Keyphrases
- recall precision
- information retrieval
- website
- world wide web
- information retrieval systems
- text retrieval
- directly optimize
- retrieval model
- ir evaluation
- real time
- scoring methods
- automatic indexing
- information resources
- substantially higher
- home page
- web information retrieval
- information access
- evaluation measures
- retrieval effectiveness
- document retrieval
- probabilistic model
- active learning
- data sets