새로운 웹 사용성 평가 방법 제안: 증차 분석법과 퍼지 개념의 도입과 통합

Abstract

The WWW(World Wide Web) started as a tool for the information exchange among professionals. It now becomes a necessity which is indispensable to everyday life for everyone with the expanded network of Internet. Recently, a invention such as new communication mobile, which is capable of Internet data transfer, makes it beyond expectation to predict the limit of the Web. The web usability gets more attention in the environment. A web usability evaluation methodology is proposed to improve and complement a conventional web usability methodology. The newly introduced methodologies, Analytic Hierarchy Process and Fuzzy Concept, identify the factors, which affect a web usability, and contribute the improved usability. The Analytic Hierarchy Process mimics the multi-level human information process and reflects human evaluation process. It can check the completion rate of a Information Architecture which is necessary to construct a web site. It also provides a priority index among web design factors increasing web usability. The fuzzy concept gives a way to integrate an quantitative value and a non-quantitative value, which is a language-type scale ranking here, and produces a single comprehensive value. The two methodologies are combined and applied for the case study of Seoul Metropolitan web site. A multi-level evaluation model, which starts with the definition of usability defined by ISO 9241, is given and the evaluation is done based on the model and the two methodologies. The result explicitly identifies factors which affects the web usability and needs an improvement. It definitely proves that the methodologies can provide ways to complement a conventional web usability methodology.