Improvements to BM25 and Language Models Examined.
Andrew TrotmanAntti PuurulaBlake BurgessPublished in: ADCS (2014)
Keyphrases
- language model
- retrieval model
- document retrieval
- okapi bm
- language modeling
- information retrieval
- ir models
- document length
- test collection
- probabilistic model
- term weighting
- n gram
- speech recognition
- term frequency
- retrieval effectiveness
- text retrieval
- query expansion
- smoothing methods
- vector space model
- ad hoc information retrieval
- divergence from randomness
- mixture model
- context sensitive
- statistical language models
- language modelling
- query terms
- tf idf
- ranking functions
- document ranking
- translation model
- document representation
- relevance model
- latent semantic indexing
- pseudo relevance feedback
- language models for information retrieval
- term dependencies
- query specific
- passage retrieval
- dirichlet prior