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