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Discrete event simulation tool for analysis of qualitative models of continuous processing systemsAn artificial intelligence design and qualitative modeling tool is disclosed for creating computer models and simulating continuous activities, functions, and/or behavior using developed discrete event techniques. Conveniently, the tool is organized in four modules: library design module, model construction module, simulation module, and experimentation and analysis. The library design module supports the building of library knowledge including component classes and elements pertinent to a particular domain of continuous activities, functions, and behavior being modeled. The continuous behavior is defined discretely with respect to invocation statements, effect statements, and time delays. The functionality of the components is defined in terms of variable cluster instances, independent processes, and modes, further defined in terms of mode transition processes and mode dependent processes. Model construction utilizes the hierarchy of libraries and connects them with appropriate relations. The simulation executes a specialized initialization routine and executes events in a manner that includes selective inherency of characteristics through a time and event schema until the event queue in the simulator is emptied. The experimentation and analysis module supports analysis through the generation of appropriate log files and graphics developments and includes the ability of log file comparisons.
Document ID
19910005428
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Malin, Jane T.
(Mitre Corp. Washington, DC., United States)
Basham, Bryan D.
(Mitre Corp. Washington, DC., United States)
Harris, Richard A.
(Mitre Corp. McLean, VA., United States)
Date Acquired
August 14, 2013
Publication Date
October 23, 1990
Subject Category
Computer Programming And Software
Accession Number
91N14741
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-MSC-21465-1|US-PATENT-4,965,743
Patent Application
US-PATENT-APPL-SN-219295
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