Keyphrases
- mixture model
- expert finding
- language modeling
- language model
- web mining
- em algorithm
- probabilistic model
- gaussian mixture model
- information management
- density estimation
- generative model
- expectation maximization
- model selection
- maximum likelihood
- unsupervised learning
- query expansion
- mixture modeling
- topic modeling
- n gram
- document retrieval
- social network analysis
- learning algorithm
- probabilistic mixture model