Accession Number : ADA294035

Title :   Structural Domain Modeling for Understanding Equipment Failure Messages.

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Wauchope, Kenneth

PDF Url : ADA294035

Report Date : 12 MAY 1995

Pagination or Media Count : 5

Abstract : The goal of natural language understanding computer systems is to analyze and make use of the information contained in English or other natural language discourse. Understanding texts that discuss complex pieces of equipment such as Navy equipment failure reports (CASREPs), requires the possession not only of general knowledge about the types of objects and predicates in the domain, but also detailed knowledge about the particular equipment in question. This more expert level of knowledge is needed to deference the names and descriptions of equipment referred to in the text, and to infer their causal relations and operational states when these are only implicitly expressed by the message writer. Knowing the structural configuration of the equipment is useful in both tasks, and a structural domain model can be extracted readily from equipment manuals and their accompanying parts lists, thus easing the "knowledge acquisition bottleneck" problem and making practical applications more feasible.

Descriptors :   *FAILURE, *NATURAL LANGUAGE, *COMPREHENSION, MODELS, COMPUTERS, STRUCTURAL PROPERTIES, CONFIGURATIONS, NAVAL EQUIPMENT, MANUALS.

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE