arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1708.04529cs.LGcs.AIstat.ML
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从嘈杂的标签分布中学习

Learning from Noisy Label Distributions

Software Technology and Artificial Intelligence Research Laboratory (STAIR Lab), Chiba Institute of Technology(千叶工业大学软件技术与人工智能研究实验室(STAIR Lab))

Yuya Yoshikawa

摘要:

在本文中,我们考虑了一个新的机器学习问题,即从噪声标签分布中学习分类器。在这个问题中,每个具有特征向量的实例至少属于一个组。然后,代替每个实例的真实标签,我们观察与组相关联的实例的标签分布,其中标签分布被未知噪声扭曲。我们的目标是(1)估计每个实例的真实标签,以及(2)学习一个分类器来预测新实例的真实标签。我们提出了一个概率模型,认为真正的标签分布的群体和参数,代表作为隐藏变量的噪声。该模型可以基于变分贝叶斯方法来学习。在数值实验中,我们表明,该模型优于现有的方法在估计的真实标签的实例。

英文摘要:

In this paper, we consider a novel machine learning problem, that is, learning a classifier from noisy label distributions. In this problem, each instance with a feature vector belongs to at least one group. Then, instead of the true label of each instance, we observe the label distribution of the instances associated with a group, where the label distribution is distorted by an unknown noise. Our goals are to (1) estimate the true label of each instance, and (2) learn a classifier that predicts the true label of a new instance. We propose a probabilistic model that considers true label distributions of groups and parameters that represent the noise as hidden variables. The model can be learned based on a variational Bayesian method. In numerical experiments, we show that the proposed model outperforms existing methods in terms of the estimation of the true labels of instances.

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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