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