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CIKM
2008
Springer
13 years 10 months ago
Combining concept hierarchies and statistical topic models
Statistical topic models provide a general data-driven framework for automated discovery of high-level knowledge from large collections of text documents. While topic models can p...
Chaitanya Chemudugunta, Padhraic Smyth, Mark Steyv...
SEMWEB
2009
Springer
14 years 3 months ago
Mapping-chains for Studying Concept Shift in Political Ontologies
Abstract. For some years now ontologies have been used in Social Science, e.g. , in annotation of newspaper articles for disambiguating concepts within Media Analysis. These ontolo...
Shenghui Wang, Stefan Schlobach, Janet Takens, Wou...
MCAM
2007
Springer
129views Multimedia» more  MCAM 2007»
14 years 2 months ago
Learning Concepts by Modeling Relationships
Supporting multimedia search has emerged as an important research topic. There are three paradigms on the research spectrum that ranges from the least automatic to the most automat...
Yong Rui, Guo-Jun Qi
MM
2009
ACM
168views Multimedia» more  MM 2009»
14 years 1 months ago
Identifying news videos' ideological perspectives using emphatic patterns of visual concepts
Television news has become the predominant way of understanding the world around us, but individual news broadcasters can frame or mislead an audience’s understanding of politic...
Wei-Hao Lin, Alexander G. Hauptmann
COLT
1992
Springer
14 years 24 days ago
Learning Switching Concepts
We consider learning in situations where the function used to classify examples may switch back and forth between a small number of different concepts during the course of learnin...
Avrim Blum, Prasad Chalasani