Keyphrases
- information retrieval
- information retrieval systems
- learning to rank
- search engine
- information extraction
- information filtering
- text retrieval
- query expansion
- text mining
- language processing
- information access
- co occurrence
- latent semantic indexing
- test collection
- text processing
- question answering
- information seeking
- structured documents
- retrieval effectiveness
- relevant documents
- retrieval systems
- real world
- web search
- decision trees
- multimedia
- genetic algorithm
- machine learning