Evaluating Topic Difficulties from the Viewpoint of Query Term Expansion.
Masaharu YoshiokaPublished in: AIRS (2006)
Keyphrases
- viewpoint
- query terms
- query topic
- retrieval effectiveness
- co occurrence
- user queries
- cross language information retrieval
- verbose queries
- language model
- information retrieval systems
- document retrieval
- query expansion
- query translation
- retrieval model
- information retrieval
- document collections
- query logs
- expert finding
- topic models
- search queries
- term frequency
- short queries
- relevance ranking
- out of vocabulary
- machine translation