Keyphrases
- language model
- generation method
- document ranking
- smoothing methods
- ad hoc information retrieval
- language modeling
- document retrieval
- query specific
- information retrieval
- document length
- n gram
- query expansion
- ranking functions
- speech recognition
- probabilistic model
- pseudo feedback
- learning to rank
- retrieval model
- relevance model
- inter document similarities
- ranking algorithm
- test collection
- language modelling
- language models for information retrieval
- context sensitive
- statistical language models
- document level
- ranked list
- vector space model
- okapi bm
- web search
- language model for information retrieval
- retrieved documents
- text retrieval
- query terms
- information retrieval systems
- web pages