Keyphrases
- information retrieval
- ontology learning
- information retrieval systems
- semantic web
- knowledge base
- ontology engineering
- search engine
- ontology integration
- databases
- information access
- document collections
- knowledge representation
- query expansion
- domain specific
- text mining
- semantic web technologies
- learning to rank
- document retrieval
- domain ontology
- conceptual models
- ontology matching
- test collection
- semantically rich
- question answering
- text retrieval
- relevant documents
- information seeking
- retrieval systems
- semantic search
- ontology mapping
- co occurrence
- ontology alignment