A computer program that belongs to the class known among software experts as output truth-maintenance systems (output TMSs) has been devised as one of a number of software tools for reducing the size of the knowledge base that must be searched during execution of artificial-intelligence software of the rule-based inference engine type in a case in which data are missing. This program determines whether the consequences of activation of two or more rules can be combined without causing a logical inconsistency. For example, in a case involving hypothetical scenarios that could lead to turning a given device on or off, the program determines whether a scenario involving a given combination of rules could lead to turning the device both on and off at the same time, in which case that combination of rules would not be included in the scenario.
This program was written by Mark James of Caltech for NASA's Jet Propulsion Laboratory. For further information, access the Technical Support Package (TSP) free on-line at www.techbriefs.com/tsp under the Software category.
This software is available for commercial licensing. Please contact Karina Edmonds of the California Institute of Technology at (626) 395-2322. Refer to NPO-42710.
This Brief includes a Technical Support Package (TSP).
TMS for Instantiating a Knowledge Base With Incomplete Data
(reference NPO-42710) is currently available for download from the TSP library.
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Overview
The document is a Technical Support Package from NASA's Jet Propulsion Laboratory (JPL), specifically focused on a software application identified by NTR Number 42710. The title of the application is "Generation of Consistent and Plausible Knowledge Base Instantiations in the Presence of Missing Data." This software aims to address the challenges associated with incomplete data when instantiating knowledge bases, which are essential for various technological, scientific, and commercial applications.
The Technical Support Package is part of NASA's Commercial Technology Program, which seeks to disseminate the results of aerospace-related developments that have broader implications beyond their initial context. The document emphasizes the importance of creating reliable knowledge bases, particularly in scenarios where data may be incomplete or missing. This capability is crucial for enhancing decision-making processes in various fields, including aerospace, engineering, and artificial intelligence.
The document also provides contact information for further assistance, directing inquiries to the Innovative Technology Assets Management team at JPL. This team can provide additional insights into research and technology related to the software application and its potential applications.
Furthermore, the document includes a notice regarding the liability and rights associated with the information contained within it. It clarifies that the United States Government and its representatives do not assume liability for the use of the information and that any mention of trade names or manufacturers is for identification purposes only, without implying official endorsement.
Overall, this Technical Support Package serves as a resource for understanding the capabilities and applications of the TMS software in generating knowledge bases despite the challenges posed by incomplete data. It highlights NASA's commitment to advancing technology and fostering innovation that can benefit a wide range of industries and research areas.
