component model; uncertainty; fuzzy, criteria priority; customer; expert system; linguistic variable; knowledge base; problem domain

This paper proposes methodology for creating a component model of information system with presence of uncertainty in an information system modeling process. The proposed methodology allows to assign priority to the vague modeling criteria. The paper methodology describes the process of identifying and processing requirements of the customer and proposes appropriate components and subcomponent for future IS. The article also describes an expert system that is used to evaluate each sub-component and assigns them the level of the suitability that can be found in the resulting conceptual model. At the end of the article the proposed methodology is validated on the example of analysis and design of the selected type of information system.