Accession Number : AD0654926

Title :   AN INTERACTIVE SYSTEM FOR COMPUTING DEPENDENCIES, PHRASE STRUCTURES AND KERNELS.

Descriptive Note : Professional paper,

Corporate Author : SYSTEM DEVELOPMENT CORP SANTA MONICA CALIF

Personal Author(s) : Burger,John F. ; Long,Robert E. ; Simmons,Robert F.

Report Date : 29 JUN 1967

Pagination or Media Count : 32

Abstract : Growing out of a need for the deep syntactic analysis of questions and possible answers in the Protosynthex approach to question answering, an automatic syntactic analysis system that is programmed in LISP is described. This is an interactive system that derives a grammar from hand-parsed sentences. It produces first a dependency analysis, which is then used as a basis for constructing an immediate-constituent surface phrase-structure tree. The resulting surface structure offers cues that allow the system to derive a kernel string for each presumed deep structure sentence that has been embedded in the surface structure. Interactive features include the capability for users to change the grammar, to select one of several presented parsings, to correct errors in the parsing, and to select various displays either on a CRT or in printed form. (Author)

Descriptors :   (*GRAMMARS, *SYNTAX), (*INFORMATION RETRIEVAL, SCIENTIFIC RESEARCH), ALGORITHMS, ENGLISH LANGUAGE, LINGUISTICS

Subject Categories : Information Science
      Linguistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE