INFLUENCING FACTOR MIXTURE RANGE ANALYSIS METHOD AND INFLUENCING FACTOR MIXTURE RANGE ANALYSIS DEVICE

摘要

The present invention enables, for each influencing factor, the stratification of mixture data in which different influencing factors are mixed in a fault analysis. A range setting unit 11 divides an area to be analyzed into meshes, and divides the area to be analyzed into group A and group B by taking the mesh as a minimum unit. An analysis unit 12 performs a Weibull analysis by means of an accumulated hazard method by using check data about facility X, which exists in the meshes of group A. A determination unit 13 determines whether group A is a mixture area or a single area by taking, as an index, the degree of divergence of a plot from a regression line, which is obtained by the Weibull analysis. A range enlargement unit 14 repeats a process of transitioning the meshes from group B to group A, while maintaining group A as a single area.