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| Clustering gerarchico robusto× | Modellizzazione per miscele× | |
|---|---|---|
| Campo | Statistica | Statistica |
| Famiglia | Latent structure | Latent structure |
| Anno di origine≠ | 1990 | 1894 |
| Ideatore≠ | Kaufman & Rousseeuw (building on Ward, 1963 and others) | Karl Pearson |
| Tipo≠ | Robust unsupervised clustering | Latent variable / density estimation |
| Fonte seminale≠ | Kaufman, L. & Rousseeuw, P. J. (1990). Finding Groups in Data: An Introduction to Cluster Analysis. Wiley. ISBN: 978-0471878766 | McLachlan, G. J. & Peel, D. (2000). Finite Mixture Models. Wiley-Interscience. ISBN: 978-0471006268 |
| Alias | robust agglomerative clustering, outlier-resistant hierarchical clustering, robust linkage clustering, RHC | finite mixture model, mixture distribution model, FMM, model-based clustering |
| Correlati≠ | 5 | 6 |
| Sintesi≠ | Robust hierarchical clustering extends classical agglomerative or divisive hierarchical clustering by replacing sensitive distance measures and linkage criteria with outlier-resistant alternatives, preserving cluster structure even when data contain anomalous observations or heavy-tailed distributions. | Mixture modeling assumes that a population is composed of K unobserved subpopulations, each described by its own probability distribution. The observed data are treated as draws from a weighted combination of these component distributions. It provides a principled, model-based alternative to ad hoc clustering and supports formal comparison of solutions with different numbers of components. |
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