The computational algorithm, helpful in identifying the importance as well as the direction of cause-effect relations between various types of factors constituting elements of a formalized influence network, is presented and discussed in detail. Two descriptive measures, proposed by the authors to characterize the examined influences, i.e. the position s+ and the relation s, are typical for generalized DEMATEL methodology. In this paper it is recommended that their values could be evaluated on the basis of the available expert opinions with the application of a fuzzy multi-stage grading scale.

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