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The SAND Lab (Systems, Algorithms, Networking and Data) at UCSB is co-directed by Professor Ben Y. Zhao and Professor Heather Zheng. Our research spans topics in networked systems, social networks, wireless networks, security, data mining and modeling. Lab members includes PhD and MS students, undergraduate researchers, and visiting researchers and scholars. For prospective students interested in joining the lab, please read this FAQ on UCSB, and then our lab information here.

Welcome to incoming students!

We're thrilled that an exceptional group of new students will be joining SANDLab this fall (2014), including Zhijing Li, Bingjie Liu, Shiliang Tang, Da Zhang, Xinyi Zhang, and Yanzi Zhu. Welcome!

Current Research Areas

Research at the SAND lab encompasses topics across multiple areas, most heavily centered around three core areas: wireless and mobile systems, social networks: measurements and security, and graph analysis and modeling. Please see individual links below for more information on specific ongoing projects and related publications.

Wireless and Mobile Systems

  • Projects
  • Wireless Links in Data Centers
  • Wireless Measurements and Systems
  • Dynamic Spectrum Systems and Security

Social Networks: Measurements and Security

  • Projects
  • Malicious Crowdsourcing and Defenses
  • Detecting Spam and Sybils in Social Networks
  • Measurements of Social Systems and Networks

Graph Analysis and Modeling


Recent Papers (2013-2014)

  • ICWSM: Link and Triadic Closure Delay: Temporal Metrics for Social Network Dynamics
  • TKDD: Uncovering Sybils in the Wild
  • Hotnets: On the Validity of Geosocial Mobility Traces
  • VLDB: On the Embeddability of Random Walk Distances
  • TWEB: Understanding Latent Interactions in Online Social Networks
  • IMC: Follow the Green: Growth and Dynamics in Twitter Follower Markets
  • Usenix Security: You are How You Click: Clickstream Analysis for Sybil Detection
  • ACM SIGMETRICS: Practical Conflict Graphs for Dynamic Spectrum Distribution
  • WWW: Wisdom in the Social Crowd: an Analysis of Quora
  • NDSS: Social Turing Tests: Crowdsourcing Sybil Detection

Available Software Downloads
* Measurement-calibrated graph models
* Graph Coordinate Systems (Orion, Rigel, Leo)

News and Upcoming Deadlines

  • CFP: 4/30-5/7: IMC 2014
  • CFP: 5/16: CCS
  • CFP: NSF SaTC, 9/19-Med, 1/14/15-Small

  • 3/2014: Congrats to Xiaohan on her ICWSM paper (dynamic graph metrics)
  • 9/2013: Congrats to ZZB, Lin, Xiaohan and Gang on their Hotnets paper (4Sq traces)!
  • 8/2013: Congrats to Xiaohan/Allen on their VLDB paper (embedding random walks)!
  • 7/2013: NSF funding on dynamic graphs!
  • 7/2013: New NSF funding on 60GHz wireless!
  • 6/2013: SIGMETRICS paper wins "Best Practical Paper Award"