Abstract:

The existing reputation-based trust model takes the different reputations of the nodes in different aspects into account, but does not consider the di  fference in the aspect of content. The paper improves the existing trust model TBRM, and increases the punishment degree on the nodes which behave badly  recently by introducing the 2D matrix refinement trust factor and using the punishment factor. In addition,building a reputation chain may help to find hlgh-quality nodes quickly.

Key words: P2P, P2P network, reputation, trust