Case study: Using rough set in assessing Web service quality

The service of website is becoming so important that people pay more attention to the quality of service than that of systems and information. And there are many instruments to assess the service quality of Websites (WebSQ) which include different items from 6 to 156. However, the managers usually only need key aspects when they give proposal to improve the WebSQ effectively and efficiently. Traditionally, people adopt mean and regression analysis to derive the important items. In this paper, attribution reduction of rough set is introduced. And a teaching-aided website of an art university in China was selected as the applied case. The case study shows that attribution reduction is not only a practical method that can be used in the analysis of importance-derived, but also has advantages of no need prior knowledge and higher effectiveness over traditional methods.