Keyphrases
- information retrieval
- probability ranking principle
- information retrieval systems
- quantum probability
- search engine
- text mining
- information access
- databases
- machine learning
- information retrieval evaluation
- information extraction
- test collection
- query expansion
- quantum mechanics
- learning to rank
- question answering
- relevance feedback
- neural network
- document collections
- language model
- co occurrence
- text retrieval
- retrieval effectiveness
- web search
- tf idf
- text processing
- knowledge discovery
- xml documents
- quantum computation
- data mining