arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2209.04594cs.LG
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基于最优传输的无监督领域自适应

Unsupervised Domain Adaptation for Extra Features in the Target Domain Using Optimal Transport

The Institute of Statistical Mathematics(统计数学研究所);RIKEN AIP(理化学研究所先进智能项目中心)

Toshimitsu Aritake, Hideitsu Hino

摘要:

领域自适应的目的是将从源领域获得的标记实例的知识转移到目标领域,以填补领域之间的空白。大多数领域自适应方法假设源域和目标域具有相同的维度。当每个域中的特征数量不同时适用的方法很少被研究,特别是当没有为从目标域获得的测试数据给出标签信息时。在本文中,它是假设共同的功能存在于两个域和额外的(新的附加)功能中观察到的目标域,因此,目标域的维数高于源域。为了利用同质性的共同特点,这些源和目标域之间的适应制定为一个最佳运输(OT)的问题。此外,在目标域中的建议OT为基础的方法的学习界推导。所提出的算法进行了验证,使用模拟和真实世界的数据。

英文摘要:

Domain adaptation aims to transfer knowledge of labeled instances obtained from a source domain to a target domain to fill the gap between the domains. Most domain adaptation methods assume that the source and target domains have the same dimensionality. Methods that are applicable when the number of features is different in each domain have rarely been studied, especially when no label information is given for the test data obtained from the target domain. In this paper, it is assumed that common features exist in both domains and that extra (new additional) features are observed in the target domain; hence, the dimensionality of the target domain is higher than that of the source domain. To leverage the homogeneity of the common features, the adaptation between these source and target domains is formulated as an optimal transport (OT) problem. In addition, a learning bound in the target domain for the proposed OT-based method is derived. The proposed algorithm is validated using both simulated and real-world data.

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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