Compară metode
Examinează metodele selectate una lângă alta; rândurile care diferă sunt evidențiate.
| MCMC cu date lipsă× | Eșantionarea Gibbs× | |
|---|---|---|
| Domeniu | Bayesian | Bayesian |
| Familie | Bayesian methods | Bayesian methods |
| Anul apariției≠ | 1987 | 1984 |
| Autorul original≠ | Tanner & Wong (data augmentation); extended by Gelfand & Smith, Rubin | Stuart Geman & Donald Geman |
| Tip≠ | Bayesian computational method | MCMC sampling algorithm |
| Sursa seminală≠ | Little, R. J. A. & Rubin, D. B. (2002). Statistical Analysis with Missing Data (2nd ed.). Wiley. ISBN: 978-0471183860 | Geman, S. & Geman, D. (1984). Stochastic relaxation, Gibbs distributions, and the Bayesian restoration of images. IEEE Transactions on Pattern Analysis and Machine Intelligence, 6(6), 721-741. DOI ↗ |
| Denumiri alternative | MCMC missing data, data augmentation MCMC, Bayesian multiple imputation, MCMC imputation | Gibbs sampler, coordinate-wise MCMC, systematic scan Gibbs, blocked Gibbs sampling |
| Înrudite≠ | 6 | 5 |
| Rezumat≠ | MCMC with missing data is a Bayesian computational strategy that treats unobserved values as additional unknown parameters. By alternating between sampling the missing values from their predictive distribution and sampling the model parameters from their posterior, the algorithm produces a valid joint posterior that fully accounts for uncertainty introduced by the missingness. | Gibbs sampling is a Markov chain Monte Carlo algorithm that approximates a high-dimensional posterior distribution by repeatedly drawing each parameter from its full conditional distribution given all other parameters and the data. Because each draw is exact from a conditional — not a proposal that may be rejected — the sampler is efficient when those conditionals are available in closed form. |
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