arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.02015eess.SPcs.LGeess.IV
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基于单侧对齐的漏类鲁棒域自适应故障诊断

Missing-Class-Robust Domain Adaptation by Unilateral Alignment for Fault Diagnosis

ETH Zurich(苏黎世联邦理工学院)

Qin Wang, Gabriel Michau, Olga Fink

摘要:

领域自适应的目的是通过利用源领域中学习到的知识并将其转移到目标领域来提高模型性能。最近,域对抗方法在减轻源域和目标域之间的分布偏移方面特别成功。然而,这些方法假设两个域之间的标签空间相同。这种假设对实际应用施加了很大的限制,因为目标训练集可能不包含完整的类集。在本文中,我们证明了领域对抗方法的性能在训练过程中容易受到不完整的目标标签空间的影响。为了克服这个问题,我们提出了一个两阶段的单边对齐方法。所提出的方法利用源域的类间关系,并单方面将目标与源域对齐。所提出的方法的好处首先评估MNIST $\rightarrow$ MNIST-M适应任务。所提出的方法也进行了评估的故障诊断任务,在目标训练数据集的故障类型丢失的问题是在实践中常见的。两个实验都证明了所提出的方法的有效性。

英文摘要:

Domain adaptation aims at improving model performance by leveraging the learned knowledge in the source domain and transferring it to the target domain. Recently, domain adversarial methods have been particularly successful in alleviating the distribution shift between the source and the target domains. However, these methods assume an identical label space between the two domains. This assumption imposes a significant limitation for real applications since the target training set may not contain the complete set of classes. We demonstrate in this paper that the performance of domain adversarial methods can be vulnerable to an incomplete target label space during training. To overcome this issue, we propose a two-stage unilateral alignment approach. The proposed methodology makes use of the inter-class relationships of the source domain and aligns unilaterally the target to the source domain. The benefits of the proposed methodology are first evaluated on the MNIST$\rightarrow$MNIST-M adaptation task. The proposed methodology is also evaluated on a fault diagnosis task, where the problem of missing fault types in the target training dataset is common in practice. Both experiments demonstrate the effectiveness of the proposed methodology.

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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