In the second paragraph it is mentioned that eigenvector of $H$ is rescaled by a factor of $\frac{\lambda_i} {\lambda_i +\alpha}$ What exactly meant by that ?
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Sycorax
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Daki Withanage
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1Can you work out the answer if you write down the inverse of $$ \begin{bmatrix} \lambda_1 & 0 \ 0 & \lambda_2 \end{bmatrix} + \alpha I? $$ – Sycorax Feb 09 '19 at 19:36
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1This is explained at the end of my post at https://stats.stackexchange.com/a/220324/919. – whuber Feb 09 '19 at 19:54
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Thanks @Sycorax for your great answers. This solved my ambiguity. :) – Daki Withanage Feb 09 '19 at 20:07