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Characterizing Economic And Social Properties Of Trust And Reputation Systems In P2p Environment

机译:在P2p环境中表征信任和声誉系统的经济和社会属性

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Considering the fact that P2P (Peer-to-Peer) systems are self-organized and autonomous, social-control mechanism (like trust and reputation) is essential to evaluate the trustworthiness of participating peers and to combat the selfish, dishonest and malicious peer behaviors. So, naturally, we advocate that P2P systems that gradually act as an important information infrastructure should be multi-disciplinary research topic, and reflect certain features of our society. So, from economic and social perspective, this paper designs the incentive-compatible reputation feedback scheme based on well-known economic model, and characterizes the social features of trust network in terms of efficiency and cost. Specifically, our framework has two distinctive purposes: first, from high-level perspective, we argue trust system is a special kind of social network, and an accurate characterization of the structural properties of the network can be of fundamental importance to understand the dynamics of the system. Thus, inspired by the concept of weighted small-world, this paper proposes new measurements to characterize the social properties of trust system, that is, high global and local efficiency, and low cost; then, from relative low-level perspective, we argue that reputation feedback is a special kind of information, and it is not free. So, based on economic model, VCG (Vickrey-Clarke-Grove)-like reputation remuneration mechanism is proposed to stimulate rational peers not only to provide reputation feedback, but truthfully offer feedback. Furthermore, considering that trust and reputation is subjective, we classify the trust into functional trust and referral trust, and extend the referral trust to include two factors: similarity and truthfulness, which can efficiently reduce the trust inference error. The preliminary simulation results show the benefits of our proposal and the emergence of certain social properties in trust network.
机译:考虑到P2P(对等)系统是自组织和自治的事实,社会控制机制(如信任和声誉)对于评估参与对等方的可信度以及打击自私,不诚实和恶意的对等行为至关重要。因此,自然地,我们提倡逐渐成为重要信息基础设施的P2P系统应该是多学科研究的主题,并反映我们社会的某些特征。因此,从经济和社会的角度出发,本文基于众所周知的经济模型设计了激励相容的声誉反馈方案,并从效率和成本两方面对信任网络的社会特征进行了刻画。具体来说,我们的框架有两个独特的目的:首先,从高层的角度来看,我们认为信任系统是一种特殊的社交网络,准确地描述网络的结构特性对于理解网络的动态至关重要。系统。因此,受加权小世界概念的启发,本文提出了新的度量方法来表征信任系统的社会属性,即全球和本地效率高,成本低;然后,从相对较低的角度来看,我们认为信誉反馈是一种特殊的信息,并且不是免费的。因此,基于经济模型,提出了类似VCG(Vickrey-Clarke-Grove)的声誉报酬机制,以刺激理性的同伴,不仅提供声誉反馈,而且如实提供反馈。此外,考虑到信任和声誉是主观的,我们将信任分为功能性信任和引用信任,并将引用信任扩展到包括两个因素:相似性和真实性,可以有效地减少信任推理错误。初步的仿真结果表明了我们的建议的好处以及信任网络中某些社会属性的出现。

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