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检索条件"主题词=Expectation-Maximization algorithm"
621 条 记 录,以下是131-140 订阅
A generalized weighted combination test of treatment effect for clinical trials with a sequential parallel comparison design and binary endpoint
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STATISTICS IN MEDICINE 2022年 第15期41卷 2725-2744页
作者: Quan, Hui Chen, Xiaofei Luo, Junxiang Chen, Xun Sanofi Biostat & Programming 55 Corp Dr Bridgewater NJ 08807 USA Moderna Biostat & Programming Cambridge MA USA
To address the issue of a large placebo effect in certain therapeutic areas, rather than the application of the traditional gold standard parallel group placebo-controlled design, different versions of the sequential ... 详细信息
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A spatial copula interpolation in a random field with application in air pollution data
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MODELING EARTH SYSTEMS AND ENVIRONMENT 2023年 第1期9卷 175-194页
作者: Thakur, Debjoy Das, Ishapathik Chakravarty, Shubhashree Indian Inst Technol Dept Math & Stat Tirupati Andhra Pradesh India Indian Stat Inst Machine Intelligence Unit Kolkata India
Interpolating a skewed conditional spatial random field with missing data is cumbersome in the absence of Gaussianity assumptions. Copulas can capture different types of joint tail characteristics beyond the Gaussian ... 详细信息
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Hierarchical-Bayesian-Based Sparse Stochastic Configuration Networks for Construction of Prediction Intervals
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IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS 2022年 第8期33卷 3560-3571页
作者: Lu, Jun Ding, Jinliang Liu, Changxin Chai, Tianyou Northeastern Univ State Key Lab Synthet Automat Proc Ind Shenyang 110819 Liaoning Peoples R China
To address the architecture complexity and ill-posed problems of neural networks when dealing with high-dimensional data, this article presents a Bayesian-learning-based sparse stochastic configuration network (SCN) (... 详细信息
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Intergenerational mobility measurement with latent transition matrices
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JOURNAL OF ECONOMIC INEQUALITY 2023年 第1期21卷 25-45页
作者: Bavaro, Michele Tullio, Federico Univ Oxford INET Oxford England Univ Oxford Dept Social Policy & Intervent Oxford England Bank Italy DG Econ Stat & Res Rome Italy
We propose a multivariate approach for the estimation of intergenerational transition matrices. Our methodology is grounded on the assumption that individuals' social status is unobservable and must be estimated. ... 详细信息
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expectation-maximization type algorithms for direction of arrival estimation in unknown nonuniform noise
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DIGITAL SIGNAL PROCESSING 2023年 142卷
作者: Gong, Ming-yan Lyu, Bin Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China Nanjing Univ Posts & Telecommun Minist Educ Broadband Wireless Commun & Sensor Net Key Lab Nanjing 210003 Jiangsu Peoples R China
The expectation-maximization (EM) algorithm updates all of the parameter estimates simultaneously, which is not applicable to direction of arrival (DOA) estimation in unknown nonuniform noise. In this work, we present... 详细信息
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Asymmetric autoregressive models: statistical aspects and a financial application under COVID-19 pandemic
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JOURNAL OF APPLIED STATISTICS 2022年 第5期49卷 1323-1347页
作者: Liu, Yonghui Mao, Chaoxuan Leiva, Victor Liu, Shuangzhe Silva Neto, Waldemiro A. Shanghai Univ Int Business & Econ Sch Stat & Informat Shanghai Peoples R China Shanghai Lixin Univ Accounting & Finance Sch Stat & Math Shanghai Peoples R China Pontificia Univ Catolica Valparaiso Sch Ind Engn Valparaiso Chile Univ Canberra Fac Sci & Technol Canberra ACT Australia Univ Fed Goias Fac Adm Accounting & Econ Goiania Go Brazil
In the present study, we provide a motivating example with a financial application under COVID-19 pandemic to investigate autoregressive (AR) modeling and its diagnostics based on asymmetric distributions. The objecti... 详细信息
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Two-Component Mixture Model in the Presence of Covariates
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JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION 2022年 第540期117卷 1820-1834页
作者: Deb, Nabarun Saha, Sujayam Guntuboyina, Adityanand Sen, Bodhisattva Columbia Univ Dept Stat New York NY 10027 USA Google Inc Mountain View CA USA Univ Calif Berkeley Dept Stat Berkeley CA 94720 USA
In this article, we study a generalization of the two-groups model in the presence of covariates-a problem that has recently received much attention in the statistical literature due to its applicability in multiple h... 详细信息
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Semiparametric Factor Analysis for Item-Level Response Time Data
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PSYCHOMETRIKA 2022年 第2期87卷 666-692页
作者: Liu, Yang Wang, Weimeng Univ Maryland 1230B Benjamin Bldg3942 Campus Dr College Pk MD 20742 USA
Item-level response time (RT) data can be conveniently collected from computer-based test/survey delivery platforms and have been demonstrated to bear a close relation to a miscellany of cognitive processes and test-t... 详细信息
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SC-MEB: spatial clustering with hidden Markov random field using empirical Bayes
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BRIEFINGS IN BIOINFORMATICS 2022年 第1期23卷 bbab466-bbab466页
作者: Yang, Yi Shi, Xingjie Liu, Wei Zhou, Qiuzhong Lau, Mai Chan Lim, Jeffrey Chun Tatt Sun, Lei Ng, Cedric Chuan Young Yeong, Joe Liu, Jin Duke NUS Med Sch Hlth Serv & Syst Res Program Singapore 16985 Singapore East China Normal Univ Acad Stat & Interdisciplinary Sci Shanghai Peoples R China Duke NUS Med Sch Vasc & Metab Disorder Program Singapore Singapore ASTAR IMCB Singapore Singapore Duke NUS Med Sch Cardiovasc & Metab Disorders Program Singapore Singapore Natl Canc Ctr Singapore Canc Discovery Hub Singapore Singapore
Spatial transcriptomics has been emerging as a powerful technique for resolving gene expression profiles while retaining tissue spatial information. These spatially resolved transcriptomics make it feasible to examine... 详细信息
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Nonparametric analysis of doubly truncated and interval-censored data
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STATISTICAL METHODS IN MEDICAL RESEARCH 2022年 第6期31卷 1157-1170页
作者: Shen, Pao-sheng Tunghai Univ Dept Stat Taichung 40704 Taiwan
In epidemiological studies, it is easier to collect data only from individuals whose failure events are within a calendar time interval, the so-called interval sampling, which leads to doubly truncated data. In many s... 详细信息
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