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| Suy diễn biến phân với dữ liệu thiếu× | Gibbs Sampling với Dữ liệu Thiếu× | |
|---|---|---|
| Lĩnh vực | Bayes | Bayes |
| Họ | Bayesian methods | Bayesian methods |
| Năm ra đời≠ | 1994–2008 | 1987–1990 |
| Người khởi xướng≠ | Ghahramani & Jordan; Wainwright & Jordan (formal foundations) | Tanner & Wong (data augmentation), Gelfand & Smith (Gibbs sampler) |
| Loại≠ | Approximate Bayesian inference | Bayesian computational method |
| Công trình gốc≠ | Ghahramani, Z. & Jordan, M. I. (1994). Supervised learning from incomplete data via an EM approach. In Cowan, J. D., Tesauro, G. & Alspector, J. (Eds.), Advances in Neural Information Processing Systems 6 (pp. 120–127). Morgan Kaufmann. link ↗ | Tanner, M. A. & Wong, W. H. (1987). The calculation of posterior distributions by data augmentation. Journal of the American Statistical Association, 82(398), 528–540. DOI ↗ |
| Tên gọi khác | VI with missing data, variational EM with missing data, VB missing data, mean-field VI for incomplete data | data augmentation Gibbs sampler, Gibbs sampler with data augmentation, Bayesian imputation via Gibbs sampling, MCMC missing data imputation |
| Liên quan≠ | 4 | 6 |
| Tóm tắt≠ | Variational inference with missing data is a scalable Bayesian approach that simultaneously approximates the posterior over latent variables and model parameters while imputing missing observations. Instead of integrating over all possible values of the missing entries exactly, it posits a tractable approximate distribution and optimises it to be as close as possible to the true joint posterior, yielding fast, principled inference even in high-dimensional incomplete datasets. | Gibbs sampling with missing data treats unobserved values as additional unknowns alongside model parameters and samples all of them jointly within a Markov chain Monte Carlo loop. The method alternates between drawing the missing values from their conditional distribution given the parameters and drawing the parameters from their conditional distribution given the completed data, producing a posterior over both simultaneously. |
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