Keyphrases
- information retrieval
- search engine
- information retrieval systems
- language modeling
- document collections
- information extraction
- text mining
- language model
- learning to rank
- information seeking
- retrieval systems
- test collection
- retrieval effectiveness
- query expansion
- information access
- vector space model
- information systems
- information filtering
- computer assisted instruction
- tf idf
- data sets
- retrieval model
- question answering
- co occurrence
- computer science
- case study
- metadata
- feature selection
- social networks
- genetic algorithm
- databases