Fuzzy Evaluation Model of Process Improvement Capability with Costs Consideration

The Taguchi capability index, which reflects the expected loss and yield of a process, is useful index for evaluating quality process. Several scholars have proposed process improvement based on value function as well corresponding cost improvement. There been number studies using to develop suppliers’ evaluation models, whereas models potential relatively lacking. Thus, this study applies an model supplier’s capability, can be provided industry application. Besides, owing current need respond quickly, coupled with considerations limits technical capabilities, sample size sampling testing usually not large. Consequently, developed in adopts fuzzy method confidence interval. This reduces risk misjudgment due errors improves accuracy because it incorporate experts their accumulated experiences.