Papers › Support Vector Guided Softmax Loss for Face Recognition

Support Vector Guided Softmax Loss for Face Recognition

29 Dec 2018arXiv:1812.11317archive 2025-07-28

Xiaobo Wang, Shuo Wang, Shifeng Zhang, Tianyu Fu, Hailin Shi, Tao Mei

Face recognition has witnessed significant progresses due to the advances of deep convolutional neural networks (CNNs), the central challenge of which, is feature discrimination. To address it, one group tries to exploit mining-based strategies (\textit{e.g.}, hard example mining and focal loss) to focus on the informative examples. The other group devotes to designing margin-based loss functions (\textit{e.g.}, angular, additive and additive angular margins) to increase the feature margin from the perspective of ground truth class. Both of them have been well-verified to learn discriminative features. However, they suffer from either the ambiguity of hard examples or the lack of discriminative power of other classes. In this paper, we design a novel loss function, namely support vector guided softmax loss (SV-Softmax), which adaptively emphasizes the mis-classified points (support vectors) to guide the discriminative features learning. So the developed SV-Softmax loss is able to eliminate the ambiguity of hard examples as well as absorb the discriminative power of other classes, and thus results in more discrimiantive features. To the best of our knowledge, this is the first attempt to inherit the advantages of mining-based and margin-based losses into one framework. Experimental results on several benchmarks have demonstrated the effectiveness of our approach over state-of-the-arts.

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Code

xiaoboCASIA/SV-X-Softmax officialmentioned in papermentioned on GitHubpytorch report
SevenZhan/Pytorch mentioned on GitHubpytorch report
comratvlad/sv_softmax mentioned on GitHubtf report

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Tasks

Face Recognition

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Face Identification MegaFace SV-AM-Softmax Accuracy 97.2% #8 of 13 Archive leaderboard report
Face Identification Trillion Pairs Dataset SV-AM-Softmax Accuracy 73.56 #1 of 6 Archive leaderboard report
Face Verification MegaFace SV-AM-Softmax Accuracy 97.38% #7 of 12 Archive leaderboard report
Face Verification Trillion Pairs Dataset SV-AM-Softmax Accuracy 72.71 #1 of 6 Archive leaderboard report

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Methods

Softmax

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