Keyphrases
- language model
- language modeling
- retrieval model
- probabilistic model
- document retrieval
- n gram
- query expansion
- information retrieval
- test collection
- speech recognition
- context sensitive
- language modelling
- pseudo relevance feedback
- translation model
- smoothing methods
- vector space model
- language model for information retrieval
- query terms
- statistical language models
- ad hoc information retrieval
- relevance model
- document ranking
- okapi bm
- machine learning
- feature selection
- search engine
- document length