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CIKM
2005
Springer
13 years 10 months ago
2005
Springer
Testing reachability between nodes in a graph is a well-known problem with many important applications, including knowledge representation, program analysis, and more recently, bi...
CIKM
2004
Springer
13 years 10 months ago
2004
Springer
It is crucial in many information systems to organize short text segments, such as keywords in documents and queries from users, into a well-formed topic hierarchy. In this paper,...