Σύγκριση μεθόδων

	Ανάλυση Παραγόντων	Ομαδοποίηση K-means	Variational Autoencoder
Πεδίο	Ερευνητική Στατιστική	Μηχανική Μάθηση	Βαθιά Μάθηση
Οικογένεια	Process / pipeline	Machine learning	Machine learning
Έτος προέλευσης	1931	1967 (formalized 1982)	2014
Δημιουργός	Louis Leon Thurstone	MacQueen, J. B.; Lloyd, S. P.	Kingma, D. P. & Welling, M.
Τύπος	Method	Partitional clustering	Deep generative latent-variable model (encoder–decoder)
Θεμελιώδης πηγή	Thurstone, L. L. (1947). Multiple Factor Analysis. University of Chicago Press.	Lloyd, S. P. (1982). Least squares quantization in PCM. IEEE Transactions on Information Theory, 28(2), 129–137.	Kingma, D. P. & Welling, M. (2014). Auto-Encoding Variational Bayes. International Conference on Learning Representations (ICLR).
Εναλλακτικές ονομασίες	EFA, CFA, latent variable modeling	k-means clustering, Lloyd's algorithm, k-means partitioning, hard k-means	Değişkensel Otokodlayıcı (VAE), VAE, auto-encoding variational Bayes, deep latent variable model
Συναφείς	3	4	5
Σύνοψη	Factor analysis is a statistical technique for identifying latent (unobserved) dimensions underlying observed variables, developed by Louis Leon Thurstone in the 1930s and formalized by Jöreskog (1969). Exploratory factor analysis (EFA) discovers unknown factor structure from data; confirmatory factor analysis (CFA) tests hypothesized relationships between observed and latent variables. Essential in psychometrics (test development), organizational research (measuring constructs like leadership style), and biomedicine (identifying disease subtypes), factor analysis reduces dimensionality while revealing conceptual organization in multivariate data.	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.	The Variational Autoencoder (VAE) is a deep generative latent-variable model, introduced by Diederik Kingma and Max Welling in 2014, that encodes data as a probability distribution in a latent space and samples from that distribution to generate new examples. It is used for data generation, anomaly detection, and feature learning.