Keyphrases
- passage retrieval
- language model
- document retrieval
- language modeling
- retrieval model
- information retrieval
- n gram
- probabilistic model
- speech recognition
- query expansion
- language modelling
- test collection
- relevance model
- sentence retrieval
- question answering
- document representation
- pseudo relevance feedback
- document ranking
- document structure
- query terms
- vector space model
- okapi bm
- smoothing methods
- retrieval effectiveness
- text retrieval