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TKDE
2012
13 years 9 hour ago
2012
— This paper presents a method for identifying a set of dense subgraphs of a given sparse graph. Within the main applications of this “dense subgraph problem”, the dense subg...
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SIGCOMM
2010
ACM
14 years 9 months ago
2010
ACM
Recently, there has been much excitement in the research community over using social networks to mitigate multiple identity, or Sybil, attacks. A number of schemes have been propo...
WWW
2010
ACM
15 years 4 months ago
2010
ACM
We propose a novel method, based on concepts from expander graphs, to sample communities in networks. We show that our sampling method, unlike previous techniques, produces subgra...
COMPLEX
2009
Springer
15 years 4 months ago
2009
Springer
In this paper, we present our ongoing work on developing a framework for detecting time-varying communities on human mobile networks. We define the term community in environments ...
ICWSM
2009
14 years 7 months ago
2009
Events and stories can be characterized by a set of descriptive, collocated keywords. Intuitively, documents describing the same event will contain similar sets of keywords, and t...