Keyphrases
- information retrieval
- information retrieval systems
- text mining
- search engine
- test collection
- document collections
- query expansion
- computer vision
- computational linguistics
- question answering
- data sets
- information extraction
- web search
- evolutionary algorithm
- artificial neural networks
- database systems
- text retrieval
- language modeling
- information filtering
- language processing
- clustering algorithm
- automatic indexing
- information retrieval evaluation