Keyphrases
- text retrieval
- risk sensitive
- optimal control
- utility function
- markov decision processes
- model free
- information retrieval
- document collections
- image retrieval
- retrieval systems
- retrieval model
- optimality criterion
- control policies
- document retrieval
- information retrieval systems
- dynamic programming
- query expansion
- decision makers
- markov decision problems
- efficient optimization
- test collection
- decision theoretic
- retrieval quality
- decision making
- feature selection