Výsledky vyhledávání - Weighted expectation maximization algorithm

Estimation in a binomial stochastic blockmodel for a weighted graph by a variational expectation maximization algorithm Autor Haj, Abir El, Slaoui, Yousri, Louis, Pierre-Yves, Khraibani, Zaher

“… In this paper, we are interested in the case of co-citation networks, where the nodes are words and each edge joining a pair of words is weighted by the number of co-citation of these two words…”
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Weighted expectation maximization reconstruction algorithms for thermoacoustic tomography Autor Jin Zhang, Anastasio, M.A., Xiaochuan Pan, Wang, L.V.

“… In this correspondence, we propose an infinite family of weighted expectation maximization (EM) algorithms for reconstruction of images from temporally truncated TAT measurement data…”
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XRCT image processing for sand fabric reconstruction Autor Tan, Peng, Wijesuriya, Hasitha Sithadara, Sitar, Nicholas

“…We explore computationally efficient techniques to improve the XRCT image processing of low resolution and very noisy images for use in reconstruction of the…”
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Step-and-shoot Dynamic Whole-body PET Parametric Imaging with Weighted Expectation Maximization Algorithm Autor Ye, Qing, Zhao, Yizhang, Xu, Hancong, Lv, Yang, Dong, Yun

“…Dynamic whole-body PET parametric imaging has been widely investigated and demonstrated clinically feasibility. In the step-and-shoot dynamic protocol, an…”
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A New Spatial Filtering Algorithm for Noisy and Missing GNSS Position Time Series Using Weighted Expectation Maximization Principal Component Analysis: A Case Study for Regional GNSS Network in Xinjiang Province Autor Li, Wudong, Li, Zhao, Jiang, Weiping, Chen, Qusen, Zhu, Guangbin, Wang, Jian

“… However, such methodologies become inappropriate when missing and noisy data exists. In this research, we introduce a novel spatial filtering algorithm called Weighted Expectation Maximization Principal Component Analysis (WEMPCA…”
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Weighted expectation maximization reconstruction algorithms with application to gated megavoltage tomography Autor Zhang, Jin, Shi, Daxin, Anastasio, Mark A, Sillanpaa, Jussi, Chang, Jenghwa

“…We propose and investigate weighted expectation maximization (EM) algorithms for image reconstruction in x-ray tomography…”
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A new automatic algorithm for quantification of myocardial infarction imaged by late gadolinium enhancement cardiovascular magnetic resonance: experimental validation and comparison to expert delineations in multi-center, multi-vendor patient data Autor Engblom, Henrik, Tufvesson, Jane, Jablonowski, Robert, Carlsson, Marcus, Aletras, Anthony H., Hoffmann, Pavel, Jacquier, Alexis, Kober, Frank, Metzler, Bernhard, Erlinge, David, Atar, Dan, Arheden, Håkan, Heiberg, Einar

“… delineations in multi-center, multi-vendor patient data. The new automatic algorithm, EWA (Expectation Maximization, weighted intensity, a priori information…”
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Because Muncie's Densities Are Not Manhattan's: Using Geographical Weighting in the Expectation–Maximization Algorithm for Areal Interpolation Autor Schroeder, Jonathan P., Van Riper, David C.

“…–maximization (EM) algorithm and geographically weighted regression. The EM algorithm provides a framework for incorporating proper constraints on data…”
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WemIQ: an accurate and robust isoform quantification method for RNA-seq data Autor Zhang, Jing, Kuo, C.-C. Jay, Chen, Liang

“…). WemIQ integrates an effective bias removal with a weighted expectation maximization (EM) algorithm to distribute reads among isoforms efficiently…”
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Community detection for multilayer weighted networks Autor Chen, Yan, Mo, Dongxu

“… A variational expectation-maximisation algorithm is derived to estimate the parameters of interest…”
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On weighting clustering Autor Nock, R., Nielsen, F.

“… The motivations come principally from an analogy with powerful supervised classification methods known as boosting algorithms…”
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A data‐driven soft sensor based on weighted probabilistic slow feature analysis for nonlinear dynamic chemical processes Autor Zhang, Miao, Xu, Beike, Zhou, Le, Zheng, Hui, Jie, Jing

“… Then, the expectation maximization algorithm is applied to estimate the model parameters and a locally weighted regression…”
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Estimation for zero‐inflated beta‐binomial regression model with missing response data Autor Luo, Rong, Paul, Sudhir

“… A weighted expectation maximization algorithm is used for the maximum likelihood estimation of the parameters involved…”
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Cardiovascular Magnetic Resonance to Predict Appropriate Implantable Cardioverter Defibrillator Therapy in Ischemic and Nonischemic Cardiomyopathy Patients Using Late Gadolinium Enhancement Border Zone: Comparison of Four Analysis Methods Autor Jablonowski, Robert, Chaudhry, Uzma, van der Pals, Jesper, Engblom, Henrik, Arheden, Håkan, Heiberg, Einar, Wu, Katherine C, Borgquist, Rasmus, Carlsson, Marcus

“… Two semiautomatic algorithms, expectation maximization, weighted intensity, a priori information and a weighted border zone algorithm, were compared with a modified full-width half-maximum…”
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Segmentation of diffusion-weighted brain images using expectation maximization algorithm initialized by hierarchical clustering Autor Chia-Feng Lu, Po-Shan Wang, Chou, Yen-Chun, Li, Hsiao-Chien, Bing-Wen Soong, Wu, Yu-Te

“…Tissue segmentation based on diffusion-weighted images (DWI) provides complementary information of tissue contrast to the structural MRI for facilitating the tissue segmentation…”
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Bayesian Generalized Linear Models for Analyzing Compositional and Sub‐Compositional Microbiome Data via EM Algorithm Autor Zhang, Li, Ding, Zhenying, Cui, Jinhong, Zhou, Xiaoxiao, Yi, Nengjun

“… Various approaches, including penalized regression and Markov Chain Monte Carlo (MCMC) algorithms, have been extended to enforce this sum‐to‐zero constraint…”
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Sample-weighted clustering methods Autor Yu, Jian, Yang, Miin-Shen, Lee, E. Stanley

“… Such method can generate the sample-weighted versions of most clustering algorithms, such as k -means, fuzzy c -means (FCM) and expectation & maximization (EM), etc…”
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Cross entropy-based importance sampling using Gaussian densities revisited Autor Geyer, Sebastian, Papaioannou, Iason, Straub, Daniel

“…•We compare two distributions as sampling densities in the cross entropy method.•A modified expectation-maximization algorithm is proposed for fitting the parameters…”
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An accelerated failure time regression model for illness–death data: A frailty approach Autor Kats, Lea, Gorfine, Malka

“… A semiparametric maximum likelihood estimation procedure is developed via a kernel smoothed‐aided expectation‐maximization algorithm, and variances are estimated…”
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Estimation for zero-inflated over-dispersed count data model with missing response Autor Mian, Rajibul, Paul, Sudhir

“… A weighted expectation maximization algorithm is used for the maximum likelihood estimation of the parameters involved…”
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