A new metric model for trustworthiness of softwares

As people depend more and more on softwares, there has been an increasing demand for the trustworthiness of the software. To measure the trustworthiness of software, we need to design appropriate trustworthy metrics. We once proposed four metric criteria for the multi-dimensional trustworthiness of the software and a metric model which satisfies these four criteria. In this paper, we describe a new metric model for the trustworthiness of the software which satisfies almost all these four criteria. Compared with the previous model, this model is better in the view of substitutivity. We also give a polynomial-time combinational algorithm for estimating the weight vectors appeared in the model based on the priority methods.