Trust is a vital component of human society. Without trust, we would all have to continuously focus on survival, i.e., our physical security and the daily finding of food and water. With trust, we developed the division of labor that allowed us to sleep safely and develop a complex society. However, the concept of trust is very defused and not described operationally, i.e., in terms of the mech...

We describe research towards creating a computational model for recognizing interpersonal trust in social interactions. We found that four negative gestural cues— leaning-backward, face-touching, hand-touching, and crossing-arms—are together predictive of lower levels of trust. Three positive gestural cues—leaningforward, having arms-in-lap, and open-arms—are predictive of higher levels of trus...

During the last twenty years, a huge amount of trust and reputation models have been proposed, each of them with their own particularities and targeting different domains. While much effort has been made in defining ever-increasing complex models, little attention has been paid to abstract away the particularities of these models into a common set of easily understandable concepts. We propose a...

This paper defines and empirically tests a new concept of general trust in the remote-hosting (RH) vendor community. In the absence of prior experience or familiarity with RH vendors, and because third-party guarantees do not yet exist to assure expected results, previous trust mechanisms are inapplicable. Therefore, based on the Transaction Cost Economy theory and on the broad trust-related bo...

The migration of processing of computational jobs from centralized systems to open distributed systems have resulted in many communication channels and transactions, to span a range of domains and organizations, not all of which can be trusted to the same extent. Inconsistencies in current trust relationships highlight the need for a flexible, general-purpose trust management system that can na...

The computational trust paradigm supposes that it is possible to quantify trust relations that occur within some software systems. The paradigm covers a variety of trust systems, such as trust management systems, reputation systems and trust-based security systems. Different trust systems have different assumptions, and various trust models have been developed on top of these assumptions Typica...

We propose Soft Constraint Logic Programming based on semirings as a mean to easily represent and evaluate trust propagation in small-world networks. To attain this, we model the trust network adapting it to a weighted and-or graph, where the weight on a connector corresponds to the trust and confidence feedback values among the connected nodes. Semirings are the parametric and flexible structu...

Computational trust systems are currently considered enabler tools for the automation and the general acceptance of global electronic business-tobusiness processes, such as the sourcing and the selection of business partners outside the sphere of relationships of the selector. However, most of the existing trust models use simple statistical techniques to aggregate trust evidences into trustwor...

The use of reputation systems has been proposed for various applications, e. g., to estimate the trustworthiness of sellers and buyers in electronic transactions. Reputation systems collect opinions of users about properties of certain services, subjects and other users and evaluate these opinions. It is important that the results of reputation systems are consistent with intuitive expectations...

In the paper we address the trustworthiness of computational engineering distributed systems based on semantic web services. We present a security model with three components: web service messaging, monitoring and replication. Web service messaging has well standardized scenarios that we use as a foundation of our work oriented to trust monitoring and replication control. The model incorporate ...