Fisher Pruning of Deep Nets for Facial Trait Classification.
arXiv: Computer Vision and Pattern Recognition(2018)
摘要
Although deep nets have resulted in high accuracies for various visual tasks, their computational and space requirements are prohibitively high for inclusion on devices without high-end GPUs. In this paper, we introduce a neuron/filter level pruning framework based on Fisheru0027s LDA which leads to high accuracies for a wide array of facial trait classification tasks, while significantly reducing space/computational complexities. The approach is general and can be applied to convolutional, fully-connected, and module-based deep structures, in all cases leveraging the high decorrelation of neuron activations found in the pre-decision layer and cross-layer deconv dependency. Experimental results on binary and multi-category facial traits from the LFWA and Adience datasets illustrate the frameworku0027s comparable/better performance to state-of-the-art pruning approaches and compact structures (e.g. SqueezeNet, MobileNet). Ours successfully maintains comparable accuracies even after discarding most parameters (98%-99% for VGG-16, 82% for GoogLeNet) and with significant FLOP reductions (83% for VGG-16, 64% for GoogLeNet).
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