问题如下：
which of the following statements is incorrect?
选项：
A. In the cumulative accuracy profile or CAP(also called GINI curve), the accuracy ratio (AR) is defined as AR/AR+Ap, the closer this ratio is to 1, the more accurate is the model.
B. K-nearest neighbor approach uses Non-parametric classification
C. in the Support vector machines, the main idea is to separate the various classes of data (observations) using the best separating hyperplane (BSH), for which the distance to two parallel hyperplanes on each side is the largest.
D. In the Fisher Linear discriminant analysis, the principal aim is to segregate and classify a heterogeneous population in heterogeneous subsets.
解释：
答案：D is correct.
解析：本题让选项错误的一个描述，A/B/C三个描述均正确。D选项错误，D选项的正确描述为：
the principal aim is to segregate and classify a heterogeneous population in homogeneous subsets.
老师，选项D是什么意思？以及答案解释的翻译。 
