Keyphrases
- language model
- language modeling
- probabilistic model
- n gram
- document retrieval
- information retrieval
- speech recognition
- language modelling
- retrieval model
- statistical language models
- context sensitive
- vector space model
- query expansion
- test collection
- smoothing methods
- query terms
- pseudo relevance feedback
- relevance model
- translation model
- document length
- document ranking
- ad hoc information retrieval