Step 3 in the above algorithm could be implemented using more than the first principal component variable. However, for the reasons discussed in our implementation of the PCA model, we have decided to use only the first principal component variable. 上述演算法的第三個步驟,可以用第一個主要成分變數,以及其他變數來實現. 然而,因為在我們對PCA模型的實現中所討論的原因,我們決定只用第一個主要成分變數...
The advantage of the SPCA procedure over PCA is that pollutants not associated or only weakly associated with the adverse health outcomes have a significant chance of being excluded from the chosen model. Hereafter, our implementation of SPCA using the above algorithm will be referred to as the “SPCA model.” SPCA程序比起PCA的優點是,跟損害健康無關或只有些許關係的汙染物,很可能會被... 此後,使用上述演算法實現的SPCA,將被歸類為“SPCA 模式.”
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