Keyphrases
- language model
- document representation
- language modeling
- probabilistic model
- document retrieval
- n gram
- information retrieval
- multi modal
- retrieval model
- language modelling
- query expansion
- ad hoc information retrieval
- speech recognition
- query terms
- mixture model
- smoothing methods
- test collection
- named entity recognition
- query specific
- context sensitive
- vector space model
- word error rate
- document ranking
- machine learning
- named entities
- statistical language models
- pseudo feedback
- natural language processing
- translation model
- pseudo relevance feedback
- model selection
- retrieval effectiveness