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检索条件"主题词=em algorithm"
4566 条 记 录,以下是4471-4480 订阅
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APPLICATIONS OF THE EXPECTATION-MAXIMIZATION algorithm TO QUANTAL ANALYSIS OF POSTSYNAPTIC POTENTIALS
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JOURNAL OF NEUROSCIENCE METHODS 1989年 第3期30卷 231-245页
作者: KULLMANN, DM University Laboratory of Physiology Oxford UK
The expectation-maximization (em) algorithm is a robust method for maximum likelihood estimation of the parameters of an incompletely sampled distribution. It has been used to resolve the trial-to-trial amplitude fluc... 详细信息
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BAYESIAN-ESTIMATION METHODS FOR CATEGORICAL-DATA WITH MISCLASSIFICATIONS
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COMMUNICATIONS IN STATISTICS-THEORY AND METHODS 1989年 第8期18卷 2935-2954页
作者: GENG, Z ASANO, C KYUSHU UNIV FUNDAMENTAL INFORMAT SCI RES INSTFUKUOKA 812JAPAN
This article considers Bayesian estimation methods for categorical data with misclassifications. To adjust for misclassification, double sampling schemes are utilized. Observations are represented in a contingency tab... 详细信息
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MODEL-BASED BAYESIAN METHODS FOR ESTIMATING CELL PROPORTIONS IN CROSS-CLASSIFICATION TABLES HAVING ORDERED CATEGORIES
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COMPUTATIONAL STATISTICS & DATA ANALYSIS 1989年 第3期7卷 245-258页
作者: AGRESTI, A CHUANG, C UNIV FLORIDA DEPT STATGAINESVILLEFL 32611 UPJOHN CO BIOSTAT UNITKALAMAZOOMI 49001
Bayesian methods are suggested for estimating proportions in the cells of cross-classification tables having at least one classification with ordered categories. These methods utilize models for cell proportions that ... 详细信息
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ESTIMATING MEAN CONCENTRATIONS UNDER TRANSFORMATION FOR ENVIRONMENTAL DATA WITH DETECTION LIMITS
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TECHNOMETRICS 1989年 第3期31卷 347-356页
作者: SHUMWAY, RH AZARI, AS JOHNSON, P Division of Statistics University of California Davis CA 95616 United States
The reporting procedures for potentially toxic pollutants are complicated by the fact that concentrations are measured using small samples that include a number of observations lying below some detection limit. Furthe... 详细信息
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A MIXTURE MODEL FOR DISTRIBUTIONS OF CORRELATION-COEFFICIENTS
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PSYCHOMETRIKA 1989年 第3期54卷 523-530页
作者: THOMAS, H PENN STATE UNIV 513 MOORE BLDGUNIVERSITY PKPA 16802 USA
An old problem in personnel psychology is to characterize distributions of test validity correlation coefficients. The proposed model views histograms of correlation coefficients as observations from a mixture distrib... 详细信息
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EXPLORATORY LONGITUDINAL FACTOR-ANALYSIS IN MULTIPLE POPULATIONS
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PSYCHOMETRIKA 1989年 第2期54卷 261-281页
作者: TISAK, J MEREDITH, W UNIV CALIF BERKELEY BERKELEYCA 94720
For multiple populatios, a longtidinal factor analytic model which is entirely exploratory, that is, no explicit identification constraints, is proposed. Factorial collapse and period/practice effects are allowed. An ... 详细信息
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An Analysis of Density-Dependent Viability Selection
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Quarterly Publications of the American Statistical Association 1989年 第407期84卷 662-668页
作者: Williams, Christopher J. Anderson, Wyatt W. Brown, Celeste J. Arnold, Jonathan Instructor Department of Medical Genetics Indiana University Medical School Indianapolis IN 46223. Professor Department of Genetics University of Georgia Athens GA 30602. Postdoctoral Fellow Department of Biochemistry Indiana University Medical School Indianapolis IN 46223. Associate Professor Departments of Statistics and Genetics University of Georgia Athens GA 30602
Generalized linear modeling techniques and resistant fitting methods were used to analyze the results of two experiments to test for density-dependent viability selection on chromosomal variants inDrosophila pseudoobs... 详细信息
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Advances in Record-Linkage Methodology as Applied to matching the 1985 Census of Tampa, Florida
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Journal of the American Statistical Association 1989年 第406期84卷 414-414页
作者: Jaro, Matthew A. Director of Research and Development System Automation Corporation Silver Spring MD 20910
A test census of Tampa, Florida and an independent postenumeration survey (PES) were conducted by the U.S. Census Bureau in 1985. The PES was a stratified block sample with heavy emphasis placed on hard-to-count popul... 详细信息
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Joint Estimation of Incidence and Diagnostic Error Rates From Irregular Longitudinal Data
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Journal of the American Statistical Association 1989年 第408期84卷 972-972页
作者: Espeland, Mark A. Plait, Orah S. Gallagher, Dianne Associate Professor Department of Public Health Sciences Bowman Gray School of Medicine Winston-Salem NC 27103. Associate Professor Department of Pediatrics Harvard Medical School Boston MA 02115. Research Scientist New England Research Institute Watertown MA 02172
Longitudinal studies often involve the repeated diagnosis across time of each patient's status with respect to a progressive categorical process. When the occurrence of a change m status is not readily apparent, t... 详细信息
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Robust Statistical Modeling Using thetDistribution
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Quarterly Publications of the American Statistical Association 1989年 第408期84卷 881-896页
Thetdistribution provides a useful extension of the normal for statistical modeling of data sets involving errors with longer-than-normal tails. An analytical strategy based on maximum likelihood for a general model w... 详细信息
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