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Nowadays recommender systems are developed to provide information for users to choose the best things that they want. Recently different collaborative filtering techniques have been successfully employed to provide precise recommendations. However, sparsity problem is still considered as an important remained challenges. Existing CF based recommendation methods generally focus on positive similarities...
Trust-aware recommender systems are intelligent technology applications that make use of trust information and user personal data in social networks to provide personalized recommendations. Trust clearly elevates accuracy of prediction rating for users; especially, when the user's preferences are insufficient, trustworthy friend or people viewpoints can be confidence referenced. However in previous...
Existing access control models which are designed to preserve integrity are inadequate for distributed system. In this paper, we propose a trust aware access control model called TAAC, which extends the existing access control models with trust level. Moreover, it assigns trust level to each subject and object, and can dynamically adjust it. We partly implement TAAC model based on attestation.
When the computer-mediated remote collaborative design team need to develop trust, it is advantageous for the team to match communication modes to information exchange channels. This paper discusses trust level in different modechannel combinations environment with the aim to find out the best matches of communication modes (sequence, layer, and net mode) and information exchange channels (text, audio,...
Individual trust development is vital to online collaboration in teams. A semi-virtual case study, which is composed of eight collaborative student groups using Web based computer support, is tracked by the authors over one year. Surveys, interviews and documentation are applied in the data collection. A scale balance model and trust spider diagram are used to analyze the data for all three stages...
Nowadays, most of access control models have been studied extensively in centralized and static environment, and they seldom meet the requirements of some dynamic collaborative environments, such as Grid, P2P and ad-hoc network. In this paper, the trust mechanism of the agents in collaborative environments is analyzed, a suitable method is introduced for calculating the agentpsilas trust in collaborative...
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