Commerce Web-Portal Redesigning Based on Usability Evaluation

Abstract

Redesigning of the whole portal or some of its webpages does not always lead to a positive result despite the designers' expectations. Nowadays the opinion on how to carry out the redesign of web portals varies. A web portal being in service and in a wide use, a sudden change in its design may result in a drop of the number of clients. The usability evaluation has become important to make a decision on what design of webpages to choose. The paper proposes a method to redesign of commercial web-portals which is based on usability evaluation of some webpages. The evaluation can be undertaken by surveying the staff of the business organization where such a web portal is being developed. The hierarchy made of the Choquet integrals aggregates the results of the questionnaire and allows for the interdependencies between individual metrics of usability. Then, a decision about the redesign of a certain webpage is made on the basis of the aggregated results. The described experiment has shown a great impact of this innovative approach.