Distances
Mahalinobis
Clusters
kmeans
dbscan
densityclust
spectral clustering
Laplacian matrix
Classification
cross-validation
Components
Decomposing signals in components (matrix factorization problems)
PCA
ICA
NMF
MDS
Kernel
Kernel trick
Regression
GLM
Loess
Lasso
Optimization
Kernel trick
Manifold
Manifold learning, manifold-based tools
ISOMAP
Local Linear Embedding (LLE)
Network
graph Laplacian matrix