Keyphrases
- information extraction
- natural language processing
- named entity recognition
- text mining
- precision and recall
- named entities
- machine learning
- years ago
- free text
- databases
- semi structured
- machine translation
- structured data
- information retrieval
- question answering
- web mining
- genetic algorithm
- text summarization
- experience gained
- ontology based information extraction
- web documents
- expert systems
- database systems
- case study
- social networks
- data sets
- open domain
- semantic tagging