Andrew Ng's Machine Learning Class Projects  Description:   Ex1 - Gradient Descent, Newton's Method, Linear Regression  Ex2 - Sigmoid Kernels  Ex3 - Logistic Regression Implementation  Ex4 - Neural Networks implementation for Digit Recognition  Ex5 - Regularized Linear Regression, Polynomial Regression  Ex6 - SVM (Kernel implementation) for Spam Classification  Ex8 - Recommender System (Collaborative Filtering) and Anomaly Detection