Keyphrases
- language model
- natural language processing
- language modeling
- speech recognition
- n gram
- probabilistic model
- language modelling
- information retrieval
- relevance model
- document retrieval
- information extraction
- test collection
- machine learning
- query expansion
- statistical language models
- pseudo relevance feedback
- text mining
- smoothing methods
- vector space model
- language models for information retrieval
- named entity recognition
- context sensitive
- information retrieval systems
- semantic relations
- query terms
- translation model
- retrieval model
- document length
- knowledge representation
- natural language