Fuzzy regression control chart based on α-cut approximation

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International Journal of Computational Intelligence Systems, vol.3, no.1, pp.123-140, 2010 (SCI-Expanded) identifier


The fuzzy regression control chart is a functional technique to evaluate the process in which the average has a trend and the data represents a linguistic or approximate value. In this study, the theoretical structure of the "α-level fuzzy midrange for α-cut fuzzy -regression control chart" is proposed for triangular (TFN) and trapezoidal (TrFN) membership functions. In addition, the real world application is evaluated with fuzzy regression control charts and fuzzy control charts for the triangular membership function.