Keyphrases
- language model
- language modeling
- document retrieval
- language modelling
- speech recognition
- n gram
- probabilistic model
- information retrieval
- query expansion
- test collection
- smoothing methods
- retrieval model
- statistical language models
- language models for information retrieval
- language model for information retrieval
- ad hoc information retrieval
- query terms
- context sensitive
- document ranking
- standard model
- database systems