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arXiv 1907.08087cs.LGstat.ML
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概率回归链的Monte Carlo方法

Probabilistic Regressor Chains with Monte Carlo Methods

Ecole Polytechnique, Institut Polytechnique de Paris(巴黎理工学院综合理工学校);Univ. Carlos III de Madrid(马德里卡洛斯三世大学)

Jesse Read, Luca Martino

摘要:

近年来,文献中已经提供了大量和多样性的技术来解决多标签分类任务,包括分类器链,其中预测作为附加特征级联到其他模型。将这种链接方法扩展到多输出回归的想法已经被提出并进行了试验:回归链。然而,到目前为止,这仅限于贪婪推理,并且与单个模型相比提供了相对较差的结果,并且适用性有限。在本文中,我们确定和讨论的主要局限性,包括不同的基础模型,损失函数,可解释性和其他现实世界的应用程序的分析。为了克服所确定的局限性,我们研究和开发回归链的方法。特别是,我们提出了一个顺序蒙特卡罗方案的框架中的概率回归链,我们表明它可以是有效的,灵活的和有用的几种类型的数据。我们将回归链放在具有连续输出的多输出学习的一般上下文中,并在此过程中进一步阐明分类器链。

英文摘要:

A large number and diversity of techniques have been offered in the literature in recent years for solving multi-label classification tasks, including classifier chains where predictions are cascaded to other models as additional features. The idea of extending this chaining methodology to multi-output regression has already been suggested and trialed: regressor chains. However, this has so-far been limited to greedy inference and has provided relatively poor results compared to individual models, and of limited applicability. In this paper we identify and discuss the main limitations, including an analysis of different base models, loss functions, explainability, and other desiderata of real-world applications. To overcome the identified limitations we study and develop methods for regressor chains. In particular we present a sequential Monte Carlo scheme in the framework of a probabilistic regressor chain, and we show it can be effective, flexible and useful in several types of data. We place regressor chains in context in general terms of multi-output learning with continuous outputs, and in doing this shed additional light on classifier chains.

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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