Keyphrases
- language model
- language modeling
- n gram
- probabilistic model
- query expansion
- document retrieval
- information retrieval
- speech recognition
- retrieval model
- language modelling
- test collection
- context sensitive
- smoothing methods
- statistical language models
- pseudo relevance feedback
- ad hoc information retrieval
- language model for information retrieval
- word error rate
- okapi bm
- machine learning
- vector space model
- relevance model
- translation model