Keyphrases
- probabilistic model
- information retrieval
- graphical models
- language model
- generative model
- ir models
- expectation maximization
- latent variables
- conditional random fields
- information retrieval systems
- query expansion
- bayesian inference
- mixture model
- text retrieval
- bayesian networks
- computer science
- retrieval effectiveness
- probabilistic retrieval models
- retrieval model
- digital libraries
- case study
- search engine
- learning algorithm
- tf idf
- evaluation framework
- probabilistic modeling
- databases
- database