A trust management mechanism for mobile ad hoc networks (MANETs) is proposed to cope with security issues that MANETs face due to time constraints as well as resource constraints in bandwidth, computational power, battery life, and unique wireless characteristics. The trust-based reputation scheme GlobalTrust is a reliable trust management mechanism. In this paper, a clustering algorithm is app...

In open environments in which autonomous agents can break contracts, computational models of trust have an important role to play in determining who to interact with and how interactions unfold. To this end, we develop such a trust model, based on confidence and reputation, and show how it can be concretely applied, using fuzzy sets, to guide agents in evaluating past interactions and in establ...

Recent advances in the fields of robotics, cyborg development, moral psychology, trust, multi agent-based systems and socionics have raised the need for a better understanding of ethics, moral reasoning, judgment and decision-making within the system of man and machines. Here we seek to understand key research questions concerning the interplay of ethical trust at the individual level and the s...

Traditionally, to handle security for stand-alone computers and small networks, user authentication and access control mechanisms would be almost enough. However, considering distributed networks such as the Internet and pervasive environments, these kinds of approaches are confronted with flexibility challenges and scalability problems. This is mainly because open environments lack a central c...

We propose a general possibilistic framework to determine the agent’s trust degree in a source, starting from the content of the messages such source provides and based on the beliefs of the agent about the capability of the source to provide “useful information”. The result is a framework with unique characteristics, which combines experience-, reputation-, content-, and category-based models ...

this study adopted a survey research strategy to examine the impact of servant leadership and its dimensions on team effectiveness and trust in teams. the servant leadership, a new model of leadership, in recent years has been an area of interest to researchers and administrative staff. furthermore, institutions of higher education in the third millennium, need to maintain and increase the reli...

Current level of the open and distributed systems deployment and development implies the need of both security and trust analysis, in particular for Remote Entrusting approach developed in RE-TRUST Project. Research in this field is reflected in a large list of papers. And in various papers there are different understandings of such notions like «security analysis» and «trust analysis», related...

We propose MITRA, a meta-model for the information flow in (computational) trust and reputation architectures. On an abstract level, MITRA describes the information flow as it is inherent in prominent trust and reputation models from the literature. We use MITRA to provide a structured comparison of these models. This makes it possible to get a clear overview of the complex research area. Furth...

A Grid Computing System is a geographically distributed system with different domains sharing resources. The resources should be shared with out loosing individual's confidentiality and control over their resource. Recently, trust has been recognized as an important factor for selection of best resource in grid. A novel trust model is proposed in this paper where the best resource is selec...

We study the problem of agents locating other agents that are both capable and willing to help complete assigned tasks. An agent incurs a fixed cost for each help request it sends out. To minimize this cost, the performance metric used in our work, an agent should learn based on past interactions to identify agents likely to help on a given task. We compare three trust mechanisms: success-based...