Keyphrases
- information extraction
- precision and recall
- logic programming
- expert systems
- natural language processing
- named entity recognition
- question answering
- text mining
- programming language
- open domain
- machine learning
- relation extraction
- relational learning
- knowledge representation
- web documents
- abstract machine
- information retrieval
- named entities
- free text
- semi structured
- conditional random fields
- knowledge base
- ontology based information extraction
- machine translation
- text documents
- structured data
- constraint logic programming
- unstructured text
- web mining
- natural language text
- semantic tagging
- extracting meaningful
- case study
- textual data
- text processing
- logic programming language
- metadata
- information extraction systems
- explanation based generalization
- inference engine
- word sense disambiguation
- data mining