NDLI: Parallel rule firing in production systems

Content Provider	IEEE Xplore Digital Library
Author	Ishida, T.
Copyright Year	1989
Abstract	To improve the performance of forward chaining production systems, a new parallel execution model in which multiple production rules are fired in parallel in each production cycle is proposed. Solutions for three major problems in parallel rule firing are provided. The first solution, interference analysis, detects cases where a parallel firing result is different from the result of any sequential firing. Based on a data dependency graph of production systems, general techniques applicable to both compile- and run-time interference analyses are proposed. The second solution, parallel firing algorithms, achieve the parallel firing on multiple processor architectures. An efficient selection algorithm is provided to select multiple rules to be fired in parallel by combining the compile- and run-time interference analysis techniques. The parallel programming environment, the third solution, provides language facilities to enable programmers to make full use of potential parallelism without considering the internal parallel mechanisms. A parallel firing simulator is also implemented to estimate the effectiveness of parallel firings of production system programs. The effectiveness of parallel rule firings on several production system applications is evaluated. Results show that the degree of concurrency can be increased by a factor of 2-9. The sources of parallelism are investigated based on the evaluation results.<>
Sponsorship	IEEE IEEE Comput. Soc. Tech. Committee on Data Eng IEEE Computer Society
Starting Page	11
Ending Page	17
Page Count	7
File Size	703398
File Format	PDF
ISSN	10414347
Volume Number	3
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Production systems Interference Runtime Expert systems Parallel processing Parallel algorithms Fires Diversity reception Programming profession Problem-solving
Content Type	Text
Resource Type	Article
Subject	Information Systems Computational Theory and Mathematics Computer Science Applications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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