Semi-subsumed Events: A Probabilistic Semantics of the BM25 Term Frequency Quantification.
Hengzhi WuThomas RoellekePublished in: ICTIR (2009)
Keyphrases
- term frequency
- divergence from randomness
- text categorization
- tf idf
- retrieval model
- bag of words
- text classification
- average precision
- text documents
- term weighting
- okapi bm
- probabilistic model
- document frequency
- document representation
- query terms
- retrieval effectiveness
- bayesian networks
- query expansion
- generative model
- language model
- information retrieval systems
- retrieval systems
- information retrieval
- natural language
- vector space model
- vector space
- image content
- test collection
- action recognition
- keywords
- feature selection