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Un-Mixing Test-Time Normalization Statistics: Combatting Label Temporal Correlation
March 15, 2024, 4:46 a.m. | Devavrat Tomar, Guillaume Vray, Jean-Philippe Thiran, Behzad Bozorgtabar
cs.CV updates on arXiv.org arxiv.org
Abstract: Recent test-time adaptation methods heavily rely on nuanced adjustments of batch normalization (BN) parameters. However, one critical assumption often goes overlooked: that of independently and identically distributed (i.i.d.) test batches with respect to unknown labels. This oversight leads to skewed BN statistics and undermines the reliability of the model under non-i.i.d. scenarios. To tackle this challenge, this paper presents a novel method termed 'Un-Mixing Test-Time Normalization Statistics' (UnMix-TNS). Our method re-calibrates the statistics for each …
arxiv correlation cs.cv normalization statistics temporal test type
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