The scientific research in the area of computational trust and reputation mechanisms for virtual societies is a recent discipline oriented to increase the reliability and performance of electronic communities by introducing in such communities these well known human social control mechanisms. Computer science has moved from the paradigm of an isolated machine to the paradigm of a network of sys...

Trust management and Reputation models are becoming integral part of Internet based applications such as CSCW, E-commerce and Grid Computing. Also the trust dimension is a significant social structure and key to social relations within a collaborative community. Collaborative Decision Making (CDM) is a difficult task in the context of distributed environment (information across different geogra...

the current research tries to offer a conceptual model in order to create trust among people for choosing virtual universities. to this end, the conceptual model of research has been designed with nine factors. the relationship among factors tested by using statistical methods such as factor analysis and path analysis. in the end, five components were established from among the affecting factor...

Information systems are ever more connected to the Internet, which gives wide opportunities for interacting with other actors, systems and resources and for exploiting the open and vast marked. This pushes the limits for security mechanisms which in general are too rigorous to fully adapt to such a dynamic and heterogeneous environment. Trust mechanisms can supplement the security mechanisms in...

In this talk we describe a class of models of social interaction called TAG models – trust, advice, and gossip. We expand this model by incorporating a computational model of emotion, called the ACT emotion engine derived from mathematical sociology and cognition.

In this position paper we examine some of the aspects of trust models, deployment, use and ‘misuse,’ and present a manifesto for the application of computational trust in sociotechnical systems. Computational Trust formalizes the trust processes in humans in order to allow artificial systems to better make decisions or give better advice. This is because trust is flexible, readily understood, a...

An Electronic Institution includes a normative environment with rules and norms for agents’ interoperability, and is also a service providing platform that assists agents in the task of establishing and conducting normative relationships (contracts). Using this platform, agents representing organizations willing to engage in a collective contractual activity select partners according to differe...

Trust mechanisms can allow an agent to identify the most trustworthy entity to which a task should be delegated. Now this entity may further delegate the task, ultimately resulting in a delegation chain representing the sub-delegation process. Such delegation chains present a problem for current trust evaluation mechanisms, as they typically which reward or penalise a single agent rather than s...

We propose a concept that combines the cognitive with the computational approaches to experience-based trust reasoning. We emphasize that a cognitive component is vital for computationally modeling trust. At the same time, we recognize the predictive nature of trust. This suggests a combination of the different approaches. The idea is to introduce a cognitive component that produces factual pos...