Keyphrases
- language model
- cooperative
- language modeling
- n gram
- document retrieval
- probabilistic model
- speech recognition
- query expansion
- statistical language models
- language modelling
- information retrieval
- test collection
- retrieval model
- relevance model
- ad hoc information retrieval
- context sensitive
- vector space model
- pseudo relevance feedback
- smoothing methods
- translation model
- document ranking
- query terms
- word error rate
- information extraction
- okapi bm
- image retrieval