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Baochen Sun*, Jiashi Feng**, Kate Saenko* *UMass Lowell, ** UC Berkeley & National University of Singapore [email protected], [email protected], [email protected] Return of Frustratingly Easy Domain Adaptation Domain Shift CORrelation ALignment (CORAL) This research was supported by NSF Awards IIS-1451244 and IIS-1212928. Train Classifier on Transformed Source and Test on Target Whitening both Domains TASK-CV 2015 Full paper to appear in proceedings of AAAI-16, preprint is available on arXiv. Whitening Source Re-Coloring with Target Cov Fails to Align Covs Covs are likely low rank Ø Distributions are different Ø Align Ds by aligning Covs Ø Closed form solution Ø Whitening followed by re-coloring Conclusion Ø Improvement is consistent Ø Larger improvement on strongly correlated features (e.g., deep features)

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Page 1: Return of Frustratingly Easy Domain Adaptationadas.cvc.uab.es › task-cv2015 › materials › Baochen... · Return of Frustratingly Easy Domain Adaptation DomainShift CORrelation

Baochen Sun*, Jiashi Feng**, Kate Saenko**UMass Lowell, **UC Berkeley & NationalUniversityofSingapore

[email protected], [email protected], [email protected]

Return of Frustratingly Easy Domain Adaptation

Domain Shift CORrelation ALignment (CORAL)

ThisresearchwassupportedbyNSFAwardsIIS-1451244andIIS-1212928.

TrainClassifieronTransformedSourceandTestonTarget

WhiteningbothDomains

TASK-CV 2015

FullpapertoappearinproceedingsofAAAI-16,preprintisavailableonarXiv.

WhiteningSource Re-ColoringwithTargetCov

FailstoAlignCovs

Covsarelikelylowrank

Ø DistributionsaredifferentØ AlignDsbyaligningCovs

Ø ClosedformsolutionØ Whiteningfollowedbyre-coloring

ConclusionØ ImprovementisconsistentØ Largerimprovementonstronglycorrelated

features(e.g.,deepfeatures)

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