Keyphrases
- natural language processing
- information retrieval
- computational linguistics
- information extraction
- text mining
- language processing
- text processing
- question answering
- tasks in natural language processing
- search engine
- machine learning
- linguistic analysis
- natural language
- information retrieval systems
- ontology learning
- named entity recognition
- word sense disambiguation
- artificial intelligence
- text summarization
- computational biology
- relevance feedback
- wordnet
- information access
- test collection
- knowledge representation
- ir evaluation
- query expansion
- latent semantic indexing
- semantic analysis
- retrieval systems
- free text
- learning to rank
- machine translation
- vector space model
- named entities
- multimedia
- knowledge base
- document collections
- semantic relations
- co occurrence