表 3. Cumulative contribution rates of PC1-PC5 based on KPCA (removal of W) .
KPCA 处理得到的各主成分累计贡献率（去除 W 参数）
| KPCA处理的主成分 | 累计贡献率 |
| PC1 | 61.73% |
| PC2 | 81.32% |
| PC3 | 93.46% |
| PC4 | 96.83% |
| PC5 | 98.77% |
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