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检索条件"主题词=em algorithm"
4573 条 记 录,以下是181-190 订阅
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A Principled Approach to Adjust for Unmeasured Time-Stable Confounding of Supervised Treatment
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BIOMETRICAL JOURNAL 2025年 第1期67卷 e70026页
作者: Madsen, Jeppe Ekstrand Halkjaer Delvin, Thomas Scheike, Thomas Pipper, Christian Leo Pharma AS Global Clin Dev Ballerup Denmark Univ Copenhagen Dept Publ Hlth Sect Biostat Copenhagen Denmark Novo Nord Biostat OSCD & Outcomes 1 Soborg Denmark Univ Southern Denmark Dept Publ Hlth Epidemiol Biostat & Biodemog Odense Denmark
We propose a novel method to adjust for unmeasured time-stable confounding when the time between consecutive treatment administrations is fixed. We achieve this by focusing on a new-user cohort. Furthermore, we envisa... 详细信息
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Simultaneous estimation and clustering with finite mixture of nonparanormal graphical models
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COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION 2025年 第3期54卷 709-733页
作者: Aghabozorgi, Hamid Haji Eskandari, Farzad Allameh Tabatabai Univ Dept Stat Tehran Iran
Graphical mixture models provide a powerful tool to visually depict conditional independencies or dependencies between heterogeneous high-dimensional data. When the random variables corresponding to the vertices are c... 详细信息
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Finite-Mixture Continuous Logit Model: Formulation and Application for Shopping Start Time Choice of Non-Commuters
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TRANSPORTATION RESEARCH RECORD 2024年 第1期2678卷 309-320页
作者: Geng, Shuguang Ye, Xin Zhang, Tianran Wang, Ke Tongji Univ Coll Transportat Engn Key Lab Rd & Traff Engn Minist Educ Shanghai Peoples R China Shanghai Urban Planning & Design Res Inst Shanghai Peoples R China Univ Shanghai Sci & Technol Ctr Supernetworks Res Business Sch Shanghai Peoples R China
As a continuous generalization of the multinomial logit (MNL) model, the continuous logit (CL) model can be used for continuous response variables (e.g., departure time and activity duration). However, the existing CL... 详细信息
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Simple Heterogeneous Step-Stress Accelerated Life Testing Model Under Type II Censoring
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QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL 2025年 第0期
作者: Lu, Yao Kateri, Maria Rhein Westfal TH Aachen Inst Stat Aachen Germany
Common step-stress accelerated life testing (SSALT) models assume that all testing items are sampled from a homogeneous population. However, this is often not the case in practice. Practitioners observe inhomogeneous ... 详细信息
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Estimation and prediction on power Muth distribution with progressive censored data: a Bayesian approach
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COMMUNICATIONS IN STATISTICS-SIMULATION AND COMPUTATION 2024年 第5期53卷 2150-2172页
作者: Kohansal, Akram Bakouch, Hassan S. Imam Khomeini Int Univ Dept Stat Qazvin Iran Tanta Univ Fac Sci Dept Math Tanta Egypt Qassim Univ Coll Sci Dept Math Buraydah Saudi Arabia
In this paper, estimation and prediction inference of power Muth distribution, with the progressive censoring data, are described. The maximum likelihood and Bayesian approaches of the unknown parameters are considere... 详细信息
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Additive models with p-order autoregressive skew-normal errors for modeling trend and seasonality in time series
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COMMUNICATIONS IN STATISTICS-THEORY AND METHODS 2025年
作者: Ferreira, Clecio S. Paula, Gilberto A. Oliveira, Rodrigo A. Univ Fed Juiz de Fora Dept Stat Juiz De Fora MG Brazil Univ Sao Paulo Inst Math & Stat Sao Paulo SP Brazil
In this article, we propose an additive model in which the random error follows a skew-normal p-order autoregressive (AR) process where the systematic component is approximated by cubic and cyclic cubic regression spl... 详细信息
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Adaptive inference for dynamic passenger route usage patterns in a metro network considering time-varying and heavy-tailed travel times
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TRANSPORTATION RESEARCH PART C-emERGING TECHNOLOGIES 2025年 171卷
作者: Shi, Zhuangbin Shen, Wei Schonfeld, Paul Liu, Yang Zhang, Ning Kunming Univ Sci & Technol Fac Transportat Engn Jingming South Rd 727 Kunming 650500 Yunnan Peoples R China Southeast Univ Intelligent Transportat Syst Res Ctr Southeast Univ Rd 2 Nanjing 211189 Jiangsu Peoples R China Univ Maryland Dept Civil & Environm Engn College Pk MD 20742 USA
Due to the dynamic changes in timetables, passenger demand, and passenger composition, the distribution of passengers within a metro system becomes quite complex. Many studies divide a day into intervals to account fo... 详细信息
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The Shared Weighted Lindley Frailty Model for Clustered Failure Time Data
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BIOMETRICAL JOURNAL 2025年 第2期67卷 e70044页
作者: Gallardo, Diego I. Bourguignon, Marcelo Santibanez, John L. Univ Bio Bio Fac Ciencias Dept Estadist Concepcion Chile Univ Fed Rio Grande do Norte Dept Stat Natal RN Brazil Univ Atacama Fac Ingn Dept Matemat Copiapo Chile
The primary goal of this paper is to introduce a novel frailty model based on the weighted Lindley (WL) distribution for modeling clustered survival data. We study the statistical properties of the proposed model. In ... 详细信息
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Dynamic inference for left behind probabilities on congested metro routes
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TRANSPORTATION PLANNING AND TECHNOLOGY 2025年 第1期48卷 111-130页
作者: Mu, Weiyan Wang, Xin Xiong, Shifeng Beijing Univ Civil Engn & Architecture Sch Sci Beijing 100044 Peoples R China Chinese Acad Sci Acad Math & Syst Sci NCMIS KLSC Beijing Peoples R China Univ Chinese Acad Sci Sch Math Sci Beijing Peoples R China
Passengers left behind is an important measure to describe the degree of congestion in metro systems. Note that passengers' left behind probabilities are different for their different tap-in times. This paper prop... 详细信息
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An improvement of FDR for edge detection by applying em method
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INTELLIGENT DATA ANALYSIS 2022年 第5期26卷 1161-1184页
作者: Kim, Eun-Gyoung Kim, Sung-Ho Korea Adv Inst Sci & Technol Dept Math Sci Daejeon South Korea
In building a graphical model, accuracy in edge detection for the model structure is crucial for the quality of the model. We explored methods for improvement of false discovery rate(FDR) by devising an estimation pro... 详细信息
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