Porovnat metody
Prohlédněte si vybrané metody vedle sebe; řádky, které se liší, jsou zvýrazněny.
| Latent Class Analysis (LCA)× | Diskriminační analýza× | |
|---|---|---|
| Obor | Statistika | Statistika |
| Rodina | Latent structure | Latent structure |
| Rok vzniku≠ | 1950s–1968 | 1936 |
| Tvůrce≠ | Paul F. Lazarsfeld | Ronald A. Fisher |
| Typ≠ | Latent variable / person-centered classification | Supervised classification and dimension reduction |
| Původní zdroj≠ | Goodman, L. A. (1974). Exploratory latent structure analysis using both identifiable and unidentifiable models. Biometrika, 61(2), 215–231. DOI ↗ | Fisher, R. A. (1936). The use of multiple measurements in taxonomic problems. Annals of Eugenics, 7(2), 179–188. DOI ↗ |
| Další názvy | LCA, latent class model, latent categorical analysis, finite mixture of multinomials | LDA, Fisher discriminant analysis, discriminant function analysis, canonical discriminant analysis |
| Příbuzné≠ | 6 | 4 |
| Shrnutí≠ | Latent class analysis identifies unobserved subgroups — latent classes — within a population by finding patterns of responses across a set of categorical observed indicators. It is the categorical-variable counterpart of cluster analysis, but grounded in an explicit probabilistic model, and is widely used in social, health, and behavioral sciences to discover typologies in survey or diagnostic data. | Discriminant analysis finds linear combinations of predictor variables that best separate two or more known groups. It is used both to understand which predictors distinguish the groups and to classify new observations into those groups with minimum error. |
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