Progress Unsupervised ML Complete & Continue Next Lesson Learn More Chapter 1 - Linear Models 3 Lessons Hard Clustering: K-means and Hierarchical The Covariance Matrix Soft Clustering: Gaussian Mixture Models Chapter 2 - Dimensionality Reduction 3 Lessons Principal Component Analysis (PCA) Singular Value Decomposition (SVD) SVD Lab Unsupervised ML Complete & Continue Next Lesson Learn More Chapter 2 - Dimensionality Reduction Principal Component Analysis (PCA)