## 2017년 9월 27일 수요일

### Intuition sigmoid function

Nebo - Sigmoid - Page 1

Sigmoid function
I have real value
but I want to change it into probability
Probability should be from O to 1
Look like below

If we have function like above, we can change any real value to probability

$\frac{1}{1+{e}^{x}}$

Now we got convert function
Let's call it sigmoid function

$sigmoid\left(x\right)=\frac{1}{1+{e}^{-\left(x\right)}}=\frac{{e}^{x}}{{e}^{x}+1}$