Topic-based language models using Dirichlet Mixtures.
Kugatsu SadamitsuTakuya MishinaMikio YamamotoPublished in: Systems and Computers in Japan (2007)
Keyphrases
- language model
- mixture model
- language modeling
- dirichlet prior
- probabilistic model
- document level
- n gram
- document retrieval
- language modelling
- speech recognition
- information retrieval
- query expansion
- retrieval model
- test collection
- expert finding
- topic models
- statistical language models
- language models for information retrieval
- dirichlet distribution
- query terms
- expectation maximization
- vector space model
- pseudo relevance feedback
- ad hoc information retrieval
- language model for information retrieval
- translation model
- context sensitive
- em algorithm
- document ranking
- relevance model
- smoothing methods
- cross lingual
- document length
- latent dirichlet allocation
- information extraction
- bayesian networks