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检索条件"主题词=expectation-maximization algorithm"
625 条 记 录,以下是171-180 订阅
排序:
A varying-coefficient generalized odds rate model with time-varying exposure: An application to fitness and cardiovascular disease mortality
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BIOMETRICS 2019年 第3期75卷 853-863页
作者: Zhou, Jie Zhang, Jiajia Mclain, Alexander C. Lu, Wenbin Sui, Xuemei Hardin, James W. Univ South Carolina Dept Epidemiol & Biostat Columbia SC 29208 USA North Carolina State Univ Dept Stat Raleigh NC USA Univ South Carolina Dept Exercise Columbia SC 29208 USA
Varying-coefficient models have become a common tool to determine whether and how the association between an exposure and an outcome changes over a continuous measure. These models are complicated when the exposure it... 详细信息
来源: 评论
Noise can speed backpropagation learning and deep bidirectional pretraining
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NEURAL NETWORKS 2020年 129卷 359-384页
作者: Kosko, Bart Audhkhasi, Kartik Osoba, Osonde Univ Southern Calif Dept Elect & Comp Engn Signal & Image Proc Inst Los Angeles CA 90089 USA RAND Corp Santa Monica CA 90401 USA Google Inc New York NY USA
We show that the backpropagation algorithm is a special case of the generalized expectation-maximization (EM) algorithm for iterative maximum likelihood estimation. We then apply the recent result that carefully chose... 详细信息
来源: 评论
Survival analysis for a new compounded bivariate failure time distribution in shock and competing risk models via an EM algorithm
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COMMUNICATIONS IN STATISTICS-THEORY AND METHODS 2020年 第21期49卷 5123-5153页
作者: Shoaee, Shirin Khorram, Esmaile Shahid Beheshti Univ Fac Math Sci Dept Actuarial Sci Tehran Iran Amirkabir Univ Technol Fac Math & Comp Sci Dept Stat Tehran Iran
In this paper, two bivariate models based on the proposed methods of Marshall and Olkin are introduced. In the first model, the new bivariate distribution is presented based on the proposed method of Marshall and Olki... 详细信息
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Estimating random-intercept models on data streams
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COMPUTATIONAL STATISTICS & DATA ANALYSIS 2016年 104卷 169-182页
作者: Ippel, L. Kaptein, M. C. Vermunt, J. K. Tilburg Univ Warandelaan 2POB 90153 NL-5000 LE Tilburg Netherlands
Multilevel models are often used for the analysis of grouped data. Grouped data occur for instance when estimating the performance of pupils nested within schools or analyzing multiple observations nested within indiv... 详细信息
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An EM approach to multiple-access interference mitigation in asynchronous slow FHSS systems
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IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2008年 第7期7卷 2661-2670页
作者: Tan, Xing Shea, John M. Univ Florida Dept Elect & Comp Engn Gainesville FL 32611 USA
In this paper, we apply the EM algorithm for mitigation of multi-access interference (MAI) in asynchronous slow frequency-hop spread spectrum (FHSS) systems that employ binary frequency-shift keying (BFSK) modulation.... 详细信息
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Noise-boosted bidirectional backpropagation and adversarial learning
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NEURAL NETWORKS 2019年 120卷 9-31页
作者: Adigun, Olaoluwa Kosko, Bart Univ Southern Calif Dept Elect & Comp Engn Signal & Image Proc Inst Los Angeles CA 90089 USA
Bidirectional backpropagation trains a neural network with backpropagation in both the backward and forward directions using the same synaptic weights. Special injected noise can then improve the algorithm's train... 详细信息
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Maximum likelihood estimation of Gaussian models with missing data-Eight equivalent formulations
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AUTOMATICA 2012年 第9期48卷 1955-1962页
作者: Hansson, Anders Wallin, Ragnar Linkoping Univ Div Automat Control SE-58183 Linkoping Sweden
In this paper we derive the maximum likelihood problem for missing data from a Gaussian model. We present in total eight different equivalent formulations of the resulting optimization problem, four out of which are n... 详细信息
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Genetic-based EM algorithm to improve the robustness of Gaussian mixture models for damage detection in bridges
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STRUCTURAL CONTROL & HEALTH MONITORING 2017年 第3期24卷 1-9页
作者: Santos, Adam Figueiredo, Eloi Silva, Moises Santos, Reginaldo Sales, Claudomiro Costa, Joao C. W. A. Fed Univ Para Appl Electromagnetism Lab R Augusto CorreaGuama 01 BR-66075110 Belem Para Brazil Univ Lusofona Humanidades & Tecnol Fac Engn Campo Grande 376 P-1749024 Lisbon Portugal
During the service life of bridges, the bridge management systems (BMSs) seek to handle all performed assessment activities by controlling regular inspections, evaluations, and maintenance of these structures. However... 详细信息
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Statistical inference for masked interval data with Weibull distribution under simple step-stress test and tampered failure rate model
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PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY 2017年 第6期231卷 654-665页
作者: Azizi, Fariba Haghighi, Firoozeh Ghadiri, Elahe Torabi, Leila Univ Tehran Dept Math Stat & Comp Sci Tehran Iran
In this article, we consider the planning of simple step-stress life test in the presence of competing risks with the possibility of masked causes of failure and interval censoring. It is assumed that the competing ri... 详细信息
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Frequency Domain Identification of Multivariable Model for Aero-Engine using an Improved Maximum Likelihood Method
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INTERNATIONAL JOURNAL OF TURBO & JET-ENGINES 2015年 第3期32卷 247-255页
作者: Liu, Nan Huang, Jinquan Lu, Feng Pan, Muxuan Nanjing Univ Aeronaut & Astronaut Jiangsu Prov Key Lab Aerosp Power Syst Nanjing 210016 Peoples R China Collaborat Innovat Ctr Adv Aeroengine Beijing 100191 Peoples R China Commercial Aircraft Corp China Shanghai Aircraft Design & Res Inst Shanghai 200232 Peoples R China
For the linear modeling problem of multivariable system of aero-engine, considering the coupling between parameters, a multivariable maximum likelihood (ML) estimation method is researched. An improved expectation-max... 详细信息
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