Anomaly Detection
Density Estimation
Anomaly Detection
Gaussian distribution
- e.g. Aircrafts engines features: heat generated, vibration intensity
- e.g. servers: memory usage, cpu load, cpu load / network traffic
Building Anomaly Detection system
Developing and Evaluating
vs. Supervised Learning
What Features to Use
Multivariate Gaussian Distribution
Recommender Systems
Content Based Recommendations
- r(i, j): 1 if user j has rated movie i
- y(i, j): rating user j to movie i
Collaborative Filtering
- Symmetry breaking
Low-rank Matrix Factorization