arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1602.07261cs.CV
收藏

Inception-v4、Inception-ResNet及剩余连接对学习的影响

Inception-v4, Inception-ResNet and the Impact of Residual Connections on Learning

Google Inc.(谷歌公司)

Christian Szegedy, Sergey Ioffe, Vincent Vanhoucke, Alex Alemi

摘要:

近年来,非常深的卷积网络一直是图像识别性能最大进步的核心。一个例子是Inception架构,它已经被证明可以以相对较低的计算成本实现非常好的性能。最近,在2015年ILSVRC挑战赛中,残余连接的引入与更传统的架构相结合,产生了最先进的性能;其性能与最新一代Inception-v3网络相似。这就提出了一个问题:将Inception架构与剩余连接结合起来是否有任何好处。在这里,我们给出了明确的经验证据,表明使用剩余连接的训练显着加速了Inception网络的训练。也有一些证据表明,残余的Inception网络的性能要比没有残余连接的类似昂贵的Inception网络好得多。我们还提出了几个新的精简架构的残留和非残留的先启网络。这些变化显著提高了ILSVRC 2012分类任务的单帧识别性能。我们进一步展示了适当的激活缩放如何稳定非常广泛的残差Inception网络的训练。使用三个残差和一个Inception-v4的集合,我们在ImageNet分类(CLS)挑战的测试集上实现了3.08%的前5名错误

英文摘要:

Very deep convolutional networks have been central to the largest advances in image recognition performance in recent years. One example is the Inception architecture that has been shown to achieve very good performance at relatively low computational cost. Recently, the introduction of residual connections in conjunction with a more traditional architecture has yielded state-of-the-art performance in the 2015 ILSVRC challenge; its performance was similar to the latest generation Inception-v3 network. This raises the question of whether there are any benefit in combining the Inception architecture with residual connections. Here we give clear empirical evidence that training with residual connections accelerates the training of Inception networks significantly. There is also some evidence of residual Inception networks outperforming similarly expensive Inception networks without residual connections by a thin margin. We also present several new streamlined architectures for both residual and non-residual Inception networks. These variations improve the single-frame recognition performance on the ILSVRC 2012 classification task significantly. We further demonstrate how proper activation scaling stabilizes the training of very wide residual Inception networks. With an ensemble of three residual and one Inception-v4, we achieve 3.08 percent top-5 error on the test set of the ImageNet classification (CLS) challenge

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑