Keyphrases
- information retrieval
- information retrieval systems
- question answering
- test collection
- search engine
- information filtering
- learning to rank
- knowledge discovery
- text mining
- document retrieval
- query expansion
- automatic indexing
- real time
- text retrieval
- retrieval systems
- document collections
- neural network
- relevant documents
- language model
- query terms
- data structure
- image sequences
- language modeling
- vector space model
- information systems
- tf idf
- computational linguistics