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Attentive recurrent adversarial domain adaptation with Top-k pseudo-labeling for time series classification

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Abstract

The key challenge of Unsupervised Domain Adaptation (UDA) for analyzing time series data is to learn domain-invariant representations by capturing complex temporal dependencies. In addition, existing unsupervised domain adaptation methods for time series data are designed to align marginal distribution between source and target domains. However, existing UDA methods (e.g. R-DANN Purushotham et al. (2017), VRADA Purushotham et al. (2017), CoDATS Wilson et al. (2020)) neglect the conditional distribution discrepancy between two domains, leading to misclassification of the target domain. Therefore, to learn domain-invariant representations by capturing the temporal dependencies and to reduce the conditional distribution discrepancy between two domains, a novel Attentive Recurrent Adversarial Domain Adaptation with Top-k time series pseudo-labeling method called ARADA-TK is proposed in this paper. In the experiments, our proposed method was compared with the state-of-the-art UDA methods (R-DANN, VRADA and CoDATS). Experimental results on four benchmark datasets revealed that ARADA-TK achieves superior classification accuracy when it is compared to the competing methods.

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Data Availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

Notes

  1. For the purpose of illustration, we depict the unfolded diagram of a RNN layer in Fig. 2

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Acknowledgements

This research was funded by the University of Macau (file no. MYRG2019-00136-FST).

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Authors and Affiliations

  1. Department of Computer and Information Science, University of Macau, Macau, China

    Qi-Qiao He & Yain-Whar Si

  2. Institute of Science and Environment, University of Saint Joseph, Macau, China

    Shirley Weng In Siu

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  1. Qi-Qiao He
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Correspondence to Yain-Whar Si.

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: Appendix A: Label proportions for the participants of HAR, HHAR, uWave and WISDM AR datasets

: Appendix A: Label proportions for the participants of HAR, HHAR, uWave and WISDM AR datasets

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Label proportions for the participants of the HAR dataset

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Label proportions for the participants of the HHAR dataset

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Label proportions for the participants of the uWave dataset

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Label proportions for the participants of the WISDM AR dataset

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He, QQ., Siu, S.W.I. & Si, YW. Attentive recurrent adversarial domain adaptation with Top-k pseudo-labeling for time series classification. Appl Intell 53, 13110–13129 (2023). https://doi.org/10.1007/s10489-022-04176-x

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