P2P network trust cloud model calculating method based on interest groups

Abstract

The invention discloses a P2P network trust cloud model calculating method based on interest groups. The method of the invention is composed of the interest group division and message passing process, the trust cloud establishment process and the node trust level evaluation process. The interest group division and message passing process is that a network is divided into different groups according to the interest of each group, and the intra-node message passing mode and the inter-node message passing mode are determined separately. The trust cloud establishment process is that a node trust relationship is expressed through three numerical characteristics, i.e. the expectation, the entropy and the hyper entropy, of a cloud model to establish a comprehensive trust cloud which is composed of a direct trust cloud and a recommended trust cloud. The node trust level evaluation process is that a node comprehensive trust value is evaluated through a trust value calculation method which gives priority to the direct experience. The method of the invention not only can be used to solve the problem that the trust relationship is hard to establish due to excessive message passing in the P2P network and asymmetric interests, and but also can be used to reduce the risk of obtaining unreliable recommended information.

Description

technical field [0001] The invention belongs to the technical field of trust model research, in particular to a trust cloud model calculation method based on interest groups in a P2P network. Background technique [0002] P2P has existed since the birth of the Internet, and it is the origin and foundation of the Internet. As early as 1979, Truscott and Ellis developed a typical P2P-based application: a news discussion group, which acts as a communication method on the Internet and plays a role in information dissemination. In recent years, the P2P network has grown rapidly on the Internet with its unique advantages of distribution and self-organization, and has become an important part of the Internet. The P2P network does not depend on the central node and can effectively utilize various idle resources in the network. Great development in many ways. However, due to the peer-to-peer nature of the P2P network, nodes can freely enter and exit the network, resulting in many s...

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a reliable calculation method for the trust model in the P2P network, and solve the problems of complex calculation, low accuracy and lack of reward and punishment mechanism in the prior art

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