Welcome to Xiaohan's Homepage

Hello, everyone! I am a Ph.D. candidate at CURRENT Lab, Department of Computer Science, University of California, Santa Barbara (UCSB).

As a Ph.D. candidate, I have taken part in some research programs, such as multicast, Network Coordinate (NC) and so on. Now I focus on Social Network. In these researches, I learnt more knowledge, skills of research and how to cooperate with others. I am working hard to be an excellent researcher.

Welcome everyone to visit my space and to share your experience with me by e-mail!

Education

Aug. 2009 – present
    Ph.D. candidate
  • Lab:  CURRENT Lab
  • Department:  Computer Science
  • University:  University of California, Santa Barbara (UCSB)  
  • Advisor:  Associate Professor Ben Y. Zhao
  • Research Interests:  Online Social Network
Sep. 2007 – Jul. 2009
    Master Candidate
  • University:  Electronic Engineering, Tsinghua University  
Aug. 2003 – Jul. 2007
    Undergraduate Student
  • University:  Electronic Engineering, Tsinghua University

Academic Experiences

Jun. 2011 - Present
Research Assistant
CURRENT Lab
Project: Dynamic Graph Analysis and Modeling
Description:
  • Analyze the evolution of dynamic graphs
  • Identify key dynamic features
  • Model the dynamics in graphs
    Apr. 2011 - Jun. 2011
    		Research Assistant
    CURRENT Lab
    Project: Crowdsurfing measurement and analysis
    Description:
  • Understand Crowdsurfing system structure and their work flow
  • Measure the tasks and revenue flow in Crowsurfing systems
  • Analyze information cascade on OSNs performed by Crowdsurfing systems
    Oct. 2010 - Apr. 2011
    		Research Assistant
    CURRENT Lab
    Project: Differential Privacy in Social Networks
    Description:
  • Defend de-anonymizing attack in Social Networks
  • Preserve Differential Privacy in anonymous social network data
    Aug. 2009 - Oct. 2010
    		Research Assistant
    CURRENT Lab
    Project: Online Social Network Measurement
    Description:
  • Map Social Network into Geometric Space and charaterize users with coordinates
  • Dynamically adapt coordinates to changes in social networks
  • Accuately estimate shortest path length

    News

    Jan 30, 2011
    		Our Crowd-sourcing paper is accepted by WWW 2012
    Jan 6, 2011
    		Boston Globe has a news about our Crowd-sourcing system.
    Dec. 13, 2011
    		Malicious crowd-sourcing systems are covered in Slashdot
    Dec. 12, 2011
    		MIT Technology Review has an acticle covering our work about malicious crowd-sourcing systems.click here
    Nov. 1-6, 2011
    		I am attending IMC'11 in Berlin, Germany.

    Publications

        
    • Gang Wang, Christo Wilson, Xiaohan Zhao, Yibo Zhu, Manish Mohanlal, Haitao Zheng, Ben Y. Zhao. Serf and Turf: Crowdturfing for Fun and Profit. To appear in Proceedings of the 21st International World Wide Web Conference (WWW 2012).Lyon, France, April 2012.
        
    • Xiaohan ZHAO, Alessandra Sala, Haitao Zheng and Ben Y. Zhao. Efficient Shortest Paths on Massive Social Graphs. Appear in Proceedings of The 7th International Conference on Collaborative Computing: Networking, Applications and Worksharing (CollaborateCom 2011), Orlando, USA, Oct 2011.
        
    • Xiaohan ZHAO, Xiaoxiao SONG, Xiao WANG, Yang CHEN, Beixing DENG, Xing LI. Analysis of Security Policy in Practical Internet Coordinates. Appear in International Journal of Security and Its Applications, Vol.3, No.1, 2009. (Invited Paper)
        
    • Xiaohan ZHAO, Xiaoxiao SONG, Xiao WANG, Yang CHEN, Beixing DENG, Xing LI. Attacks against Network Coordinate System: Vulnerable PIC. Appear in the 2008 International Symposium on Computer Science and its Applications (CSA'08), Hobart, Australia, Oct. 2008. [1](Accpetence Rate:101/388=26%) [2](published by IEEE CS and indexed by EI)
        
    • Xiaohan ZHAO, Xiaohui SHI, Yang CHEN, Beixing DENG. Design and implementation of multicast tree system oriented MDC. Journal of Xiamen University(Natural Science),Vol.46,Sup.2:216-218(in Chinese).
        
    • Xiaoxiao SONG, Xiaohan ZHAO, Eng Keong LUA, Zengbin ZHANG, Beixing DENG, Xing LI. SLINCS: A Social Link based Evaluation System for Network Coordinate Systems. (Short Paper).Appear 2009 6th Annual IEEE Consumer Communications & Networking Conference (CCNC'09), Las Vegas. (Acceptance Rate: 30%)
        
    • Yang Chen, Xiao Wang, Xiaoxiao Song, Eng Keong Lua, Cong Shi, Xiaohan Zhao, Beixing Deng, Xing Li. Phoenix: Towards an Accurate, Practical and Decentralized Network Coordinate System. Appear in 8th International IFIP-TC6 Networking Conference (Networking'09), Aachen, Germany, May.2009

    Honors & Awards

    2009-2010
    		 Regents Special International Fellow, UCSB
    2007-2008
    		 The Second Prize of the 26th Challenge Cup, Tsinghua University
    2006-2007
    		 Scholarship for Academic Excellence, Tsinghua University
    The Third Prize of the 25th Challenge Cup, Tsinghua University
    2004-2005
    		 Scholarship for Academic Excellence, Tsinghua University
    2003-2004
    		 Scholarship for Academic Excellence, Tsinghua University

    Friends

  • Yong Rang
    		•
  • Zengbin Zhang
    		•
  • Yang Chen
    		•