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SIGIR
2010
ACM
15 years 10 months ago
Uncovering social spammers: social honeypots + machine learning
Web-based social systems enable new community-based opportunities for participants to engage, share, and interact. This community value and related services like search and advert...
Kyumin Lee, James Caverlee, Steve Webb
CORR
2011
Springer
165views Education» more  CORR 2011»
14 years 10 months ago
Heterogeneous Cellular Networks with Flexible Cell Association: A Comprehensive Downlink SINR Analysis
In this paper we develop a tractable framework for SINR analysis in downlink heterogeneous cellular networks (HCNs) with flexible cell association policies. The HCN is modeled as...
Han-Shin Jo, Young Jin Sang, Ping Xia, Jeffrey G. ...
CHI
2009
ACM
16 years 7 months ago
Supporting volunteer activities with mobile social software
Many community organizations rely extensively on volunteer work. However, people who wish to help often have difficulties finding the time to volunteer. We are developing mobile s...
Shaun K. Kane, Predrag V. Klasnja
PERCOM
2007
ACM
16 years 6 months ago
A Capacitive Sensing Toolkit for Pervasive Activity Detection and Recognition
In this paper we present a toolkit for realizing capacitive sensing applications for human-computer interaction in pervasive computing systems. We argue that capacitive sensors - ...
Raphael Wimmer, Matthias Kranz, Sebastian Boring, ...
ECTEL
2009
Springer
16 years 1 months ago
Assessing Collaboration Quality in Synchronous CSCL Problem-Solving Activities: Adaptation and Empirical Evaluation of a Rating
The work described is part of an ongoing interdisciplinary collaboration between two research teams of the University of Patras, Greece and the University of Freiburg, Germany, whi...
Georgios Kahrimanis, Anne Meier, Irene-Angelica Ch...