arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.6504stat.MLcs.LG
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通过支持度量机器从分布中学习

Learning from Distributions via Support Measure Machines

MPI for Intelligent Systems(马克斯·普朗克智能系统研究所);The Institute of Statistical Mathematics(统计数学研究所)

Krikamol Muandet, Kenji Fukumizu, Francesco Dinuzzo, Bernhard Schölkopf

摘要:

提出了一种基于核的概率测度判别学习框架。我们的框架不依赖于大量的向量训练示例,而是使用一组概率分布来学习,这些概率分布被构造成有意义地表示训练数据。通过将这些概率分布表示为再生核希尔伯特空间(RKHS)中的平均嵌入,我们能够以简单的方式应用许多标准的基于核的学习技术。为了实现这一点,我们构建了一个泛化的支持向量机(SVM)称为支持度量机(SMM)。我们对SMM的分析为它们与传统SVM的关系提供了一些见解。基于这样的见解,我们提出了一种灵活的SVM(Flex-SVM),它在每个训练样本上放置不同的核函数。在合成数据和真实数据上的实验结果证明了我们所提出的框架的有效性。

英文摘要:

This paper presents a kernel-based discriminative learning framework on probability measures. Rather than relying on large collections of vectorial training examples, our framework learns using a collection of probability distributions that have been constructed to meaningfully represent training data. By representing these probability distributions as mean embeddings in the reproducing kernel Hilbert space (RKHS), we are able to apply many standard kernel-based learning techniques in straightforward fashion. To accomplish this, we construct a generalization of the support vector machine (SVM) called a support measure machine (SMM). Our analyses of SMMs provides several insights into their relationship to traditional SVMs. Based on such insights, we propose a flexible SVM (Flex-SVM) that places different kernel functions on each training example. Experimental results on both synthetic and real-world data demonstrate the effectiveness of our proposed framework.

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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