Knowledge-based reactive scheduling |
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Authors: | ELIZABETH SZELKE ROGER M KERR |
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Institution: | Computer and Automation Research Institute of the Hungarian Academy of Sciences , 1111 Budapest, Kende u 13-17, Budapest 112, P.O. Box 63, H-1518 Hungary. |
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Abstract: | Reactive scheduling has emerged as a new concept in production planning and control over the past few years. It is attracting the increased interest of both academic and industrial researchers in developing available knowledge-based techniques in real-time shop floor control applications and providing advanced tools for subsequent industrial applications. In this paper, we provide an overview of research results in the domain of knowledge-based reactive scheduling and some related industrial applications. Since reactive scheduling is a new and not well-defined paradigm, we start by examining some definitions of the problem given by different practitioners in the field. We then examine alternative knowledge-representation technologies and reasoning approaches which, because of t heir flexibility and reactive capability, are often applied in real-time decision-making environments. This is followed by a review of some reported industrial applications, and a summary on major areas for further research, which gives a picture of the width of the gap between the results of current research and their application in practice. Finally, some major trends apparent in the domain are outlined. |
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Keywords: | knowledge-based systems reactive scheduling handling uncertainties shop floor control real-time decision-making |
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