SeReNe: Sensitivity based Regularization of Neurons for Structured Sparsity in Neural Networks

• URL: http://arxiv.org/abs/2102.03773v1
• Date: Sun, 7 Feb 2021 10:53:30 GMT
• Title: SeReNe: Sensitivity based Regularization of Neurons for Structured Sparsity in Neural Networks
• Authors: Enzo Tartaglione, Andrea Bragagnolo, Francesco Odierna, Attilio Fiandrotti, Marco Grangetto
• Abstract summary: SeReNe is a method for learning sparse topologies with a structure. We define the sensitivity of a neuron as the variation of the network output. By including the neuron sensitivity in the cost function as a regularization term, we areable to prune neurons with low sensitivity.
• Score: 13.60023740064471
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Deep neural networks include millions of learnable parameters, making their deployment over resource-constrained devices problematic. SeReNe (Sensitivity-based Regularization of Neurons) is a method for learning sparse topologies with a structure, exploiting neural sensitivity as a regularizer. We define the sensitivity of a neuron as the variation of the network output with respect to the variation of the activity of the neuron. The lower the sensitivity of a neuron, the less the network output is perturbed if the neuron output changes. By including the neuron sensitivity in the cost function as a regularization term, we areable to prune neurons with low sensitivity. As entire neurons are pruned rather then single parameters, practical network footprint reduction becomes possible. Our experimental results on multiple network architectures and datasets yield competitive compression ratios with respect to state-of-the-art references.

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