Keyphrases
- language model
- n gram
- smoothing methods
- statistical language modeling
- language modeling
- language models for information retrieval
- probabilistic model
- document retrieval
- information retrieval
- query expansion
- language modeling approaches
- speech recognition
- dirichlet prior
- language modelling
- retrieval model
- ad hoc information retrieval
- language modeling framework
- document length
- test collection
- context sensitive
- query terms
- pseudo relevance feedback
- language independent
- statistical language models
- relevance model
- passage retrieval
- word segmentation
- machine learning