Accession Number : ADP001172

Title :   Handling Ill-Formed Input: Session Introduction,

Corporate Author : DELAWARE UNIV NEWARK DEPT OF COMPUTER AND INFORMATION SCIENCES

Personal Author(s) : Weischedel,Ralph M.

Report Date : 01 FEB 1983

Pagination or Media Count : 4

Abstract : This session consists of papers by Jensen and Heidorn; Marsh; and Granger et al. The paper by Jensen and Heidorn presents a particular heuristic for dealing with unparsable input. Since they have separate explicit heuristics for specific ungrammatical forms, a significant proportion of unparsable input in their system will be relatively ill-formed. Marsh's paper describes a technique for filling in material omitted from fragmentary inputs. Both syntactic information and domain-specific constraints on semantic classes are used. The paper by Granger et al. reports on NOMAD, a system for taking cryptic, errorful naval ship-to-shore messages and generating well-formed versions. The paper describes the methods used for processing unknown words, fragments, missing punctuation, and tense errors.

Descriptors :   *Input output processing, *Computational linguistics, Symposia, Natural language, Heuristic methods, Parsers, Errors, Semantics, Syntax, Data bases, Text processing, Cryptography, Message processing, Input

Distribution Statement : APPROVED FOR PUBLIC RELEASE