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| Analiza klas ukrytych (LCA)× | Analiza dyskryminacyjna× | |
|---|---|---|
| Dziedzina | Statystyka | Statystyka |
| Rodzina | Latent structure | Latent structure |
| Rok powstania≠ | 1950s–1968 | 1936 |
| Twórca≠ | Paul F. Lazarsfeld | Ronald A. Fisher |
| Typ≠ | Latent variable / person-centered classification | Supervised classification and dimension reduction |
| Źródło pierwotne≠ | 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 ↗ |
| Inne nazwy | LCA, latent class model, latent categorical analysis, finite mixture of multinomials | LDA, Fisher discriminant analysis, discriminant function analysis, canonical discriminant analysis |
| Pokrewne≠ | 6 | 4 |
| Podsumowanie≠ | 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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