Keyphrases
- language model
- language modeling
- information retrieval
- document retrieval
- n gram
- speech recognition
- language modelling
- query expansion
- test collection
- context sensitive
- retrieval model
- probabilistic model
- statistical language models
- smoothing methods
- query terms
- ad hoc information retrieval
- relevance model
- passage retrieval
- pseudo relevance feedback
- statistical language modeling
- language models for information retrieval
- okapi bm
- vector space model
- search engine