Keyphrases
- information retrieval
- search engine
- information extraction
- text mining
- vector space model
- language model
- machine learning
- website
- information retrieval systems
- test collection
- question answering
- computational linguistics
- retrieval model
- retrieval systems
- web search
- relevant documents
- document retrieval
- data sets
- learning to rank
- information access
- information systems
- story generation