Keyphrases
- language model
- language modeling
- document retrieval
- speech recognition
- n gram
- probabilistic model
- query expansion
- retrieval model
- test collection
- information retrieval
- mixture model
- statistical language models
- context sensitive
- language modelling
- cross language
- smoothing methods
- ad hoc information retrieval
- query terms
- document ranking
- machine learning
- pseudo relevance feedback
- language model for information retrieval
- expectation maximization
- natural language processing
- search engine
- vector space model