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When does label smoothing help?
Rafael Mรผller, Simon Kornblith, Geoffrey E. Hinton
To explain these observations, we visualize how label smoothing changes therepresentations learned bythepenultimate layerofthenetwork. We show that label smoothing encourages the representations of training examples from thesame class togroup intight clusters. This results inloss ofinformation inthe logits about resemblances between instances ofdifferent classes, which isnecessary for distillation, but does not hurt generalization or calibration of the model'spredictions.
Prior-Free Dynamic Auctions with Low Regret Buyers
Yuan Deng, Jon Schneider, Balasubramanian Sivan
We study the problem of how to repeatedly sell to a buyer running a no-regret,mean-based algorithm. Previous work [Braverman et al., 2018] shows that it ispossible to design effective mechanisms in such a setting that extract almost allof the economic surplus, but these mechanisms require the buyer's values each