DECISION-MAKING METHOD FOR TYPICAL PROCESSES MODELS FORMATION FOR CLOUD-BASED ENTERPRISE SYSTEMS

Abstract

The article is devoted to solving the problem of creating a decision-making method in the formation of typical enterprise processes in information systems based on cloud technologies, also known as systems operating on the SaaS model (Software as a Service). The study's relevance is due to the novelty of cloud computing technology and the impossibility of applying the methods developed for on-Premise class systems. The study aims to improve the efficiency of using typical enterprise models in the implementation and use of SaaS systems. Increased efficiency affects the time and budget of the SaaS implementation project and operational costs after implementation. Achievement of the research goal is achieved by performing the following tasks: an analytical review of the research area for available methods, formalization and canonical formulation of the research task, description of the elements of project documentation as a single system of elements, and determination of relationships between them, development of a method for making decisions on the formation of models of typical processes, as structural elements of the system, verification of the method by determining the criterion for the effectiveness of the method and its comparison with the data of previous approaches. The research task is formalized as a canonical optimization problem with an objective function to maximize the efficiency criterion. The criterion of efficiency is given in the form of a formula that describes the degree of coverage of functional requirements to the target processes of the enterprise by standard models. The article describes the methods and algorithms used to solve similar problems, as well as their disadvantages and limitations. The proposed method is based for the first time on the theory of fuzzy sets and uses the Mamdani fuzzy inference algorithm to link a set of functional requirements and a set of system implementations. On the basis of the method, a software application was developed, and a computational experiment was carried out. The sample for testing the method and its comparison with existing analogs was formed on the basis of functional requirements for organizational processes of procurement management of large enterprises and the implementation of these requirements in SaaS systems on the SAP platform. The growth of the value of the efficiency criterion was confirmed in the case of the application of the proposed method, which demonstrates its advantage over the available alternative solutions already at the second iteration of use. As an example, a description of a typical process for creating a purchase requisition before and after applying the proposed method is presented.