Tone Žagar (2008) The role of visualization in the telephone fraud management. MSc thesis.
Financial losses in telephony caused by fraud represent four to six percents of telecommunication industry income. An answer to this threat is increasing research of fraud management systems. One of the less researched branches of this field is the usage of visualization in fraud detection and prevention. The purpose of this work is to research and give an estimate for the usability of it. Taxonomic classification of fraud and fraud management system was the first step in order to get a clear picture of the tasks that fraud management system has to carry out. With that and visualization theory in mind we then searched for the suitable visual representations for each task. The conclusion was that visualization is not a critical part of the system but a valuable additional tool that will increase the productivity of the analyst. In the fraud prevention phase visualization will help to analyze information received from elements that are used to protect the system, detection phase will benefit as visualization is efficient for huge dataset analysis and in the last processing phase visualization will help to filter the alarms reported from the previous phase. But we have to be careful, as visualization is only useful if properly implemented, with presentation appearance and functionality in mind. The contribution of this work is a systematical overview of the addressed topic, application model and visualization prototypes based on real life examples. The theoretical findings were confirmed with practical examples. Further work should include a closer cooperation with fraud analysts and research with empirical methods. That would most likely bring us closer to new ideas and better results.
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