基于熵权-云模型的印品质量评价模型

Print Quality Evaluation Model Based on Entropy Weight-Cloud Model

目的目前各种印刷质量评价模型均有一定的局限性,提出一种新的印品评价模型,以有效准确地判断印品的质量。方法利用熵权法解决参数之间的平衡性问题,确定5个参数的加权分别为0.2,0.25,0.2,0.17,0.19,同时参照ISO印刷标准,确定最终的印刷品正态评价集,选取5个基本印刷参数进行云模型的计算。结果 5种样品的印品质量评价最大隶属度分别为0.7800,0.7038,0.7257,0.6105,0.3870,由此得出印刷品的五级制等级分别为优、中、中、优和优,用于衡量印刷品的质量。结论运用熵权法加权后的云模型充分考虑印刷品评价的主观性与客观性的统一,评价出印品质量的等级更加客观有效,与topsis方法的结论保持一致,说明了模型的有效性和准确性,同时云模型更利用分析印刷机械的印刷特征,为印刷操作人员提供相应的理论指导。

The work aims to propose a new evaluation model of prints to determine their quality effectively and accurately, with respect to the fact that the various print quality evaluation models have some limitations. The problem of equilibrium between parameters was solved in the entropy weight method. The weights of the five parameters were respectively 0.2, 0.25, 0.2, 0.17 and 0.19. In the meantime, in reference to ISO printing standards, the final print normal evaluation set was determined and five basic printing parameters were selected to calculate the cloud model. The maximum membership of print quality evaluation of five samples was respectively 0.7800, 0.7038, 0.7257, 0.6105 and 0.3870. The five-level grade of the prints derived was good, qualified, medium, good and good, used to measure the print quality. The cloud model weighted in the entropy weight method takes full consideration of the unity of subjectivity and objectivity. The print quality ranking evaluated by such model is more objective and effective. The consistency with the conclusions made based on topsis indicates the effectiveness and accuracy of the model. Meanwhile, the cloud model provides the corresponding theoretical guidance for the printing operators by making use of and analyzing the printability of printing machinery.