FUZZY MODELS OF WEB SERVICES SELECTION IN THE DEVELOPMENT OF SERVICE-ORIENTED INFORMATION SYSTEMS FOR SMALL AND MEDIUM ENTERPRISES
FUZZY MODELS OF WEB SERVICES SELECTION IN THE DEVELOPMENT OF SERVICE-ORIENTED INFORMATION SYSTEMS FOR SMALL AND MEDIUM ENTERPRISES

Summary/Abstract: Nowadays, small and middle enterprises (SME´s) competitiveness increasinglydepends on their ability to adapt successfully to a rapidly changing business environment.Because of this information system that provides integrated support for all business proccesesof an enterprise must be highly dynamic and flexible. Service-oriented architecture (SOA)considered as a set of interacting web services is able to ensure the information systemflexibility, reduce software development, maintenance and upgrades costs, and therebyincrease responsiveness of the system to changing business requirements. In service-orienteddesign web-services have a direct impact on the possibility of development, adaptation andmodernization of the information system. The paper discusses principles and methods forSOA design for SME´s considering the structure of business processes as a basis ofcoordinated service interactions. Taking into account the business requirements the problemof web services optimal selection for service-oriented information system is solved. Theproblem of web service selection is formulated as a problem of choice with fuzzy preferences.Fuzzy logic and expert methods are used for evaluation and selection of web services. Thedeveloped procedures allow the user to evaluate and select from a set of available services theservices with the required functionality and quality. The proposed fuzzy model and algorithmsof web services selection provide the effective decision-support mechanisms for constructionof SOA-based systems for small and middle enterprises.Тhe new approach helps SME’s tostrengthen competitiveness through developing the information systems with flexiblestructure that allows to consider all changes in business environment, and reduce the time-tomarket with the system.

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