Distributed Trust Computations for Decentralized Systems

本计画将探讨分散式与完全分散式系统中的信任计算（或信任推论）问题。工作将特别集中在分布式资源共享的对等网络中的信任推理，其中没有中央权威。大多数这类系统的设计都是基于这样一个假设：大部分用户是“利他主义”的，而一小部分用户可能是任意“恶意”的。这项研究旨在解决所有用户都是“自私”的更现实的情况本论文的主要工作是：建立分布式系统中信任推理的分析模型，设计有效的协议和机制，保证系统用户的合作行为，建立分布式系统中信任推理的分析模型，建立分布式系统中信任推理的分析模型。并在马里兰州大学开发的NICE框架内以及其他现有的对等应用程序中实施此类协议（并测试其有效性）。研究生和本科生将参与本研究的各个方面。作为这项研究的一部分开发的软件将免费分发给公众使用。

AbstractThis project will investigate the problem of trust computation (or trust inference) within distributed and completely decentralized systems. Work will specifically focus on trust inference in peer-to-peer networks for distributed resource sharing, where no central authority is assumed. Most systems of this sort are designed based on the assumption that a large fraction of users are "altrusitic" while a smaller percentage of users may be arbitrarily "malicious". This research is intended to address the more realistic case where all users are "selfish" (or "rational"), and are motivated by their own self-interest.This work aims to develop appropriate models for analyzing trust inference in distributed systems; to design efficient protocols and mechanisms to ensure cooperative behavior by the users of the system; and to implement such protocols (and test their effectiveness) within the NICE framework developed at the University of Maryland as well as other existing peer-to-peer applications.Graduate and undergraduate students will be involved in all aspects of this research. Software developed as part of this research will be freely distributed for public use.