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201
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CIKM
2004
Springer
16 years 9 days 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,...
171
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VLDB
2005
ACM
16 years 12 days ago
2005
ACM
Cost-based query optimizers need to estimate the selectivity of conjunctive predicates when comparing alternative query execution plans. To this end, advanced optimizers use multi...
177
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OHS
2001
Springer
15 years 11 months ago
2001
Springer
The size of Internet has been growing very fast and many documents appear every day in the Net. Users find many problems to obtain the information that they really need. In order t...
189
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MKWI
2008
15 years 8 months ago
2008
: Language offers human beings the ability to exchange information. Whether the information is understood or not depends on the structure, complexity and knowledge of the language....
293
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GIS
2008
ACM
16 years 8 months ago
2008
ACM
The pervasiveness of location-acquisition technologies (GPS, GSM networks, etc.) enable people to conveniently log the location histories they visited with spatio-temporal data. T...