An Approach to Estimate Perplexity Values for Language Models Based on Phrase Classes.
Raquel JustoM. Inés TorresPublished in: IbPRIA (2009)
Keyphrases
- language model
- language modeling
- probabilistic model
- information retrieval
- document level
- n gram
- document retrieval
- speech recognition
- multiword
- language modelling
- query expansion
- retrieval model
- test collection
- smoothing methods
- word error rate
- context sensitive
- language model for information retrieval
- relevance model
- query terms
- passage retrieval
- statistical machine translation
- document ranking
- vector space model
- statistical language models
- term proximity
- pseudo relevance feedback