Analysis indicated that it is an effective method to combine path-analysis with principal component analysis for integrated indirect selection of photosynthetic rate.
分析表明：通径分析与主成份分析相结合的方法是进行光合速率综合的间接选择的有效方法。
Based on the current index system of credit rating, we use Principal Component Analysis to filtrate the index quantitatively, overcoming the subjectivity of index selection.
本文在现有的信用评级法指标体系基础上，运用主成分分析法定量筛选评价指标，克服指标选取的主观性。
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