あいまい問題の評価と意志決定支援ツールの構築 : (その2) 評価構造の確定法と多面性問題

概要

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Conceptual designs and initial planning of systems which are extremely subjective to the decision maker's discretionary powers, require a methodology of overall decision making, to perform the balancing act in a multi-criteria objective situation. A method of breaking down the decision making process into different analytical models and their proper evaluation using the fuzzy theory was established in the first report. However, the model forces the perpetual threat of an inexperienced decision maker super imposing the same item more than once during the decision making process and thus degrading the actual purpose of the model. The same situation arises even when the decision maker fails to achieve the best trade-offs available in a particular situation. This paper tries to correlate the different items and establish the degree of agreement between the interacting factors, to find a process of regenerating the proper judgements through a repeated decision making process. The evaluation problem of an intercity transportation system is taken as an example to demonstrate the applicability of the present method.