题目内容
主成分分析的数学模型本质上是一种______变换。
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主成分分析的一般目的是变量的降维和主成分的解释。
主成分分析过程中对原始变量经过线性转换后所得的变量不一定不想关。
Passage 1Directions： You are going to read a passage with 10 statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter.Taking a job for the benefits
真核生物tRNA生物合成的叙述正确的是
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