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Dissecting Deep Neural Networks

lib:81b642e79536d363 (v1.0.0)

Authors: Haakon Robinson,Adil Rasheed,Omer San
ArXiv: 1910.03879
Document:  PDF  DOI 
Abstract URL: https://arxiv.org/abs/1910.03879v2

In exchange for large quantities of data and processing power, deep neural networks have yielded models that provide state of the art predication capabilities in many fields. However, a lack of strong guarantees on their behaviour have raised concerns over their use in safety-critical applications. A first step to understanding these networks is to develop alternate representations that allow for further analysis. It has been shown that neural networks with piecewise affine activation functions are themselves piecewise affine, with their domains consisting of a vast number of linear regions. So far, the research on this topic has focused on counting the number of linear regions, rather than obtaining explicit piecewise affine representations. This work presents a novel algorithm that can compute the piecewise affine form of any fully connected neural network with rectified linear unit activations.

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