Keyphrases
- information extraction
- natural language processing
- natural language
- text mining
- semi structured
- machine learning
- free text
- structured data
- web mining
- information retrieval
- named entity recognition
- precision and recall
- grammatical inference
- question answering
- text processing
- web documents
- machine translation
- textual data
- relation extraction
- context free grammars
- text documents
- ontology based information extraction
- semantic tagging
- visual languages
- syntactic pattern recognition
- open domain
- search engine
- natural language text
- word sense disambiguation
- named entities
- data analysis
- tree grammars
- mildly context sensitive