Rule base verification using Petri nets

Stephen J.H. Yang, Alex S. Lee, William C. Chu, Hongji Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We propose a Petri net formalism for the verification of rule based systems. Typical structural errors in a rule based system are redundancy, inconsistency, incompleteness, and circularity. Since our verification is based on Petri nets and their incidence matrix, we need to transform rules into a Petri net first, then derive an incidence matrix from the net. In order to allow a rule based system to be immune from the above described structural errors, we have observed that for all columns in the matrix, all positive entries must be above all negative entries; and for all rows in the matrix, all positive entries must be to the right of all negative entries. If this is not the case, the rule based system may commit errors. Based on this concept, we have developed a tool consisting of the following four phases: rule normalization, rule ordering, rule-to-Petri-net transformation, and rule verification. In phase one, we normalize the rules into Horn clauses. We rearrange the ordering of these normalized rules in phase two, then transform the reordered rules into a Petri net and its corresponding incidence matrix in phase three. In phase four, we perform the rule verification based on the incidence matrix.

Original languageEnglish
Title of host publicationProceedings - 22nd Annual International Computer Software and Applications Conference, Compsac 1998
PublisherIEEE Computer Society
Pages476-481
Number of pages6
ISBN (Electronic)0818685859
DOIs
StatePublished - 1998
Event22nd Annual International Computer Software and Applications Conference, Compsac 1998 - Vienna, Austria
Duration: 19 Aug 199821 Aug 1998

Publication series

NameProceedings - International Computer Software and Applications Conference
ISSN (Print)0730-3157

Conference

Conference22nd Annual International Computer Software and Applications Conference, Compsac 1998
Country/TerritoryAustria
CityVienna
Period19/08/9821/08/98

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