Keyphrases
- language model
- language modeling
- probabilistic model
- n gram
- information retrieval
- language modelling
- speech recognition
- document retrieval
- retrieval model
- unsupervised learning
- mixture model
- statistical language models
- test collection
- query expansion
- query terms
- smoothing methods
- ad hoc information retrieval
- language models for information retrieval
- translation model
- vector space model
- context sensitive
- relevance model
- document ranking
- supervised learning
- retrieval effectiveness
- error rate
- search engine