Purpose – The purpose of this paper is to analyse and describe several trust and reputation models for distributed and heterogeneous networks and compare some of them in order to provide an evaluation amongst some of the most relevant works in this field. Design/methodology/approach – The authors have developed a trust and reputation models simulator for wireless sensor networks, called TRMSim-...

There are currently very few practical methods for assessing the quality of resources or the reliability of other entities in the online environment. This makes it difficult to make decisions about which resources can be relied upon and which entities it is safe to interact with. Trust and reputation systems are aimed at solving this problem by enabling service consumers to reliably assess the ...

An improved practical Byzantine fault tolerance (Practical Fault Tolerant consensus algorithm based on reputation, RPBFT) grouping and reputation value voting is proposed for the problems of high communication complexity, poor scalability, random selection master nodes (PBFT) consortium chain. First, consistency process optimized to take response speed each group leader as basis grouping, intra...

Though trust and reputation systems have been extensively studied, general architectural commonalities between the two have received little attention. In this paper, we present a life cycle model of reputation and trust systems, along with accompanying measures of how much effect signaling and sanctioning have on a given system. We map reputation attacks within our framework and apply our frame...

Loan servicers today face increasing regulatory and investor pressures to make sure they properly protect and preserve the integrity of their loan records. Data security and data integrity, unfortunately, are two often-overlooked aspects of loan servicing. Failure in either area is a recipe for reputation damage at best, and financial disaster, at worst. The goal of this paper is to provide loa...

Reputation management systems are in wide-spread use to regulate collaborations in cooperative systems. Collusion is one of the most destructive malicious behaviors in which colluders seek to affect a reputation management system in an unfair manner. Many reputation systems are vulnerable to collusion, and some model-specific mitigation methods are proposed to combat collusion. Detection of col...

Purpose This study aims to examine the relationship of information quality social media, media reputation, political marketing activities, trust and involvement millennials. Methodology The empirical analysis was conducted using a sample 309 used online survey for data collection. After passing reliability validity tests, were analyzed with partial least squares structural equation modeling. Fi...

Engineering optimization needs easy-to-use and efficient optimization tools that can be employed for practical purposes. In this context, stochastic search techniques have good reputation and wide acceptability as being powerful tools for solving complex engineering optimization problems. However, increased complexity of some metaheuristic algorithms sometimes makes it difficult for engineers t...

The most widely used reputation models assume uniform users’ preference structure. In this paper a new reputation management model is presented. It is focused on aggregation of community wide reputation in situation when agents do not share the same preference structure. The reputation is interpreted as vectors of attributes that represent several reputation evaluation criteria. Outcomes of the...