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| Analiza klas ukrytych (LCA)× | Analiza skupień× | |
|---|---|---|
| Dziedzina | Statystyka | Statystyka |
| Rodzina | Latent structure | Latent structure |
| Rok powstania≠ | 1950s–1968 | 1939–1967 |
| Twórca≠ | Paul F. Lazarsfeld | Robert C. Tryon (early development); Ward (1963) for hierarchical; MacQueen (1967) for k-means |
| Typ≠ | Latent variable / person-centered classification | Unsupervised classification / grouping |
| Źródło pierwotne≠ | Goodman, L. A. (1974). Exploratory latent structure analysis using both identifiable and unidentifiable models. Biometrika, 61(2), 215–231. DOI ↗ | Everitt, B. S., Landau, S., Leese, M. & Stahl, D. (2011). Cluster Analysis (5th ed.). Wiley. ISBN: 978-0470749913 |
| Inne nazwy | LCA, latent class model, latent categorical analysis, finite mixture of multinomials | clustering, unsupervised classification, data clustering, numerical taxonomy |
| Pokrewne≠ | 6 | 5 |
| 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. | Cluster analysis is a family of unsupervised multivariate techniques that partition a set of objects or observations into internally homogeneous, mutually distinct groups — clusters — based on measured characteristics, without any prior knowledge of group membership. It is widely used in market segmentation, bioinformatics, psychology, and social science to reveal natural groupings in data. |
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