Probabilistic models for topic detection and tracking.
Frederick WallsHubert JinSreenivasa SistaRichard M. SchwartzPublished in: ICASSP (1999)
Keyphrases
- topic detection and tracking
- probabilistic model
- relevance model
- story link detection
- news stories
- language model
- graphical models
- generative model
- topic detection
- expectation maximization
- vector space model
- document representation
- bayesian networks
- dependency structure
- conditional random fields
- hidden variables
- topic models
- semantic roles
- language modeling
- meta search
- em algorithm
- tf idf
- information retrieval
- digital libraries
- search engine