×

A novel scalable aggregation algorithm of feedback trust information. (Chinese. English summary) Zbl 1164.68347

Summary: This paper focuses on the problem that current dynamic trust aggregation algorithms searching for feedback trust information are based on trust chain in broadcast way, leading to slow convergence and bad scalability. A new scalable feedback trust information aggregation algorithm is proposed, presenting concept and definition of Direct Trust Tree (DTT). Based on DTT a novel aggregating algorithm of scalable feedback trust information is proposed, and the DTT is constructed according to a node’s direct trust relation. Then, the feedback trust information is searched by using DTT instead of in broadcast manner. Two new parameters, quality factor and distance factor, are introduced to adjust the scale of aggregating computation automatically. Simulation results show that the algorithm remarkably enhances the convergence of feedback trust information aggregating computation. Moreover, it has better detecting capability against malicious feedback actions and features greater robustness when the ratio of malicious nodes is increased.

MSC:

68P20 Information storage and retrieval of data
PDFBibTeX XMLCite