Keyphrases
- information extraction
- natural language processing
- named entity recognition
- precision and recall
- free text
- semi structured
- question answering
- text mining
- information retrieval
- open domain
- named entities
- machine learning
- relation extraction
- conditional random fields
- text processing
- structured data
- text documents
- relational learning
- ontology based information extraction
- web documents
- machine translation
- web mining
- natural language
- textual data
- web services
- social networks
- artificial intelligence