A flexible interactive control structure for rule-based systems

  • Authors:

  • S. Srinivasan;Pradip Dey;Yoichi Hayashi

  • Affiliations:

  • MTB Computer Consulting Corporation, 4151 Ashford Dunwoody Road, Suite 400, Atlanta, GA;Department of Computer and Information Sciences, University of Alabama at Birmingham, AL;Department of Information Science, Ibaraki University, Hitachi, Ibaraki 316, Japan

  • Venue:
  • CSC '88 Proceedings of the 1988 ACM sixteenth annual conference on Computer science
  • Year:
  • 1988

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Abstract

Flexibility in control mechanism will allow solutions of a much wider range of problems with the expert system technology than currently possible. In order to provide flexibility in control mechanism deviations from the standard fixed control (recognize-act cycle) should be allowed. As a first step toward achieving this we develop a flexible interactive backtracking strategy that can deviate significantly from the fixed control structure of rule-based systems. This paper describes a general purpose tool for developing expert systems called PRO2. PRO2 has an effective, intelligent and flexible backtracking control mechanism which makes the system more dependable and flexible. It has a reasonably efficient backtracking facility that is used when the user is not satisfied with the solution and requests for alternatives. Thus, the system provides a greater opportunity to find an acceptable solution if the user is not satisfied with the earlier solution provided. The system also provides an interactive conflict resolution facility.