Keyphrases
- web search
- language model
- language modeling
- n gram
- query expansion
- speech recognition
- retrieval model
- probabilistic model
- test collection
- information retrieval
- document retrieval
- language modelling
- statistical language models
- relevance model
- document ranking
- smoothing methods
- ad hoc information retrieval
- context sensitive
- pseudo relevance feedback
- translation model
- vector space model
- pseudo feedback
- language models for information retrieval