Keyphrases
- comparative analysis
- language model
- language modeling
- probabilistic model
- document retrieval
- n gram
- information retrieval
- statistical language models
- language modelling
- retrieval model
- query expansion
- ad hoc information retrieval
- speech recognition
- context sensitive
- test collection
- smoothing methods
- language models for information retrieval
- semi quantitative
- machine learning
- vector space model
- pseudo relevance feedback
- passage retrieval
- retrieval effectiveness
- query terms
- relevance model
- data fusion
- word error rate
- hidden markov models