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| Analisi Fattoriale Robusta× | Analisi delle Componenti Principali× | |
|---|---|---|
| Campo≠ | Statistica | Apprendimento automatico |
| Famiglia≠ | Regression model | Machine learning |
| Anno di origine≠ | 2003 | 2002 |
| Ideatore≠ | Pison, Rousseeuw, Filzmoser & Croux | Jolliffe, I.T. (textbook); Pearson & Hotelling (origins) |
| Tipo≠ | Robust latent-factor model | Unsupervised dimensionality reduction |
| Fonte seminale≠ | Pison, G., Rousseeuw, P. J., Filzmoser, P., & Croux, C. (2003). Robust factor analysis. Journal of Multivariate Analysis, 84(1), 145-172. DOI ↗ | Jolliffe, I.T. (2002). Principal Component Analysis (2nd ed.). Springer. DOI ↗ |
| Alias | robust factor analysis, outlier-resistant factor analysis, MCD-based factor analysis, Robust Faktör Analizi | Temel Bileşenler Analizi (PCA), PCA, principal components analysis, Karhunen-Loève transform |
| Correlati≠ | 5 | 3 |
| Sintesi≠ | Robust Factor Analysis recovers the latent factor structure of multivariate continuous data while resisting the distorting pull of outliers. Introduced by Pison, Rousseeuw, Filzmoser and Croux (2003), it replaces the classical sample covariance with a robust estimator such as the Minimum Covariance Determinant (MCD) or an S-estimator before extracting factors. | Principal Component Analysis (PCA) is an unsupervised dimensionality-reduction method — given its modern textbook treatment by Ian Jolliffe (2002) — that compresses high-dimensional data into fewer dimensions while preserving the maximum possible variance. It re-expresses correlated variables as a small set of uncorrelated principal components ordered by how much of the data's variation each one captures. |
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