Keyphrases
- information retrieval
- topic detection and tracking
- test collection
- news articles
- news stories
- clef ip
- question answering
- topic detection
- online news
- social media
- keywords
- pseudo relevance feedback
- expert search
- retrieval effectiveness
- news items
- blog opinion retrieval
- evaluation campaigns
- financial news
- biomedical information retrieval
- data sets
- hot topics
- patent retrieval
- relevance judgments
- user generated content
- text mining
- relevance feedback