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检索条件"主题词=EM-algorithm"
256 条 记 录,以下是71-80 订阅
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Generalized semiparametrically structured mixed models
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COMPUTATIONAL STATISTICS & DATA ANALYSIS 2004年 第4期46卷 777-800页
作者: Tutz, G Univ Munich D-80799 Munich Germany
Generalized linear mixed models are a common tool in statistics which extends generalized linear models to situations where data are hierarchically clustered or correlated. It is shown that the simple but often inadeq... 详细信息
来源: 评论
An approach to non-homogenous phase-type distributions through multiple cut-points
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QUALITY ENGINEERING 2023年 第4期35卷 619-638页
作者: Ruiz-Castro, Juan Eloy Acal, Christian Roldan, Juan B. Univ Granada Dept Stat & OR Granada Spain Univ Granada IMAG Granada Spain Univ Granada Dept Elect & Comp Technol Granada Spain
A new class of distributions based on phase-type distributions is introduced in the current paper to model lifetime data in the field of reliability analysis. This one is the natural extension of the distribution prop... 详细信息
来源: 评论
Nonparametric estimation from length-biased data under competing risks
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COMPUTATIONAL STATISTICS & DATA ANALYSIS 2007年 第5期51卷 2653-2669页
作者: de Una-Alvarez, Jacobo Rodriguez-Casal, Alberto Univ Vigo Dept Stat & Operat Res Vigo 36310 Spain
A new model for cross-sectional lifetime data is presented. The model is based on the length-bias assumption, and it is adapted to situations in which several types of censoring may occur. The NPMLE of the survival fu... 详细信息
来源: 评论
Detecting shocks: Outliers and breaks in time series
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JOURNAL OF ECONOMETRICS 1997年 第2期80卷 387-422页
作者: Atkinson, AC Koopman, SJ Shephard, N UNIV OXFORD NUFFIELD COLL OXFORD OX1 1NFENGLAND TILBURG UNIV CTR NL-5000 LE TILBURGNETHERLANDS UNIV LONDON LONDON SCH ECON & POLIT SCI DEPT STATLONDON WC2A 2AEENGLAND
A single outlier in a regression model can be detected by the effect of its deletion on the residual sum of squares, An equivalent procedure is the simple intervention in which an extra parameter is added for the mean... 详细信息
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ANALYSIS OF GRAY-LEVEL HISTOGRAMS BY USING STATISTICAL-METHODS FOR MIXTURES OF DISTRIBUTIONS
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PATTERN RECOGNITION LETTERS 1993年 第7期14卷 585-590页
作者: JANSEN, RC REININK, K VANDERHEIJDEN, GWAM Centre for Plant Breeding and Reproduction Research (CPRO-DLO) P.O. Box 16 6700 AA Wageningen Netherlands
An automatic procedure to estimate proportions of components from grey level histograms is proposed. This procedure is based on statistical methods for parameter estimation in mixtures of normal distributions by maxim... 详细信息
来源: 评论
Progressive Type-II censoring and coherent systems
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NAVAL RESEARCH LOGISTICS 2015年 第6期62卷 512-530页
作者: Cramer, Erhard Navarro, Jorge Rhein Westfal TH Aachen Inst Stat Dept Math D-52056 Aachen Germany Univ Murcia Fac Matemat Dept Stat & Operat Res E-30100 Murcia Spain
A new connection between the distribution of component failure times of a coherent system and (adaptive) progressively Type-II censored order statistics is established. Utilizing this property, we develop inferential ... 详细信息
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Mixture-based clustering for the ordered stereotype model
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COMPUTATIONAL STATISTICS & DATA ANALYSIS 2016年 93卷 46-75页
作者: Fernandez, D. Arnold, R. Pledger, S. Victoria Univ Wellington Sch Math Stat & Operat Res Wellington 6140 New Zealand
Many of the methods which deal with the reduction of dimensionality in matrices of data are based on mathematical techniques such as distance-based algorithms or matrix decomposition and eigenvalues. Recently a group ... 详细信息
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Optimized multiple linear mappings for single image super-resolution
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OPTICS COMMUNICATIONS 2017年 404卷 169-176页
作者: Zhang, Kaibing Li, Jie Xiong, Zenggang Liu, Xiuping Gao, Xinbo Xian Polytech Univ Coll Elect & Informat Xian 710048 Shaanxi Peoples R China Xidian Univ Sch Elect Engn Xian 710071 Shaanxi Peoples R China Hubei Engn Univ Sch Comp & Informat Sci Xiaogan 432000 Peoples R China
Learning piecewise linear regression has been recognized as an effective way for example learning-based single image super-resolution (SR) in literature. In this paper, we employ an expectation-maximization (em) algor... 详细信息
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Cluster validity indices for mixture hazards regression models
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MATHemATICAL BIOSCIENCES AND ENGINEERING 2020年 第2期17卷 1616-1636页
作者: Chang, Yi-Wen Lu, Kang-Ping Chang, Shao-Tung Natl Taiwan Normal Univ Dept Math Taipei Taiwan Natl Taichung Univ Sci & Technol Dept Appl Stat Taichung Taiwan
In the analysis of survival data, the problems of competing risks arise frequently in medical applications where individuals fail from multiple causes. Semiparametric mixture regression models have become a prominent ... 详细信息
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Generalized exponential-power series distributions
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COMPUTATIONAL STATISTICS & DATA ANALYSIS 2012年 第12期56卷 4047-4066页
作者: Mahmoudi, Eisa Jafari, Ali Akbar Yazd Univ Dept Stat Yazd Iran
In this paper, we introduce the generalized exponential-power series (GEPS) class of distributions, which is obtained by compounding generalized exponential and power series distributions. The compounding procedure fo... 详细信息
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