Sample selection of testability verification experiment based on multi-signal modeling methodology

To optimize the testability verification experiment scheme,an optimized failure sample selection algorithm is put forward.And then the formalization definition and modeling steps of multi-signal methodology are introduced.Multi-signal modeling is applied to describe the dependency relation between failure and test,and the failure-testability dependency matrix and the failure-failure dependency matrix are founded.On the restraint requirement of sufficient coverage the least failure sample size is confirmed which is restricted to cost of testability verification experiment.Finally,an example proves that the method reduce the cost of testability verification experiment.