Compara mètodes

	Model de Mescla Gaussiana Regularitzat	Agrupació K-means
Camp	Aprenentatge automàtic	Aprenentatge automàtic
Família	Machine learning	Machine learning
Any d'origen	2000s–2010s	1967 (formalized 1982)
Autor original	Fraley, C. & Raftery, A. E. (regularization formalized); sklearn team (practical reg_covar parameter)	MacQueen, J. B.; Lloyd, S. P.
Tipus	Probabilistic clustering with regularization	Partitional clustering
Font seminal	Fraley, C. & Raftery, A. E. (2002). Model-based clustering, discriminant analysis, and density estimation. Journal of the American Statistical Association, 97(458), 611–631.	Lloyd, S. P. (1982). Least squares quantization in PCM. IEEE Transactions on Information Theory, 28(2), 129–137.
Àlies	Regularized GMM, GMM with covariance regularization, stabilized Gaussian mixture model, penalized GMM	k-means clustering, Lloyd's algorithm, k-means partitioning, hard k-means
Relacionats	5	4
Resum	A Regularized Gaussian Mixture Model (GMM) adds a small positive constant to the diagonal of each component covariance matrix during the Expectation-Maximization algorithm, preventing singular or near-singular matrices that cause numerical failures when the data are sparse, high-dimensional, or contain near-duplicate observations.	K-means is a classic unsupervised partitional clustering algorithm that divides a dataset into K non-overlapping groups by iteratively assigning each observation to its nearest centroid and updating centroids as the mean of their assigned points. It is one of the most widely used exploratory tools in machine learning and data analysis.