Competence as a support factor of the computer system operation

In this paper the issue of the computer systems users' competence analysis as one of its failing causes was considered. For this purpose the competence model for the analysis of witch it is necessary to carry out the diagnostic experiments, where the qualifying tasks will be open form tasks with a detailed answer, was proposed. In order to evaluate these tasks the mathematical apparatus of fuzzy logic was proposed to use. In this paper a justification of the operating fuzzy inference algorithm was given, and the model of condition-action rules composition was proposed.