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Distributed and Self-organizing Systems
Distributed and Self-organizing Systems


Content Trust Initialization at the Joining of a new Web Application
Content Trust Initialization at the Joining of a new Web Application



Research Area

Web Engineering


Jun Li

Jun Li






The varying quality of Information resource makes the trust judgement complicated from web entities. In the original web architecture, the trust layer consists of authentication, identification and proof checking but nothing about the content itself. Content trust is content based judgement about a piece of information particularly from the given context. This means the particular information from the context is processed and contributes trust value and let the entity decide whether this information is trusted or not. The process is a combined work from a set of factors which affect how an entity determine trust in content provided by other web information sources.

In a redecentralized network when the trust relation is already established among the community members, trust value of other entities from the perspective of the entities is stored locally as a basement for further calculation and decision making on whether to trust a piece of information or not. Many factors from the 19 main content trust factors can influence the trust value because this content trust model is already running among the community. Some factors such as direct experience
or recommendation can be processed due to the existence of a local record information from each entity. But there is no history record to refer to for such trust value calculation when it comes to the case that a new entity trying to join this community and gain trust from the community members. Then it comes to this research focusing on how a new entity initialize the trust mechanism based on these content trust factors.

First point about the initialization would be what factors among the 19 factors can be considered as a process for this new entity since some factors cannot work as intended for practical reasons. As the example mentioned above, direct experience and recommendation cannot initialize properly due to the lack of the information history record. Some other factors would be similarly unsuitable for the initialization too. But it does not mean that these factors are ruled out for the trust value judgement on the new entity. Some of these unsuitable factors may still be modified in a way to meet the practical demand for the initialization and contribute to the trust judgement. 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 initializing content trust in a redecentralized web within the use case of a new web application. This particularly includes the state of the art regarding initialization of trust and its factors. The demonstration of feasibility with an implementation prototyp of the concept is part of this thesis as well as a suitable evaluation with exemplary use cases.

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