search

szcf-weiya / ESL-CN

The Elements of Statistical Learning (ESL)的中文翻译、代码实现及其习题解答。
https://esl.hohoweiya.xyz
GNU General Public License v3.0
2.4k stars 588 forks source link

SLS Ex. 2.11 #178

Closed szcf-weiya closed 5 years ago

szcf-weiya commented 5 years ago

image image

szcf-weiya commented 5 years ago

PNG image

szcf-weiya commented 5 years ago

Remarks

  1. optimization of a function of two variables
  2. Definition of convex optimization (refer to Boyd, S., & Vandenberghe, L. (2004). Convex optimization. Cambridge university press.) image
bxdd commented 3 years ago

@szcf-weiya hi, 这一步不等号是不是写反了（均值不等式应该是反过来？）？ image

szcf-weiya commented 3 years ago

啊对，谢谢！可能当时写快了吧，这里本来就是要证小于等于