Keyphrases
- language model
- test collection
- information retrieval
- language modeling
- relevance model
- document ranking
- okapi bm
- document retrieval
- speech recognition
- n gram
- language modelling
- probabilistic model
- retrieval model
- statistical language modeling
- statistical language models
- query expansion
- pseudo relevance feedback
- retrieved documents
- language modeling framework
- context sensitive
- document length
- query terms
- smoothing methods
- vector space model
- language model for information retrieval
- query specific
- retrieval effectiveness
- average precision
- relevance feedback
- relevance assessments
- term dependencies
- relevant documents
- improve retrieval effectiveness
- ad hoc information retrieval
- probabilistic retrieval models