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Esamina i metodi selezionati fianco a fianco; le righe che differiscono sono evidenziate.
| Modello Probit Bayesiano× | Regressione Logistica Multinomiale Bayesiana× | |
|---|---|---|
| Campo | Statistica | Statistica |
| Famiglia | Regression model | Regression model |
| Anno di origine≠ | 1993 | 1966 (classical); Bayesian extensions established by 1990s |
| Ideatore≠ | Albert & Chib (data augmentation formulation) | Gelman et al. (Bayesian treatment); classical multinomial logit by Cox (1966) |
| Tipo≠ | Binary regression (Bayesian) | Bayesian classification model |
| Fonte seminale≠ | Albert, J. H., & Chib, S. (1993). Bayesian analysis of binary and polychotomous response data. Journal of the American Statistical Association, 88(422), 669-679. DOI ↗ | Gelman, A., Carlin, J. B., Stern, H. S., Dunson, D. B., Vehtari, A., & Rubin, D. B. (2013). Bayesian Data Analysis (3rd ed.). CRC Press. ISBN: 978-1439840955 |
| Alias | Bayesian probit regression, probit model with data augmentation, Gibbs sampling probit, Albert-Chib probit | Bayesian polytomous logistic regression, Bayesian multinomial logit, Bayesian softmax regression, Bayesian nominal logistic regression |
| Correlati≠ | 6 | 5 |
| Sintesi≠ | The Bayesian Probit model is a binary regression method that models the probability of a binary outcome using the normal CDF (probit link) within a Bayesian framework. It assigns prior distributions to regression coefficients and updates them with observed data, yielding a full posterior distribution rather than a single point estimate. The Albert-Chib data-augmentation algorithm makes posterior sampling computationally efficient via Gibbs sampling. | Bayesian Multinomial Logistic Regression models a nominal outcome with three or more unordered categories by placing prior distributions over the regression coefficients and updating them with data via Bayes' theorem. The result is a full posterior distribution over category probabilities for each observation, enabling principled uncertainty quantification and regularization through the prior. |
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