Keyphrases
- language model
- language modeling
- n gram
- document retrieval
- information retrieval
- speech recognition
- query expansion
- probabilistic model
- ad hoc information retrieval
- retrieval model
- mixture model
- language modelling
- word error rate
- query terms
- vector space model
- smoothing methods
- machine learning
- test collection
- language model for information retrieval
- statistical language models
- pseudo relevance feedback
- natural language processing
- translation model
- relevance model
- dirichlet prior
- evaluation metrics