Keyphrases
- information retrieval
- semantic search
- linguistic analysis
- spreading activation
- information retrieval systems
- search engine
- query expansion
- semantic similarity
- vector space model
- information extraction
- semantic web
- semantic information
- test collection
- semantic features
- semantic network
- vector space
- language model
- natural language
- similarity measure
- high level
- retrieval systems
- machine learning
- learning to rank
- document collections
- knowledge discovery
- watermarking algorithm
- latent semantic indexing
- semantic knowledge
- knowledge base
- ontology based semantic
- measuring semantic similarity