Calculate the counter-clock-wise angle degree between two vectors

Execute python code using ./

Step1: add #!/usr/local/bin/python in the first line of the code

Step2: in the bash, type chmod +x myscript.py

Step3: type ./myscript.py to execute the python code

"[[0] * n] * m" is not equal to "[[0 for i in range(n)] for j in range(m)]"

Use Jazzy to generate Swift documentation.

Format:

• /// description
• - parameter param: description
• - returns: xxxxxxx

run Jazzy

$ jazzy --min-acl internal --swift-version 2.1

Embed images to latex

\graphicspath{ {pic/} } % The folder containing images.
\includegraphics[scale=0.5]{imageName} % Embed a image.

CS229 Machine Learning - 3 (Linear regression, Probabilistic interpretation, Logistic regression, Newton's method)

Outline:
- Linear regression
- Probabilistic interpretation
- Logistic regression
- Newton's method