判别分析是属于分辨样品类型的一种统计方法,故也称分辨法,它是根据样品的 P 个测定指标(又称判别变量,如 P 个化学元素含量,一般 P>2),对一批未知样品进行分类;前提是已知一些样品的分类,然后根据 P 个测定指标来确定未知样品究竟归属哪一类。判别分析有两组判别(或称二级分辨)和多组判别(或称多级分辨)之分。 Discriminant analysis is a statistical method to distinguish sample types. Therefore, it is also called resolution method. It is based on P measurement indexes (also called discriminant variables, such as P chemical element content, P> 2 in general) Unknown samples are classified; the premise is to know the classification of some samples, and then based on the P measurement indicators to determine the unknown sample exactly belongs to which category. Discriminant analysis has two sets of discrimination (or secondary resolution) and multiple sets of discrimination (or multi-level resolution) of the points.