三篇很好的关于Gradient Descent Method的Tutorial，适合初学者在阅读经典的书籍前对Gradient Descent Method先有个大概的了解。
来自Indian Institute of Science E0 270 Machine Learning
课程链接:drona.csa.iisc.ernet.in/~e0270/Jan-2015/
tutorial：
1.（Unconstrained Optimization-Basic Gradient Descent)
drona.csa.iisc.ernet.in/~e0270/Jan-2015/Tutorials/lecture-notes-1.pdf
2.(Newton Method and KKT)
drona.csa.iisc.ernet.in/~e0270/Jan-2015/Tutorials/lecture-notes-2.pdf
3.(Projected Gradient Method)
drona.csa.iisc.ernet.in/~e0270/Jan-2015/Tutorials/lecture-notes-3.pdf
