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检索条件"主题词=Expectation maximization algorithm"
648 条 记 录,以下是521-530 订阅
排序:
A Thorough Comparison Between Independent Cascade and Susceptible-Infected-Recovered Models
arXiv
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arXiv 2024年
作者: Liu, Panfeng Qiu, Guoliang Tao, Biaoshuai Yang, Kuan Shanghai Jiao Tong University China
We study cascades in social networks with the independent cascade (IC) model and the Susceptible-Infected-recovered (SIR) model. The well-studied IC model fails to capture the feature of node recovery, and the SIR mod... 详细信息
来源: 评论
Learning Submodular Sequencing from Samples
arXiv
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arXiv 2024年
作者: Yuan, Jing Tang, Shaojie Department of Computer Science and Engineering The University of North Texas United States Department of Management Science and Systems University at Buffalo United States
This paper addresses the problem of sequential submodular maximization: selecting and ranking items in a sequence to optimize some composite submodular function. In contrast to most of the previous works, which assume... 详细信息
来源: 评论
Community Detection with Heterogeneous Block Covariance Model
arXiv
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arXiv 2024年
作者: Li, Xiang Zhao, Yunpeng Pan, Qing Hao, Ning Department of Statistics George Washington University United States Department of Statistics Colorado State University United States Department of Biostatistics and Bioinformatics George Washington University United States Department of Mathematics University of Arizona United States
Community detection is the task of clustering objects based on their pairwise relationships. Most of the model-based community detection methods, such as the stochastic block model and its variants, are designed for n... 详细信息
来源: 评论
High-Dimensional Markov-switching Ordinary Differential Processes
arXiv
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arXiv 2024年
作者: Tsai, Katherine Kolar, Mladen Koyejo, Sanmi Department of Electrical and Computer Engineering University of Illinois Urbana-Champaign United States Marshall School of Business University of Southern California United States Department of Computer Science Stanford University United States
We investigate the parameter recovery of Markov-switching ordinary differential processes from discrete observations, where the differential equations are nonlinear additive models. This framework has been widely appl... 详细信息
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A Model-Based Clustering Approach for Bounded Data Using Transformation-Based Gaussian Mixture Models
arXiv
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arXiv 2024年
作者: Scrucca, Luca Department of Statistical Sciences University of Bologna Italy
The clustering of bounded data presents unique challenges in statistical analysis due to the constraints imposed on the data values. This paper introduces a novel method for model-based clustering specifically designe... 详细信息
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A Robust Probability-based Joint Registration Method of Multiple Point Clouds Considering Local Consistency
arXiv
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arXiv 2024年
作者: Su, Ling-Jie Xu, Wei Zhao, Shu-Yang Cheng, Yu-Qi Li, Wen-Long The State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan430074 China
In robotic inspection, joint registration of multiple point clouds is an essential technique for estimating the transformation relationships between measured parts, such as multiple blades in a propeller. However, the... 详细信息
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Multi-objective Reinforcement Learning with Nonlinear Preferences: Provable Approximation for Maximizing Expected Scalarized Return
arXiv
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arXiv 2023年
作者: Peng, Nianli Tian, Muhang Fain, Brandon Harvard University CambridgeMA United States Duke University DurhamNC United States
We study multi-objective reinforcement learning with nonlinear preferences over trajectories. That is, we maximize the expected value of a nonlinear function over accumulated rewards (expected scalarized return or ESR... 详细信息
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Block Coordinate DC Programming
arXiv
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arXiv 2024年
作者: Maskan, Hoomaan Halvachi, Paniz Sra, Suvrit Yurtsever, Alp Umeå University Sweden Massachusetts Institute of Technology United States Technical University of Munich Germany
We introduce an extension of the Difference of Convex algorithm (DCA) in the form of a block coordinate approach for problems with separable structure. For n coordinate-blocks and k iterations, our main result proves ... 详细信息
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Adaptive maximization of social welfare
arXiv
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arXiv 2023年
作者: Cesa-Bianchi, Nicolò Colomboni, Roberto Kasy, Maximilian Università degli Studi di Milano Politecnico di Milano Italy Department of Economics University of Oxford United Kingdom
We consider the problem of repeatedly choosing policies to maximize social welfare. Welfare is a weighted sum of private utility and public revenue. Earlier outcomes inform later policies. Utility is not observed, but... 详细信息
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On an EM-based closed-form solution for 2 parameter IRT models
arXiv
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arXiv 2024年
作者: Stefano, Noventa Faleh, Roberto Kelava, Augustin Methods Center Universität Tübingen Germany
It is a well-known issue that in Item Response Theory models there is no closed-form for the maximum likelihood estimators of the item parameters. Parameter estimation is therefore typically achieved by means of numer... 详细信息
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