Keyphrases
- language model
- language modeling
- document retrieval
- n gram
- speech recognition
- probabilistic model
- query expansion
- statistical language models
- language modelling
- test collection
- retrieval model
- information retrieval
- vector space model
- smoothing methods
- context sensitive
- ad hoc information retrieval
- relevance model
- document length
- word error rate
- query terms
- information retrieval systems
- language model for information retrieval