Paper: Integrating Top-Down And Bottom-Up Strategies In A Text Processing System

ACL ID A88-1018
Title Integrating Top-Down And Bottom-Up Strategies In A Text Processing System
Venue Applied Natural Language Processing Conference
Session Main Conference
Year 1988
Authors

The SCISOR. system is a computer program designed to scan naturally occurring texts in constrained do- mains, extract information, and answer questions about that information. The system currently reads newspapers stories in the domain of corporate merg- ers and acquisitions. The language analysis strategy used by SCISOR combines full syntactic (bottom- up) parsing and conceptual expectation-driven (top- down) parsing. Four knowledge sources, includ- ing syntactic and semantic information and domain knowledge, interact in a flexible manner. This in- tegration produces a more robust semantic analyzer designed to deal gracefully with gaps in ]exical and syntactic knowledge, transports easily to new do- mains, and facilitates the extraction of information from texts.