Keyphrases
- test collection
- web retrieval
- patent retrieval
- evaluation metrics
- cross language information retrieval
- cross lingual information retrieval
- english chinese
- relevant documents
- information retrieval
- evaluation framework
- data sets
- ir evaluation
- document collections
- retrieval effectiveness
- trec web
- average precision
- digital libraries
- similarity measure
- search engine
- databases
- language model
- expert systems
- search tasks
- case study
- metadata
- machine learning
- graded relevance