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为了行文的系统性和让读者对“二次正交旋转组合回归设计”先有一个粗线条的全面了解,笔者在详述二次正交旋转组合回归设计工作步骤之前,将今后涉及到的概念、术语、符号集中地在此加以深入浅出的解释。1、正交性一个矩阵如果能满足任一列之和等于零;任二列的内积之和等于零即: 三X创=O 艺X’X以J=0 (以为试验次数,仪=1,2,…,、1)则称这个矩阵具有正
In order to systematically write the text and let the readers have a comprehensive understanding of the “second orthogonal rotation combined regression design” before the detailed design work steps of quadratic orthogonal rotation combination regression, the author will refer to the concepts, Terminology, symbols concentrated in this easy to explain. 1, Orthogonality If a matrix that satisfies any one of the columns equals zero, the sum of the inner products of any two columns equals zero, ie, x = x , ... ,, 1) Then we call this matrix positive