Accession Number : AD0713431

Title :   AN ALGORITHM FOR THE SYNTACTIC ANALYSIS IN THE R2 INFORMATION SYSTEM,

Corporate Author : ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Personal Author(s) : Schultz,Jeffrey A. ; Bielby,William T.

Report Date : OCT 1970

Pagination or Media Count : 44

Abstract : The paper presents a pure syntax parsing algorithm for the R2 question answering system. The parsing is a necessary part in the processing of information for the retrieval of answers by giving the syntactic structure of both questions and statements of fact. The syntactic analysis is performed on individual statements by using grammatical rules and various grammatical transformation. The parser has been implemented in LISP 1.5 on an IBM 360/75 computer. Experimental results from the system include examples of the analysis of some compound and a complex sentences, as well as simple sentences. (Author)

Descriptors :   (*INFORMATION RETRIEVAL, *SYNTAX), ANALYSIS, COMPUTER PROGRAMMING, ALGORITHMS, TRANSFORMATIONAL GRAMMARS, PHRASE STRUCTURE GRAMMARS

Subject Categories : Information Science
      Linguistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE