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Multivariate techniques
such Principal Component Analysis (PCA) was employed to extract
useful information from the spectral data set. PCA is essentially a
descriptive method. The main goals of this procedure are to find
relationships between the different parameters (objects and vari-
ables) and to detect possible clusters or trends within objects
and/or variables.ÇëÎʸ÷λǰ±²£¬Õâ¸öpcaÊÇʲô·½·¨£¿¸ø¸ö²Î¿¼ÎÄÏ׿ÉÒÔÂð£¿ÏÂÃæÊÇpca·½·¨µÃµ½µÄÁ½¸öͼ



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