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Computación y Sistemas

Print version ISSN 1405-5546

Abstract

ORTEGA, J. A. et al. Semiqualitative Methodology to Reasoning about Dynamic Systems. Comp. y Sist. [online]. 2005, vol.8, n.3, pp.231-251. ISSN 1405-5546.

In this article a methodology to reason over semiqualitative models built for dinamic systems with qualitative and quantitative knowledge is proposed. The qualitative information of these systems can be composed of: qualitative operators, qualitative labels, bands functions and qualitative continuous functions. A formalism to incorporate this information to the models is presented. The proposed methodology allows to study not just about the stationary regime, widely studied in the literature, but also it makes possible to carry out a study of the transitory regime of the systems. It also presents a theoretical study about the validity of the conclusions obtained in the methodology. The behaviours of the system can be obtained automatically applying clustering algorithms and are expressed through a set of hierarchical rules obtained from genetics algorithms. The methodology has been applied to a couple of models, one of them is the interconnected pools model and the other a logistical growing model where a delay in the feedback curls has been incorporated.

Keywords : Semiqualitative models; Knowledge representation; Qualitative reasoning.

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