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Poster
Domain Adaptation for Time Series Under Feature and Label Shifts
Huan He · Owen Queen · Teddy Koker · Consuelo Cuevas · Theodoros Tsiligkaridis · Marinka Zitnik

Thu Jul 27 01:30 PM -- 03:00 PM (PDT) @ Exhibit Hall 1 #303
in Poster Session 5 »

Unsupervised domain adaptation (UDA) enables the transfer of models trained on source domains to unlabeled target domains. However, transferring complex time series models presents challenges due to the dynamic temporal structure variations across domains. This leads to feature shifts in the time and frequency representations. Additionally, the label distributions of tasks in the source and target domains can differ significantly, posing difficulties in addressing label shifts and recognizing labels unique to the target domain. Effectively transferring complex time series models remains a formidable problem. We present RAINCOAT, the first model for both closed-set and universal domain adaptation on complex time series. RAINCOAT addresses feature and label shifts by considering both temporal and frequency features, aligning them across domains, and correcting for misalignments to facilitate the detection of private labels. Additionally, RAINCOAT improves transferability by identifying label shifts in target domains. Our experiments with 5 datasets and 13 state-of-the-art UDA methods demonstrate that RAINCOAT can improve transfer learning performance by up to 16.33% and can handle both closed-set and universal domain adaptation.

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Author Information

Huan He (Harvard University)
Owen Queen (Harvard University)
Teddy Koker (MIT Lincoln Laboratory, Massachusetts Institute of Technology)
Consuelo Cuevas (MIT Lincoln Laboratory, Massachusetts Institute of Technology)
Theodoros Tsiligkaridis (MIT Lincoln Laboratory, Massachusetts Institute of Technology)
Marinka Zitnik (Harvard University)

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