Title: Siamese Capsule Networks,
Abstract: Capsule Networks have shown encouraging results on \textit{defacto} benchmark
computer vision datasets such as MNIST, CIFAR and smallNORB. Although, they are
yet to be tested on tasks where (1) the entities detected inherently have more
complex internal representations and (2) there are very few instances per class
to learn from and (3) where point-wise classification is not suitable. Hence,
this paper carries out experiments on face verification in both controlled and
uncontrolled settings that together address these points. In doing so we
introduce \textit{Siamese Capsule Networks}, a new variant that can be used for
pairwise learning tasks. The model is trained using contrastive loss with
$\ell_2$-normalized capsule encoded pose features. We find that \textit{Siamese
Capsule Networks} perform well against strong baselines on both pairwise
learning datasets, yielding best results in the few-shot learning setting where
image pairs in the test set contain unseen subjects.