Abstract
The Web Quality Assessment (WQA) model formalizes the customizable quality assessment (QA) process on the Web – every information consumer can define a set of QA policies, which are then, as part of the QA process, applied to the set of resources requested by the consumer to deduce the quality of the resources. To improve the result of such QA process, we introduced a concept of QA social networks – a mechanism to share QA policies among trustworthy entities to reinforce the number of QA policies applied during the QA process in the WQA model.
In this paper, we detail the trust model underpinning the QA social network, i.e. what we mean under “trusting another entity” and how trust can be expressed and persisted; we propose a scalable and robust trust algorithm GriTa capable of deriving trust between arbitrary two entities in the QA social network.