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针对以往草坪质量评价方法存在人为权重赋值误差,以及简便计算等方面的不足的问题,提出了草坪坪用质量指标评定的投影寻踪等级评价模型.该方法可以依据标准样本自身的数据特性寻求最佳投影方向,通过最佳投影方向与评价指标的线性投影得到投影指标值,通过这一指标可以对样本进行统一评价和分类,并可利用最佳投影方向判断各评价指标对综合评价目标的贡献大小.排除人为权重干扰,对哈尔滨地区引种的冰草(A gropyron elongatum)坪用质量进行了综合判定.
In order to solve the problem of error in evaluation of artificial grassland weight and the shortcoming of simple calculation and so on, the evaluation model of projection pursuit grade of lawn with quality index is proposed in this paper, which can be based on the data characteristics of standard sample Good projection direction, the projection index value is obtained by linear projection of the best projection direction and the evaluation index. Through this index, the samples can be uniformly evaluated and classified, and the best projection direction can be used to judge the contribution of each evaluation index to the comprehensive evaluation target Size.It eliminates the interference of artificial weight and makes a comprehensive judgment on the quality of A gropyron elongatum introduced in Harbin.