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An expert system prototype for aiding in the development of software functional requirements for NASA Goddard's command management system: A case study and lessons learnedAt NASA Goddard, the role of the command management system (CMS) is to transform general requests for spacecraft opeerations into detailed operational plans to be uplinked to the spacecraft. The CMS is part of the NASA Data System which entails the downlink of science and engineering data from NASA near-earth satellites to the user, and the uplink of command and control data to the spacecraft. Presently, it takes one to three years, with meetings once or twice a week, to determine functional requirements for CMS software design. As an alternative approach to the present technique of developing CMS software functional requirements, an expert system prototype was developed to aid in this function. Specifically, the knowledge base was formulated through interactions with domain experts, and was then linked to an existing expert system application generator called 'Knowledge Engineering System (Version 1.3).' Knowledge base development focused on four major steps: (1) develop the problem-oriented attribute hierachy; (2) determine the knowledge management approach; (3) encode the knowledge base; and (4) validate, test, certify, and evaluate the knowledge base and the expert system prototype as a whole. Backcasting was accomplished for validating and testing the expert system prototype. Knowledge refinement, evaluation, and implementation procedures of the expert system prototype were then transacted.
Document ID
Document Type
Conference Paper
Liebowitz, Jay (George Washington Univ. Washington, DC, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1986
Publication Information
Publication: NASA, Goddard Space Flight Center, Proceedings of 1986 Conference on Artificial Intelligence Applications
Subject Category
Funding Number(s)
Distribution Limits
Work of the US Gov. Public Use Permitted.