LayerCollapse: Adaptive compression of neural networks

• URL: http://arxiv.org/abs/2311.17943v2
• Date: Thu, 8 Feb 2024 20:28:28 GMT
• Title: LayerCollapse: Adaptive compression of neural networks
• Authors: Soheil Zibakhsh Shabgahi, Mohammad Sohail Shariff, Farinaz Koushanfar
• Abstract summary: We present LayerCollapse, a form of structured pruning to reduce the depth of fully connected layers. We develop a novel regularizer allowing for post-training compression without finetuning, while having limited impact on performance.
• Score: 15.248788216228842
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Handling the ever-increasing scale of contemporary deep learning and transformer-based models poses a significant challenge. Overparameterized Transformer networks outperform prior art in Natural Language processing and Computer Vision. These models contain hundreds of millions of parameters, demanding significant computational resources and making them prone to overfitting. In this work we present LayerCollapse, a form of structured pruning to reduce the depth of fully connected layers. We develop a novel regularizer allowing for post-training compression without finetuning, while having limited impact on performance. LayerCollapse controls model expressiveness with regularization on the activations between fully connected layers, modulating the linearity of activation functions. A linear activation function reduces the rank of the transformation to the rank of the corresponding linear transformation. We demonstrate the effectiveness of LayerCollapse by showing its compression capabilities in sentimental analysis and image classification benchmarks. Moreover we show LayerCollapse is an effective compression aware regularization method in a language modeling benchmark.

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