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大尺度广义线性模型的凸变分贝叶斯推理

Convex Variational Bayesian Inference for Large Scale Generalized Linear Models
课程网址: http://videolectures.net/icml09_nickisch_cvb/  
主讲教师: Hannes Nickisch
开课单位: 马克斯普朗克研究所
开课时间: 2009-08-26
课程语种: 英语
中文简介:
我们展示了如何为非常大的广义线性模型实现变分贝叶斯推理。我们的松弛被证明是任何对数凹模型的凸问题。我们提供了一种通用的双循环算法,用于在具有任意超高斯势的模型上解决这种松弛问题。通过迭代地解耦标准,大部分工作可以通过求解大型线性系统来完成,使得我们的算法比先前针对相同问题的解算器更快地渲染数量级。我们评估了关于大型二元分类模型的贝叶斯主动学习问题的方法,并展示了如何解决许多候选和连续包含步骤的设置。
课程简介: We show how variational Bayesian inference can be implemented for very large generalized linear models. Our relaxation is proven to be a convex problem for any log-concave model. We provide a generic double loop algorithm for solving this relaxation on models with arbitrary super-Gaussian potentials. By iteratively decoupling the criterion, most of the work can be done by solving large linear systems, rendering our algorithm orders of magnitude faster than previously proposed solvers for the same problem. We evaluate our method on problems of Bayesian active learning for large binary classification models, and show how to address settings with many candidates and sequential inclusion steps.
关 键 词: 广义线性; 松弛; 数凹模型
课程来源: 视频讲座网
最后编审: 2019-04-24:cwx
阅读次数: 21