[Stanford] Convex Optimization from Stanford

谢谢你啊~~知道了~~

囧 我以为开课会有邮件通知 结果看到此贴 才知道已经开课…… 擦

错了一题

Dual cones and generalized inequality 的那个quiz没明白，求解释～～～

Consider the cone K={(x1,x2)∣0≤x1≤x2}⊆R2. Which of the following are true?
(1,3)⪯K(3,4)
(−1,2)⪰K∗0

突然发现，这个应该石两周的作业。。。

We have released the units "Introduction" and "Convex Sets", and encourage you to get started looking through this material. You should finish watching the videos in Introduction by 1/26/2014, and finish watching the videos on Convex Sets by 2/2/2014. The homework on Convex Sets is due at midnight PST on Sunday night 2/2/2014 (8:00 UTC on Monday 2/3/2014).

Week 1 done.

Quiz有些马虎做错了。第一次上优化有关的课，感觉还挺有意思。

作业错了两题 智商拙计。。

想问下第一个和第三个怎么确定是convex的？

EroicaCMCS 发表于 2014-2-3 13:45
作业错了两题 智商拙计。。

Ef(x)=\sum_{i=1}^n p_i*f(a_i)
所以, \alpha \leq Ef(x) \leq \beta 就等于一个线性不等式 \alpha \leq \sum_{i=1}^n p_i*f(a_i) \leq \beta

第三个同样，把右边移到左边去，得到线性不等式
\sum_{i=1}^n p_i * (|x^3| - \alpha |a_i|) \leq 0

不知道能不能看懂。。。

我来晚了。。我也要跟