Discriminative probabilistic models for passage based retrieval.
Mengqiu WangLuo SiPublished in: SIGIR (2008)
Keyphrases
- probabilistic model
- document retrieval
- language model
- graphical models
- information retrieval
- discriminative models
- image database
- question answering
- passage retrieval
- generative model
- retrieval systems
- test collection
- bayesian inference
- multimedia databases
- retrieval model
- query expansion
- expectation maximization
- conditional random fields
- information retrieval systems
- latent variables
- feature extraction
- document collections
- relevance feedback
- image retrieval
- language modeling
- retrieval accuracy
- efficient retrieval
- document level
- feature selection
- probabilistic modeling
- crf model
- discriminative features
- discriminative power
- bayesian networks
- topic models