Xiaoyan Li

Associate Professor
Department of Computer Science
Lafayette College, Easton, PA 18042

my email
610-330-5416
522 Acopian Engineering center

my photo


Teaching

  • CS102 Principles of Computer Science I - Spring 2007 (labs), Fall 2007, Fall 2008, Fall 2009, Fall 2010

  • CS103 Principles of Computer Science II - Fall 2006

  • CS105 Digital Media Computing - Fall 2011, Fall 2012

  • CS106 Personal Robotics - Spring 2013

  • CS150L Data Structures and Algorithms (labs) - Spring 2013

  • CS202 Analysis of Algorithms - Fall 2008, Fall 2009, Fall 2011, Fall 2012

  • CS205 Software Engineering - Spring 2008, Spring 2009 (labs), Spring 2011 (labs), Spring 2012 (labs)

  • CS305 Computer Networks - Spring 2007, Spring 2009, Spring 2011, Spring 2013

  • CS406 Operating System - Spring 2008, Spring 2012

  • CM261 Introduction to Numerical Computing for Engineers - Spring 2011, Spring 2012

Research

My research interests are in wireless networks, sensor networks, mobile computing, and distributed systems. In wireless and sensor networks, I am interested in efficient wireless communication, wireless transmission modeling, and localization. In distributed systems, my interests are in modeling performance and reliability characteristics of Internet services. My current research focuses on wireless localization systems, addressing issues such as accuracy, robustness to attacks, and reduction of computational cost and deployment overhead.

Wireless Localization

Computational Cost
  • John Keller, Xiaoyan Li, "Reducing the Computational Cost of Ratio-based Indoor Localization", in proceedings of the 6th International Workshop on Wireless Mesh and Ad Hoc Networks in conjunction with the International Conference on Computer Communication Networks (ICCCN-WiMAN), July 2012.

Robustness to Attacks
  • Xiaoyan Li, Yingying Chen, Jie Yang, Xiuyuan Zheng, "Achieving Robust Wireless Localization Resilient to Signal Strength Attacks", in Springer Wireless Networks (WiNET), the Journal of Mobile Communication, Computation and Information, Volume 18, Issue 1, January 2012.

  • Xiaoyan Li, Yingying Chen, Jie Yang, Xiuyuan Zheng, "Designing Localization Algorithms Robust to Signal Strength Attacks", in Proceedings of IEEE International Conference on Computer Communications (INFOCOM), mini-conference, April. 2011. (Acceptance rate: 23.4%)

  • Xiaoyan Li, ``Designing Localization Algorithms Robust to Signal Strength Attacks'', poster abstract, in Proceedings of the 7th IEEE International Conference on Sensor and Ad hoc Communications and Networks (SECON), June. 2010

  • Yingying Chen, Konstantinos Kleisouris, Xiaoyan Li, Wade Trappe, Richard P. Martin, "A Security and Robustness Performance Analysis of Localization Algorithms to Signal Strength Attacks," in ACM Transactions on Sensor Networks (ACM TOSN), Volume 5, Issue 1, February 2009.

  • Yingying Chen, Konstantinos Kleisouris, Xiaoyan Li, Wade Trappe, Richard P. Martin, "The Robustness of Localization Algorithms to Signal Strength Attacks: A Comparative Study", in Proceedings of the 2006 International Conference on Distributed Computing in Sensor Systems (DCOSS), Jun. 2006. (Acceptance rate: 30%)

Deployment Concern
  • Xiaoyan Li, ``Ratio-based Zero-profiling Indoor Localization'', in Proceedings of the 6th IEEE International Conference on Mobile Ad-hoc and Sensor Systems (MASS), Oct. 2009. (Acceptance rate: 25.3%)

Accuracy
  • Xiuyuan Zheng, Hongbo Liu, Jie Yang, Yingying Chen, John-Austen Francisco, Richard Martin, Xiaoyan Li, ``Characterizing the Impact of Multi-frequency and Multi-power on Localization Accuracy'', in Proceedings of the 7th IEEE International Conference on Mobile Ad-hoc and Sensor Systems (MASS), Nov. 2010. (Acceptance rate: 27.6%)

  • Xiaoyan Li, Richard P. Martin, ``Simple Algorithm Aggregation Improves Signal Strength Based Localization'', in Proceedings of the IEEE International Symposium on Wireless Pervasive Computing (ISWPC), May. 2008.

  • Eiman Elnahrawy, Xiaoyan Li, and Richard P. Martin, "The Limits of Localization Using RSS", Research poster in Proceedings of The Second ACM Conference on Embedded Networked Sensor Systems (SenSys'04), Baltimore, Maryland, November, 2004.

  • Eiman Elnahrawy, Xiaoyan Li, Richard P. Martin, "Using Area-based Presentations and Metrics for Localization Systems in Wireless LANs", in Proceedings of the 4th International IEEE Workshop on Wireless Local Networks (WLN), Nov. 2004.

  • Eiman Elnahrawy, Xiaoyan Li, Richard Martin, ``The Limits of Localization Using Signal Strength: A Comparative Study'', in Proceedings of the 1st IEEE International Conference on Sensor and Ad hoc Communications and Networks (SECON), Oct. 2004. (Acceptance rate: 18.1%)       - Best Paper Award

System Modeling, Design and Implementation
  • Yingying Chen, Gayathri Chandrasekaran, Eiman Elnahrawy, John-Austen Francisco, Konstantinos Kleisouris, Xiaoyan Li, Richard P. Martin, Robert S. Moore, Begumhan Turgut, "GRAIL: A General Purpose Localization System," in Sensor Review, special edition, Localisation Systems, Vol. 28, No. 2, pp.115-124, 2008.

  • Yingying Chen, Eiman Elnahrawy, John-Austin Francisco, Konstantinos Kleisouris, Xiaoyan Li, Hongyi Xue, Richard P. Martin, ``GRAIL: General Real-Time Adaptable Indoor Localization'', Demo Abstract, in Proceedings of the 4th ACM Conference on Embedded Networked Sensor Systems (SenSys), Nov. 2006.

  • Xiaoyan Li, Richard P. Martin, "A Simple Ray-Sector Signal Strength Model for Indoor 802.11 Networks", in Proceedings of the 2nd IEEE International Conference on Mobile Ad-hoc and Sensor Systems (MASS), Nov. 2005. (Acceptance rate: 33%) 

Wireless Sensor Networks: Power Control, Architecture Design

  • Xiaoyan Li, Thu D.Nguyen, Richard P.Martin, "Using Adaptive Range Control to Maximize 1-Hop Broadcast Coverage in Dense Wireless Networks", in Proceedings of the 1st IEEE International Conference on Sensor and Ad hoc Communications and Networks (SECON), Oct. 2004. (Acceptance rate: 18.1%)

  • Xiaoyan Li, Thu D. Nguyen, Richard P. Martin, "An Analytic Model Predicting the Optimal Range for Maximizing 1-HopBroadcast Coverage in Dense Wireless Networks", in Proceedings of the 3rd International Conference on AD-HOC Networks & Wireless (ADHOC-NOW), Jul. 2004. (Acceptance rate: 17.6%)

  • Xiaoyan Li, Thu D.Nguyen, Richard P.Martin, "Using Adaptive Range Control to Optimize 1-Hop Broadcast Coverage in Dense Wireless Networks", poster abstract, in Proceedings of The First ACM Conference on Embedded Networked Sensor Systems (SenSys'03), Los Angeles, California, November, 2003.

  • Andrew Tjang, Michael Pagliorola, Hiral Patel, Xiaoyan Li, Richard P. Martin, "Active Tapes: Bus-Based Sensor Networks", in Proceedings of The 1st IEEE Workshop on Embedded Networked Sensors (EmNetS-I) - short paper, Nov. 2004.
    A longer version published as Technical Report DCS-TR-557, Rutgers University, July. 2004.

Distributed Systems: Performance and Reliability Modeling

  • Kiran Nagaraja, Xiaoyan Li, Bin Zhang, Ricardo Bianchini, Richard P. Martin, and Thu D. Nguyen, "Using Fault Injection and Modeling to Evaluate the Performability of Cluster-Based Services", in Proceedings of the 4th USENIX Symposium on Internet Technologies and Systems (USITS), Mar. 2003. (Acceptance rate: 27%)

  • Xiaoyan Li, Richard P. Martin, Kiran Nagaraja, Thu D. Nguyen and Bin Zhang, "Mendosus: A SAN-based Fault-Injection Test-Bed for Construction of Highly Available Network Services", In Proceedings of the 1st Workshop on Novel Uses of System Area Networks (SAN-1), Feb. 2002.