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arXiv · 2112.02902

Interpretable Image Classification with Differentiable Prototypes Assignment

Dawid Rymarczyk·Łukasz Struski·Michał Górszczak·Koryna Lewandowska·Jacek Tabor·Bartosz Zieliński
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Abstract

We introduce ProtoPool, an interpretable image classification model with a pool of prototypes shared by the classes. The training is more straightforward than in the existing methods because it does not require the pruning stage. It is obtained by introducing a fully differentiable assignment of prototypes to particular classes. Moreover, we introduce a novel focal similarity function to focus the model on the rare foreground features. We show that ProtoPool obtains state-of-the-art accuracy on the CUB-200-2011 and the Stanford Cars datasets, substantially reducing the number of prototypes. We provide a theoretical analysis of the method and a user study to show that our prototypes are more distinctive than those obtained with competitive methods.

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Dawid Rymarczyk, Łukasz Struski, Michał Górszczak, Koryna Lewandowska, Jacek Tabor, Bartosz Zieliński. 2022-09-05. Interpretable Image Classification with Differentiable Prototypes Assignment. https://arxiv.org/abs/2112.02902

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