Complete Ex8 - Anomaly Detection and Recommender Systems

Part 1: Estimate Gaussian Parameters [ estimateGaussian.m ]
Part 2: Select Threshold [ selectThreshold.m ]
Part 3: Collaborative Filtering Cost [ cofiCostFunc.m ]
Part 4: Collaborative Filtering Gradient [ cofiCostFunc.m ]
Part 5: Regularized Cost [ cofiCostFunc.m ]
Part 6: Regularized Gradient [ cofiCostFunc.m ]