The purpose of this study was to develop an interactive tool that enables identification of different types of users of an application based on clickstream data. A complex hierarchical clustering algorithm tool called Recursive Hierarchical Clustering (RHC) was used. RHC provides a visualisation of user types as clusters, where each cluster has its own distinguishing action pattern, i.e., one or several consecutive actions made by the user in the application. A case study was conducted on the mobile application Plick, which is an application for selling and buying second hand clothes. During the course of the project, the analysis and its result was discovered to be difficult to understand by the operators of the tool. The interactive tool had to be extended to visualise the complex analysis and its result in an intuitive way. A literature study of how humans interpret information, and how to present it to operators, was conducted and led to a redesign of the tool. More information was added to each cluster to enable further understanding of the clustering results. A clustering reconfiguration option was also created where operators of the tool got the possibility to interact with the analysis. In the reconfiguration, the operator could change the input file of the cluster analysis and thus the end result. Usability tests showed that the extra added information about the clusters served as an amplification and a verification of the original results presented by RHC. In some cases the original result presented by RHC was used as a verification to user group identification made by the operator solely based on the extra added information. The usability tests showed that the complex analysis with its results could be understood and configured without considerable comprehension of the algorithm. Instead it seemed like it could be successfully used in order to identify user types with help of visual clues in the interface and default settings in the reconfiguration. The visualisation tool is shown to be successful in identifying and visualising user groups in an intuitive way.

The merging of business operations with computers and the Internet has largely transformed our way of life. In less than a decade, the Internet evolved from a primarily academic network into a highly sophisticated commercial marketing medium. It encompasses a variety of business and personal utilities and is accessible to a wide range of organizations and individuals. Statistics indicate phenomenal growth in the number of Internet users and consumers. In Taiwan, the government has embarked on a National Information Infrastructure project, in which the initial effort centered on the promotion of Internet use. Despite the recent explosion in Internet growth, little has been done to target the middle-aged group on the Web. In an effort to discover potential Internet users, Internet consumers, and new uses of the Net, this research focuses on middle-aged people in Taiwan and studies the results of different attitudes toward and behaviors on the Internet. This research profiles the population into three groups: non-Internet users, Internet users and Internet consumers and determines factors that enable or deter each group from either using or purchasing on the Internet. The study also projects potential and popular products and features that may boost electronic sales.