Declarative Information Extraction Using Datalog with Embedded Extraction Predicates.
Warren ShenAnHai DoanJeffrey F. NaughtonRaghu RamakrishnanPublished in: VLDB (2007)
Keyphrases
- information extraction
- datalog programs
- predicate invention
- free text
- precision and recall
- structured data
- natural language processing
- deductive databases
- expressive power
- named entity recognition
- semi structured
- named entities
- information retrieval
- web information extraction
- query answering
- logic programming
- text mining
- query language
- relation extraction
- web documents
- conditional random fields
- text documents
- declarative language
- embedded systems
- question answering
- textual data
- high level
- relational learning
- databases
- entity extraction
- data extraction
- inductive logic programming
- web mining
- transitive closure
- natural language
- data complexity
- knowledge representation
- information extraction systems
- ontology based information extraction