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