A service satisfaction-based trust evaluation model for cloud manufacturing

ABSTRACT

In the cloud manufacturing service model, a good trust relationship among trading entities including manufacturing service providers and consumers is the basis for service transactions. To characterize the cooperative trust effectively, the evaluation index system was built to quantize the service satisfaction by monitoring the data of historical service evaluation, and then a service satisfaction-based trust evaluation model was proposed. The direct satisfaction, the friend recommendation satisfaction and the platform satisfaction were integrated into the comprehensive trust. To improve the reliability of the proposed model, the time decay function was utilized to characterize the change of service satisfaction over time. Meanwhile, the comprehensive trust was corrected by using the service satisfaction volatility, which was taken as a mechanism of reward and punishment in the long-term transaction process. The experimental results verified that the model reflected the subjective preference of consumers and showed good accuracy and efficiency, especially in the case of big transaction data.

KEYWORDS:

• Cloud manufacturing
• service satisfaction
• trust evaluation
• mechanism of reward and punishment

Acknowledgment

This work is partially supported by National Key Technology Research and Development Program of the Ministry of Science and Technology of China (no. 2015BAF17B02), Foundation for Science and Technology Research Project of Chongqing (no.cstc2015zdcy-ztzx60007), and the Fundamental Research Funds for the Central Universities (no.2018CDJDCD0001). The authors would like to express their great appreciation to the reviewers for their constructive comments and suggestions.

Disclosure statement

We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influenceour work; there is no professional or other personal interest of any nature or kind in any product or company that could be construed as influencing the position presented in, or the review of, the manuscript.

Additional information

Funding

This work is supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China [no. 2015ZX04005003]; Foundation for Science and Technology Research Project of Chongqing [no.cstc2017zdcyzdzxX0005] and the Fundamental Research Funds for the Central Universities [no.2018CDXYJX0019].