论文标题
Weshort：较弱的快捷方式结构的分布式检测
WeShort: Out-of-distribution Detection With Weak Shortcut structure
论文作者
论文摘要
神经网络在分布中的数据中取得了令人印象深刻的性能，该数据与训练集相同，但可以为这些网络从未见过的数据产生过分自信的结果。因此，必须检测输入是否来自分布（OOD），以确保现实世界中部署的神经网络的安全性。在本文中，我们提出了一种简单有效的事后技术Weshort，以减少神经网络对OOD数据的过度自信。我们的方法灵感来自对内部残留结构的观察，该结构显示了在快捷层中的OOD和分布（ID）数据的分离。我们的方法与不同的OOD检测分数兼容，并且可以很好地推广到网络的不同体系结构。我们在各种OOD数据集上演示了我们的方法，以展示其竞争性能并提供合理的假设，以解释我们的方法为何起作用。在Imagenet基准测试上，Weshort在假阳性率（FPR95）和接收器操作特性（AUROC）下的最新性能（fpr95）在事后方法的家族中。
Neural networks have achieved impressive performance for data in the distribution which is the same as the training set but can produce an overconfident incorrect result for the data these networks have never seen. Therefore, it is essential to detect whether inputs come from out-of-distribution(OOD) in order to guarantee the safety of neural networks deployed in the real world. In this paper, we propose a simple and effective post-hoc technique, WeShort, to reduce the overconfidence of neural networks on OOD data. Our method is inspired by the observation of the internal residual structure, which shows the separation of the OOD and in-distribution (ID) data in the shortcut layer. Our method is compatible with different OOD detection scores and can generalize well to different architectures of networks. We demonstrate our method on various OOD datasets to show its competitive performances and provide reasonable hypotheses to explain why our method works. On the ImageNet benchmark, Weshort achieves state-of-the-art performance on the false positive rate (FPR95) and the area under the receiver operating characteristic (AUROC) on the family of post-hoc methods.
