Anomaly detection

Density Estimation

Problem Motivation

Gaussian Distribution

Algorithm

Building an Anomaly Detection System

Developing and evaluating an anomaly detection system

Anomaly detection vs. supervised learning

Choosing what features to use

Multivariate Gaussian distribution

Multivariate Gaussian distribution

Anomaly detection using the multivariate Gaussian distribution

Review

Recommender Systems

Predicting Movie Ratings

Problem formulation

Content-based recommendations

Collaborative filtering

Collaborative filtering

Collaborative filtering Algorithm

Low Rank Matrix Factorization

Vectorization: Low rank matrix factorization

Implementational detail: Mean normalization

Review