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arXiv 1206.5754stat.MLcs.AIcs.MS
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使用GPstuff的高斯过程贝叶斯建模

Bayesian Modeling with Gaussian Processes using the GPstuff Toolbox

Aalto University(阿尔托大学);University of Helsinki(赫尔辛基大学);Helsinki Institute for Information Technology HIIT(赫尔辛基信息技术研究所(HIIT));Aalto University School of Science(阿尔托大学理学院)

Jarno Vanhatalo, Jaakko Riihimäki, Jouni Hartikainen, Pasi Jylänki, Ville Tolvanen, Aki Vehtari

摘要:

高斯过程(GP)是概率建模的有力工具。它们可以用来定义分层贝叶斯模型中潜在函数的先验分布。先验函数由均值和协方差函数隐式定义,它们决定函数的平滑性和可变性。然后,通过评估或近似后验过程,可以直接在函数空间中进行推理。尽管其有吸引力的理论属性的全球定位系统提供了实际的挑战,在其实施。GPstuff是一个通用的GP模型计算工具集合,与Linux和Windows MATLAB和Octave兼容。其中包括各种推理方法,稀疏近似和模型评估工具。在这项工作中,我们回顾了这些工具,并演示了GPstuff在几个模型中的使用。

英文摘要:

Gaussian processes (GP) are powerful tools for probabilistic modeling purposes. They can be used to define prior distributions over latent functions in hierarchical Bayesian models. The prior over functions is defined implicitly by the mean and covariance function, which determine the smoothness and variability of the function. The inference can then be conducted directly in the function space by evaluating or approximating the posterior process. Despite their attractive theoretical properties GPs provide practical challenges in their implementation. GPstuff is a versatile collection of computational tools for GP models compatible with Linux and Windows MATLAB and Octave. It includes, among others, various inference methods, sparse approximations and tools for model assessment. In this work, we review these tools and demonstrate the use of GPstuff in several models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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