin. "More load, more differentiation—Let more flows finish before deadline in data center networks." Computer Networks127 (2017): 352-367.

[3] Han Zhang, Xingang Shi, Xia Yin, Fengyuan Ren, and Zhiliang Wang. "More load, more differentiation—A design principle for deadline-aware congestion control." In 2015 IEEE Conference on Computer Communications (INFOCOM), pp. 127-135. IEEE, 2015

[4] Han Zhang, Xingang Shi, Xia Yin, Zhiliang Wang, and YingYa Guo. "Fdrc-flow duration time based rate control in data center networks." In 2016 IEEE/ACM 24th International Symposium on Quality of Service (IWQoS), pp. 1-10. IEEE, 2016.

[5] Han Zhang, Xingang Shi, Xia Yin, and Zhiliang Wang. " Efficient scheduling of weighted coflows in data centers." In 2017 IEEE 25th International Conference on Network Protocols (ICNP), pp. 1-2. IEEE, 2017.

[6] Zhiliang Wang, Han Zhang*, Xingang Shi, Xia Yin, Haijun Geng, Yahui Li, Qianhong Wu. "Efficient Scheduling of Weighted Coflows in Data Centers." IEEE Transactions on Parallel and Distributed Systems 30.9 (2019): 2003-2017

[7] Shangbin Han, Qianhong Wu, Han Zhang*, Bo Qin, Jiankun Hu, Xingang Shi, Linfeng Liu, Xia Yin:Log-Based Anomaly Detection With Robust Feature Extraction and Online Learning. IEEE Trans. Inf. Forensics Security. 16: 2300-2311 (2021)

[8] Xiao Ma, Chuang Lin, Han Zhang*, and Jianwei Liu. "Energy-aware computation offloading of IoT sensors in cloudlet-based mobile edge computing." Sensors 18, no. 6 (2018): 1945.

[9] Yingya Guo, Zhiliang Wang*, Han Zhang, Xia Yin, Xingang Shi, Jianping Wu (2019). "Joint optimization of tasks placement and routing to minimize Coflow Completion Time". Journal of Network and Computer Applications.

[10] Haijun Geng, Han Zhang, Xia Yin, Xingang Shi*, Zhiliang Wang (2019). " Efficient Computation of Loop-free Alternates ". Journal of Network and Computer Applications.

[11] Yingya Guo, Zhiliang Wang, Xia Yin, Xingang Shi, Jianping Wu, and Han Zhang. "Incremental deployment for traffic engineering in hybrid SDN network." In 2015 IEEE 34th International Performance Computing and Communications Conference (IPCCC), pp. 1-8. IEEE, 2015.

[12] Haijun Geng, Xingang Shi, Xia Yin, Zhiliang Wang, and Han Zhang. "Algebra and algorithms for efficient and correct multipath QoS routing in link state networks." In 2015 IEEE 23rd International Symposium on Quality of Service (IWQoS), pp. 261-266. IEEE, 2015.

[13] Zongyi Zhao, Qing Li, Mingwei Xu, Xingang Shi, and Han Zhang. "Reduce completion time and guarantee throughput by transport with slight congestion." In 2016 IEEE International Conference on Communications (ICC), pp. 1-6. IEEE, 2016.

[14] Yahui Li, Xia Yin, Zhiliang Wang*, Jiangyuan Yao, Xingang Shi, Jianping Wu, Han Zhang, and Qing Wang. "A Survey on Network Verification and Testing With Formal Methods: Approaches and Challenges." In IEEE Communications Surveys & Tutorials 21, no. 1 (2019): 940-969.