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Project network analysis with fuzzy activity times. (English) Zbl 0648.90041
Summary: Triangular fuzzy numbers are used to represent project activities whose duration times are uncertain and cannot be represented stochastically. A comprehensive path analysis method is devised using fuzzy arithmetic and a fuzzy number comparison method to determine fuzzy project completion time and the degrees of criticality of each network path. Possibility theory is then used to determine the possibilities of the project completion given the fuzzy project completion time. The existing composite method and the new comprehensive comparison method are compared and contrasted.

MSC:
90B35 Deterministic scheduling theory in operations research
03E72 Theory of fuzzy sets, etc.
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