Abstract
LISREL (Linear Structural Relations) Model expresses a relevance within potential structure as a linear relation which implicitly exists in the analyzed world, and the model is one of excellent methods to analyze a complicated factorial structure. However, when the structure has a complex characteristics in which factors relate each other, it is not so easy to make clear the relevance in the structure, because of the ambiguous system structure. In this paper, the concept of fuzzy possibilistic linear regression is introduced to identify the structural relevance by assigning fuzzy number to regression coefficient. We propose a new method which express the fuzzy structure relying on the system coefficient. Finally we apply LISREL model with fuzzy possibilistic linear regression to a structural analysis of Quality Circle activity which is a kind of psychological event.
