szcf-weiya

## similar experiments in Ye (1998) Ye, J. (1998). On Measuring and Correcting the Effects of Data Mining and Model Selection. Journal of the American Statistical Association, 93(441), 120–131. https://doi.org/10.2307/2669609...

@wind-mark 谢谢！

> 请问为什么所有的习题解答的图片都看不了了 ...难过 emmm 你看的是 closed Issue 里面的吗，有 `solved` 标记的，只有那些是写完了的 :frowning:. 我刚刚看了一下图片都是正常的呀

@determined-poplar 嗯嗯，注意可能需要翻墙.

References: - [Local polynomial regression: Why does the variance increase monotonically in the degree?](https://stats.stackexchange.com/questions/139082/local-polynomial-regression-why-does-the-variance-increase-monotonically-in-the), but the proof seems problematic, as pointed out in Tubardus (https://stats.stackexchange.com/users/86836/tubardus), Question about the answer to...

**My own idea, different from the approach in the above reference.** also post in ya wei (https://stats.stackexchange.com/users/171750/ya-wei), Local polynomial regression: Why does the variance increase monotonically in the degree?, URL...

 

## differentiability of composite functions Surb (https://math.stackexchange.com/users/154545/surb), Differentiability of product/composition of function, URL (version: 2017-04-13): https://math.stackexchange.com/q/856415  user147263, Can it be that $f$ and $g$ are everywhere continuous but nowhere...

## differentiability of product (sum) of functions martini (https://math.stackexchange.com/users/15379/martini), Can we always multiply some function that is not differentiable everywhere with function that is to obtain differentiable product?, URL (version:...

 It should be "the entire CV curve is under the EPE curve" according to Fig. 5.9. ## update on Jul. 24, 2018 This typo has been confirmed by the...