Keyphrases
- mathematical foundations
- information retrieval
- information retrieval systems
- question answering
- text mining
- information filtering
- document collections
- learning to rank
- computational linguistics
- information access
- multiscale
- document retrieval
- machine learning
- language processing
- vector space model
- test collection
- query expansion
- relevance feedback
- information extraction
- text retrieval
- retrieval effectiveness
- language modeling
- neural network
- language model
- case study