基于改进TOPSIS方法的烤烟化学品质综合评价

在分析传统逼近理想解法（TOPSIS法）缺陷及其成因的基础上，利用二次标准化法、绝对理想解、层次分析法和新的距离公式弥补其相对接近度计算方法不能完全反映各评价对象优劣性的不足，建立了改进的TOPSIS方法，并采用该方法对四川烟叶的化学品质进行了综合评价。此外，为验证改进TOPSIS法的可行性和合理性，将其评价结果与传统TOPSIS法、感官质量评价结果进行了对比。结果表明：(1)四川省45个烟叶样本可以分为3类，化学品质表现中等以上的烟叶样本占近50%；(2)与传统TOPSIS法相比，改进TOPSIS法评价结果与感官质量评价结果一致性更高。利用改进TOPSIS法进行烤烟化学品质综合评价具有一定的可靠性。

Comprehensive evaluation of chemical quality of flue-cured tobacco based on improved TOPSIS method

Through analyzing the defects and causes of traditional techniques for order preference by similarity to ideal solution (TOPSIS) method, an improved TOPSIS method was established by using a combination of quadratic standardization, absolute ideal solution, analytic hierarchy process and new distance formula. The improved TOPSIS could fully reflect the superiority/inferiority of each evaluation object and was used to comprehensively evaluate the chemical quality of flue-cured tobacco from Sichuan Province. Furthermore, the evaluation results of the improved TOPSIS method were compared with those of traditional TOPSIS method and sensory quality evaluation method to verify the feasibility and rationality of the improved method. The results showed that: 1) Forty-five tobacco samples from Sichuan Province could be divided into three categories, and nearly 50% of the tobacco samples had medium or above chemical quality classifications. 2) Compared with traditional TOPSIS method, there was higher consistency between the evaluation results by the improved TOPSIS method and those of sensory quality evaluation method. Thus the improved method has improved reliability to comprehensively evaluate the chemical quality of flue-cured tobacco.