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李永坤

  

电 话:(0551)63603412

E - Mailykli@ustc.edu.cn  

个人主页:http://staff.ustc.edu.cn/~ykli


主要研究方向:存储系统(key-value系统、文件系统、内存系统)、并行与分布式系统、云计算、虚拟化。

李永坤,男,副教授,硕士生导师,IEEEACMCCF会员,信息存储专委委员。2008年获中国科学技术大学计算机科学与技术学士学位,2012年获香港中文大学计算机科学博士学位,师从John C.S. Lui教授。2012-2013年在香港中文大学网络编码研究所担任博士后研究员,2013年底加入中国科学技术大学计算机学院。目前主要致力于存储系统方面的研究,在ATCSIGMETRICSINFOCOMDSNTCTPDSTCAD等会议与期刊发表论文40余篇,主持国家自然科学基金青年与面上项目、安徽省自然科学基金与企业合作项目,并参与科技部重点研发计划等多项科研项目。主要研究兴趣包括存储系统,比如key-value系统、文件系统、内存系统等,并行与分布式系统,以及云计算、虚拟化等场景下的I/O与内存管理优化等。


获奖情况

2017全国信息存储技术学术年会优秀论文

2016 王宽诚育才奖

2015 CCF-腾讯犀牛鸟基金优秀奖


主要论著

  1. Yongkun Li, Zhiyong Wu, Shuai Lin, Hong Xie, Min Lv, Yinlong Xu, John C.S. Lui. "Walking with Perception: Efficient Random Walk Sampling via Common Neighbor Awareness". 35th IEEE International Conference on Data Engineering (ICDE), Macau, SAR, China, April 2019.

  2. Xie Hong, Yongkun Li, John C.S. Lui. "Understanding Persuasion Cascades in Online Product Rating Systems". Thirty-Third AAAI Conference on Artificial Intelligence (AAAI), Hawaii, USA, Jan. 2019.

  3. Xie Hong, Yongkun Li, John C.S. Lui. "Optimizing Discount \& Reputation Trade-offs in E-commerce Systems: Characterization and Online Learning". Thirty-Third AAAI Conference on Artificial Intelligence (AAAI), Hawaii, USA, Jan. 2019.

  4. Helen H. W. Chan, Yongkun Li, Patrick P. C. Lee, and Yinlong Xu. "Elastic Parity Logging for SSD RAID Arrays: Design, Analysis, and Implementation." IEEE Transactions on Parallel and Distributed Systems (TPDS), volume: 29, issue: 10, Oct. 2018.

  5. Yongkun Li, Neng Wang, Chengjin Tian, Si Wu, Yueming Zhang, Yinlong Xu. "A Hierarchical RAID Architecture Towards Fast Recovery and High Reliability." IEEE Transactions on Parallel and Distributed Systems (TPDS), volume: 29, issue: 4, pp. 734 - 747, April 2018.

  6. Helen H. W. Chan, Yongkun Li*, Patrick P. C. Lee, and Yinlong Xu. "HashKV: Enabling Efficient Updates in KV Storage via Hashing." Proceedings of the 2018 USENIX Annual Technical Conference (USENIX ATC 2018), Boston, MA, USA, July 2018.

  7. Fan Guo, Junping Zhao, Yongkun Li*, Kun Wang, Yinlong Xu, John C. S. Lui. "DCUDA: Dynamic GPU Sharing via Live Migration." Proceedings of the 2018 USENIX Annual Technical Conference, Poster (USENIX ATC 2018 Poster), Boston, MA, USA, July 2018.

  8. Yueming Zhang, Yongkun Li*, Fan Guo, Cheng Li, Yinlong Xu. "ElasticBF: Fine-grained and Elastic Bloom Filter Towards Efficient Read for LSM-tree-based KV Stores." The 10th USENIX Workshop on Hot Topics in Storage and File Systems (USENIX HotStorage 2018), Boston, MA, USA, July 2018.

  9. Chen Yang, Min Lyu, Yongkun Li, Qianqian Zhao and Yinlong Xu. "SSRW: A Scalable Algorithm for Estimating Graphlet Statistics Based on Random Walk." The 23rd International Conference on Database Systems for Advanced Applications (DASFAA), Australia, May 2018.

  10. Yongkun Li, Biaobiao Shen, Yubiao Pan, Yinlong Xu, Zhipeng Li, and John C. S. Lui. "Workload-aware Elastic Striping with Hot Data Identification for SSD RAID Arrays." IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems (TCAD), vol. 36, no. 5, pp. 815-828, May 2017.

  11. Zhipeng Li, Yinlong Xu, Yongkun Li, Chengjin Tian, Youhui Bai.  "PDS: An I/O-Efficient Scaling Scheme for Parity Declustered Data Layout." Proceedings of the 46th International Conference on Parallel Processing (ICPP), Bristol, UK, August 2017. 

  12. Fan Guo, Yongkun Li*, Yinlong Xu, Song Jiang, John C. S. Lui.  "SmartMD: A High Performance Deduplication Engine with Mixed Pages." Proceedings of the 2017 USENIX Annual Technical Conference (ATC), Santa Clara, CA, USA, July 2017. 

  13. Shuzhan Wei, Yongkun Li*, Yinlong Xu, and Si Wu. "DSC: Dynamic Stripe Construction for Asynchronous Encoding in Clustered File System."  IEEE International Conference on Computer Communications (INFOCOM), Atlanta, USA, May 2017.

  14. Pengpeng Zhao, Yongkun Li*, Hong Xie, Zhiyong Wu, Yinlong Xu, John C. S. Lui. "Measuring and Maximizing Influence via Random Walk in Social Activity Networks."  The 22nd International Conference on Database Systems for Advanced Applications (DASFAA), Suzhou, China, March 2017.

  15. Xiaowei Chen, Yongkun Li, Pinghui Wang, and John C.S. Lui. "A General Framework for Estimating Graphlet Statistics via Random Walk." The VLDB Conference, 2017.

  16. Si Wu, Yinlong Xu, Yongkun Li, Zhijia Yang. "I/O-Efficient Scaling Schemes for Distributed Storage Systems with CRS Codes." IEEE Transactions on Parallel and Distributed Systems (TPDS), 27(9):2639 - 2652, Sep. 2016.

  17. Yubiao Pan, Yongkun Li*, Yinlong Xu, Biaobiao Shen. "DCS: Diagonal Coding Scheme for Enhancing the Endurance of SSD-based RAID Arrays." IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems (TCAD), 35(8):1372 - 1385, Aug. 2016.

  18. Yongkun Li, Patrick P. C. Lee, John C. S. Lui. "Analysis of Reliability Dynamics of SSD RAID." IEEE Transactions on Computers (TC), 65(4):1131-1144, April 2016.

  19. Yongkun Li, Helen H. W. Chan, Patrick P. C. Lee, and Yinlong Xu. "Elastic Parity Logging for SSD RAID Arrays."  Proceedings of the 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), Toulouse, France, June 2016.

  20. Neng Wang, Yinlong Xu, Yongkun Li, and Si Wu. "OI-RAID: A Two-layer RAID Architecture Towards Fast Recovery and High Reliability." Proceedings of the 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), Toulouse, France, June 2016.

  21. Si Wu, Yinlong Xu, Yongkun Li, Yunfeng Zhu. "POS: A Popularity-based Online Scaling Scheme for RAID-Structured Storage Systems." Proceedings of the 33rd IEEE International Conference on Computer Design (ICCD), New York City, USA, October 2015.

  22. Yubiao Pan, Yongkun Li, Yinlong Xu, Zhipeng Li. "Grouping-based Elastic Striping with Hotness Awareness for Improving SSD RAID Performance." Proceedings of the 45th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN) (Regular paper), Rio de Janeiro, Brazil, June 2015.

  23. Yongkun Li, John C. S. Lui. "Friends or Foes: Distributed and Randomized Algorithms to Determine Dishonest Recommenders in Online Social Networks." IEEE Transactions on Information Forensics and Security (TIFS), 9(10):1695-1707, Oct. 2014.

  24. Yongkun Li, Patrick P. C. Lee, John C. S. Lui.  "Stochastic Analysis on RAID Reliability for Solid-State Drives." Proceedings of the 32nd IEEE International Symposium on Reliable Distributed Systems (SRDS), Braga, Portugal, October 2013. 

  25. Yongkun Li, Patrick P. C. Lee, John C. S. Lui. "Stochastic Modeling of Large-Scale Solid-State Storage Systems: Analysis, Design Tradeoffs and Optimization." Proceedings of ACM SIGMETRICS (Full paper), Pittsburgh, PA, June 2013. 




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