NTUT ML Topic: Dimension Reduction Principal Components Analysis (PCA) ref: StatQuest PCA clearly explained (2015) StatQuest: Principal Component Analysis (PCA), Step-by-Step Multidimensional Scaling (MDS) Linear Discriminant Analysis (LDA) ref: StatQuest: Linear Discriminant Analysis (LDA) clearly explained. Canonical Correlation Analysis (CCA) Laplacian Eigenmaps t-Distributed Stochastic Neighbor Embedding (t-SNE) ref: StatQuest: t-SNE, Clearly Explained Topic: Clustering k-Means ref: StatQuest: K-means clustering Expectation-Maximization (EM)