Keyphrases
- information retrieval
- probability ranking principle
- test collection
- vector space model
- learning to rank
- text mining
- information retrieval systems
- language model
- retrieval systems
- document retrieval
- retrieval model
- text retrieval
- search engine
- information seeking
- query expansion
- retrieval effectiveness
- database
- language processing
- neural network
- computational linguistics
- ir evaluation
- machine learning
- language modeling
- question answering
- image retrieval
- knowledge base
- artificial intelligence