A Novel Cloud-Based Subjective Trust Model

The creditability and reliability of Web services is becoming an important factor to SOAs. In this paper, a cloud trust model is proposed to maintain the trustiness of services. Trust cloud transform which can reduce the trust date transferred is presented. Trust cloud operators which use cloud drops as the basic processing units are defined. The combination and update of the trust cloud are proposed. Six type of Web sites' state are defined. Experiment shows that this model could maintain the recent behaviors of Web sites and could be used to estimate the creditability of the next behaviors very well.