Quantitative Analysis of a Weak Correlation between Complicated Data on the Basis of Principal Component Analysis

Figure 2

Schematic diagram of confidence ellipse analysis included in the proposed method, in which a two-dimensional confidence ellipse example is given to deliver the strategy. Here, the two ellipses represent two classes of samples, and the data points with two different colors denote samples corresponding to different classes. The overlapping and nonoverlapping areas of ellipses include the common and noncommon characteristics of the two types of samples.