Visualization of Trust Relationships in the Redecentralized Web
Majid Ali Khan
Based around the advancement of privacy protection and helping individuals to regain control over their personal data, there have been efforts and initiatives towards the redecentralization of the web. To deal with the large amount of data providers in decentralized systems, it will be necessary to use web applications that automatically select a sufficiently trustworthy source of information. This requires those web applications to make trust-aware decisions, which, in turn, requires a framework to adequately evaluate and judge trust automatically. To enable web applications to make trust-aware decisions autonomously, a crucial step is to identify the most suitable trust models. Despite the various sophisticated trust mechanics, scales and models proposed in the literature for evaluating an application’s trust, the examination of them with different scenarios and configurations is not trivial. To remedy this issue, it is vital that researchers use a generic testing environment that is repeatable and supports the trust analysis of existing solutions. A testing environment provides insights to users and assists them to compare different models by experimenting with alternative trust dimensions and scenarios.
The objective of this thesis is to develop and implement an improved version of such a web-based trust testbed, called aTLAS, by enhancing its front-end in the dimensions of the testbed’s scenario creation and adaption capabilities as well as the result processing and the respective visualizations. Therewith, the testbed improves its usability based on state-of-the-art approaches from other web-based testbeds as well as trust testbeds and their visualization concepts.
The objective of this thesis is to find an approach or combination of approaches for the previously mentioned problems and tasks in the context of visualizing trust relationships for web applications in a redecentralized web. This particularly includes the state of the art regarding trust testbeds as well as webbased testbeds and their visualization concepts. The demonstration of feasibility with an implementation prototype of the concept is part of this thesis as well as a suitable evaluation with exemplary use cases.