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Algoritma EM (Expectation-Maximization)×Imputasi Berganda×
BidangStatistikStatistik
KeluargaMachine learningProcess / pipeline
Tahun asal19771987
PengasasDempster, Laird & RubinDonald B. Rubin
JenisIterative optimization algorithmMissing-data handling procedure
Sumber perintisDempster, A. P., Laird, N. M., & Rubin, D. B. (1977). Maximum likelihood from incomplete data via the EM algorithm. Journal of the Royal Statistical Society: Series B, 39(1), 1–38. DOI ↗Rubin, D.B. (1987). Multiple Imputation for Nonresponse in Surveys. Wiley. DOI ↗
AliasEM, Expectation-Maximization, Maximum Likelihood via Incomplete Data, BM AlgoritmasıMICE, Multivariate Imputation by Chained Equations, Çoklu Atama (Multiple Imputation — MICE)
Berkaitan21
RingkasanThe Expectation-Maximization (EM) algorithm is an iterative optimization procedure for finding maximum likelihood or maximum a posteriori estimates of parameters in statistical models with latent variables or missing data. Introduced by Dempster, Laird, and Rubin in their landmark 1977 paper, EM alternates between computing the expected complete-data log-likelihood (E-step) and maximizing it with respect to the parameters (M-step), guaranteeing monotone non-decreasing likelihood at each iteration.Multiple Imputation (MI), formally introduced by Donald B. Rubin in 1987, is a principled statistical procedure for handling missing data. Rather than replacing each missing value once, MI fills the gaps m times — each time drawing plausible values from the posterior predictive distribution of the missing data — producing m complete datasets. Each dataset is analysed independently, and the results are combined into a single set of estimates using Rubin's pooling rules. The MICE variant (Multivariate Imputation by Chained Equations), popularised by van Buuren and Groothuis-Oudshoorn (2011), extends the approach to mixed variable types by imputing each variable in turn through a sequence of conditional regression models.
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ScholarGateBandingkan kaedah: EM Algorithm · Multiple Imputation. Dicapai 2026-06-15 daripada https://scholargate.app/ms/compare