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Self-adapting dynamic trust weight estimation method

A self-adaptive, weighted technology, applied in the field of trust management, can solve problems such as not reflecting scientificity and rationality, difficult to adjust, and lack of self-adaptation

Inactive Publication Date: 2009-04-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods are all subjective methods, which cannot reflect their scientificity and rationality, and lack of self-adaptability. Once the weights W1 and W2 are determined subjectively, it will be difficult to adjust them dynamically by the network system in practical applications.

Method used

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  • Self-adapting dynamic trust weight estimation method

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Embodiment Construction

[0029] The present invention will be further described in detail in conjunction with the accompanying drawings and specific embodiments.

[0030] In the self-adaptive dynamic trust weight evaluation method described in the present invention, the node P is randomly selected in the distributed network i , node P j , node P i Node P needs to be evaluated j The overall trust degree Γ(P i , P j ), including the following steps:

[0031] Step 1: Calculate P i to P j The direct trust degree Γ D (P i , P j )

[0032] The traditional direct trust degree calculation method based on the history function is adopted. Let node P i with P j Trust satisfaction ratings generated in the most recent h interactions are set as E ij = { e ij ( 1 ) , e ij ( 2 ...

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Abstract

The invention belongs to the trust management field of large-scale distributed network application and particularly relates to a self-adapting dynamic trust weight evaluating method which is particularly fit for various large-scale open distributed applications of gridding, pervasive computing, P2P (peer-to-peer) computing, Ad hoc (mobile ad hoc networking), electronic commerce and the like based on Internet as a basic platform. On the basis of existing direct trust evaluating method based on historical function and a feedback trust polymerization technology based on path function, the invention provides a method for using two parameters including confidence factor and feedback factor to automatically establish and dynamically adjust weight calculated by fusing direct trust and feedback trust, the invention overcomes the defect of confirming the weight subjectively in common use before, thus leading the invention to have good scientificity and higher practical application value.

Description

technical field [0001] The invention belongs to the field of trust management in large-scale distributed network applications, and in particular relates to an adaptive dynamic trust weight evaluation method. Background technique [0002] With the in-depth study of Internet-based platforms and various complex and open distributed application environments (such as grid, P2P, e-commerce, e-government, Ad hoc and pervasive computing, etc.), the system is represented by multiple software A dynamic collaboration model of service composition. In this dynamic and uncertain environment, providing users with a reliable and secure trusted execution environment and information sharing services is facing severe challenges: first, the application environment is heterogeneous, dynamic, distributed and multi- Second, the management of nodes such as users, applications, computing resources, and computing environments is no longer centralized and closed, but open, dynamic, and distributed; i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/06
Inventor 桂小林李小勇毛倩何欣
Owner XI AN JIAOTONG UNIV
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