Keyphrases
- ranking scheme
- learning to rank
- document ranking
- information retrieval
- ranking functions
- ranking algorithm
- document retrieval
- user feedback
- retrieval systems
- indexing scheme
- keyphrase extraction
- search engine
- retrieved documents
- query expansion
- document collections
- web search
- probability estimation
- ranking models
- document clusters
- short list
- tf idf
- ranked list
- document clustering
- document images
- keywords
- web documents
- maximal marginal relevance
- retrieval strategies
- user queries
- query dependent
- information retrieval systems
- relevant documents
- effective retrieval
- ranking list
- retrieval quality
- single document summarization
- information extraction
- query specific
- document representation
- probability estimates
- document set