Porovnat metody
Prohlédněte si vybrané metody vedle sebe; řádky, které se liší, jsou zvýrazněny.
| Lineární diskriminační analýza (LDA× | Analýza hlavních komponent× | |
|---|---|---|
| Obor≠ | Statistika | Strojové učení |
| Rodina≠ | Hypothesis test | Machine learning |
| Rok vzniku≠ | 1936 | 2002 |
| Tvůrce≠ | Ronald A. Fisher | Jolliffe, I.T. (textbook); Pearson & Hotelling (origins) |
| Typ≠ | Parametric linear classifier / dimensionality reduction | Unsupervised dimensionality reduction |
| Původní zdroj≠ | Fisher, R.A. (1936). The Use of Multiple Measurements in Taxonomic Problems. Annals of Eugenics, 7(2), 179–188. DOI ↗ | Jolliffe, I.T. (2002). Principal Component Analysis (2nd ed.). Springer. DOI ↗ |
| Další názvy≠ | LDA, Fisher's LDA, Fisher's linear discriminant, discriminant function analysis | Temel Bileşenler Analizi (PCA), PCA, principal components analysis, Karhunen-Loève transform |
| Příbuzné≠ | 7 | 3 |
| Shrnutí≠ | Linear Discriminant Analysis (LDA) is a parametric supervised classification method that finds the linear combination of continuous predictors that best separates two or more predefined groups. Introduced by Ronald A. Fisher in his landmark 1936 paper on taxonomic measurements, it simultaneously serves as a classifier and a dimensionality-reduction tool, and can be understood as the classification-oriented counterpart of MANOVA. | 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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