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检索条件"主题词=em algorithm"
4573 条 记 录,以下是241-250 订阅
排序:
THE em algorithm FOR THE QUASI-LIKELIHOOD REGRESSION-MODEL
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COMMUNICATIONS IN STATISTICS-THEORY AND METHODS 1995年 第6期24卷 1403-1430页
作者: PAIK, MC COLUMBIA UNIV SCH PUBL HLTH DIV BIOSTAT NEW YORK NY 10032 USA
The objective of this paper is to present a method which can accommodate certain types of missing data by using the quasi-likelihood function for the complete data. This method call be useful when we call make first a... 详细信息
来源: 评论
Speeding up image reconstruction methods in coded mask γ cameras using neural networks:: Application to the em algorithm
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EXPERIMENTAL ASTRONOMY 2001年 第3期11卷 207-222页
作者: Ballesteros, FJ Muro, em Luque, B Inst Nacl Tecn Aeroespacial Ctr Astrobiol Madrid 28850 Spain
When using gamma -ray coded-mask cameras, one does not get a direct image as in classical optical cameras but the correlation of the mask response with the source. Therefore the data must be mathematically treated in ... 详细信息
来源: 评论
Communication-efficient distributed em algorithm
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STATISTICAL PAPERS 2024年 第9期65卷 5575-5592页
作者: Liu, Xirui Wu, Mixia Xu, Liwen Beijing Univ Technol Sch Math Stat & Mech 100 Pingleyuan Beijing 100124 Peoples R China North China Univ Technol Coll Sci 5 Jinyuanzhuang Rd Beijing 100144 Peoples R China
The Expectation Maximization (em) algorithm is widely used in latent variable model inference. However, when data are distributed across various locations, directly applying the em algorithm can often be impractical d... 详细信息
来源: 评论
Factor Analysis with em algorithm Never Gives Improper Solutions when Sample Covariance and Initial Parameter Matrices Are Proper
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PSYCHOMETRIKA 2013年 第2期78卷 380-394页
作者: Adachi, Kohei Osaka Univ Suita Osaka 5650871 Japan
Rubin and Thayer (Psychometrika, 47:69-76, 1982) proposed the em algorithm for exploratory and confirmatory maximum likelihood factor analysis. In this paper, we prove the following fact: the em algorithm always gives... 详细信息
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CONVERGENCE BEHAVIOR OF THE em algorithm FOR THE MULTIVARIATE T-DISTRIBUTION
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COMMUNICATIONS IN STATISTICS-THEORY AND METHODS 1995年 第12期24卷 2981-3000页
作者: ARSLAN, O CONSTABLE, PDL KENT, JT UNIV LEEDS DEPT STATLEEDS LS2 9JTW YORKSHIREENGLAND
Iterative reweighting (IR) is a popular method for computing M-estimates of location and scatter in multivariate robust estimation. When the objective function comes from a scale mixture of normal distributions the it... 详细信息
来源: 评论
Convergence properties of the em algorithm in constrained parameter spaces
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CANADIAN JOURNAL OF STATISTICS-REVUE CANADIENNE DE STATISTIQUE 1999年 第3期27卷 639-648页
作者: Nettleton, D Univ Nebraska Dept Math & Stat Lincoln NE 68588 USA
The established general results on convergence properties of the em algorithm require the sequence of em parameter estimates to fall in the interior of the parameter space over which the likelihood is being maximized.... 详细信息
来源: 评论
A Hybrid em and Monte Carlo em algorithm and Its Application to Analysis of Transmission of Infectious Diseases
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BIOMETRICS 2012年 第4期68卷 1238-1249页
作者: Yang, Yang Longini, Ira M., Jr. Halloran, M. Elizabeth Obenchain, Valerie Univ Florida Dept Biostat Gainesville FL 32611 USA Univ Florida Emerging Pathogens Inst Gainesville FL USA Fred Hutchinson Canc Res Ctr Seattle WA 98109 USA Univ Washington Dept Biostat Seattle WA 98195 USA
In epidemics of infectious diseases such as influenza, an individual may have one of four possible final states: prior immune, escaped from infection, infected with symptoms, and infected asymptomatically. The exact s... 详细信息
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A comparison of multiple imputation with em algorithm and MCMC method for quality of life missing data
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QUALITY & QUANTITY 2010年 第2期44卷 277-287页
作者: Lin, Ting Hsiang Natl Taipei Univ Dept Stat Taipei 10433 Taiwan
This study investigated the performance of multiple imputations with Expectation-Maximization (em) algorithm and Monte Carlo Markov chain (MCMC) method in missing data imputation. We compared the accuracy of imputatio... 详细信息
来源: 评论
An em algorithm based on an internal list for estimating haplotype distributions of rare variants from pooled genotype data
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BMC GENETICS 2013年 第1期14卷 1-17页
作者: Kuk, Anthony Y. C. Li, Xiang Xu, Jinfeng Natl Univ Singapore Dept Stat & Appl Probabil Singapore 117546 Singapore NYU Div Biostat Dept Populat Hlth Sch Med New York NY 10016 USA
Background: Pooling is a cost effective way to collect data for genetic association studies, particularly for rare genetic variants. It is of interest to estimate the haplotype frequencies, which contain more informat... 详细信息
来源: 评论
Convergence of the em algorithm for continuous mixing distributions
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STATISTICS & PROBABILITY LETTERS 2015年 96卷 190-195页
作者: Chung, Yeojin Lindsay, Bruce G. Kookmin Univ Sch Business Adm Seoul South Korea Penn State Univ Dept Stat University Pk PA 16802 USA
Beyond the expectation-maximization (em) algorithm for vector parameters, the em for an unknown distribution function is often used in mixture models, density estimation, and signal recovery problems. We prove the con... 详细信息
来源: 评论