Escaping the Big Data Paradigm with Compact Transformers

model-sym

With the rise of Transformers as the standard for language processing, and their advancements in computer vision, along with their unprecedented size and amounts of training data, many have come to believe that they are not suitable for small sets of data. This trend leads to great concerns, including but not limited to: limited availability of data in certain scientific domains and the exclusion of those with limited resource from research in the field. In this paper, we dispel the myth that transformers are “data hungry” and therefore can only be applied to large sets of data. We show for the first time that with the right size and tokenization, transformers can perform head-to-head with state-of-the-art CNNs on small datasets. Our model eliminates the requirement for class token and positional embeddings through a novel sequence pooling strategy and the use of convolutions. We show that compared to CNNs, our compact transformers have fewer parameters and MACs, while obtaining similar accuracies. Our method is flexible in terms of model size, and can have as little as 0.28M parameters and achieve reasonable results. It can reach an accuracy of 94.72% when training from scratch on CIFAR-10, which is comparable with modern CNN based approaches, and a significant improvement over previous Transformer based models. Our simple and compact design democratizes transformers by making them accessible to those equipped with basic computing resources and/or dealing with important small datasets.

https://arxiv.org/abs/2104.05704

传统的ViT模型在训练的时候需要大量的数据,为了解决这个问题,我们在本文中提出CCT架构,这个架构可以以少量数据参与训练达到与CNNs匹配的性能。我们的模型通过一种新的序列池化策略以摆脱对class token以及位置嵌入的依赖。实验结果表明,我们的模型可以以更少的参数和更快的推理速度实验与SOTA模型相似的性能。

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