This paper discusses masking, boosting, reducing, enhancing and mutual effect of data influence in ridge regression. The effect and meaning of ridge residuals and off-diagonal elements of the ridge hat matrix are inundated.

• 本文探讨了岭回归中数据影响的掩盖、提升、降低、增大以及交互作用,揭示出了岭帽子矩阵的非对角元素和岭残差的作用及意义。