The recent work CLIPA presents an inverse scaling law for CLIP training --
whereby the larger the image/text encoders used, the shorter the sequence
length of image/text tokens that can be applied in training. This finding
enables us to train high-performance CLIP models with significantly reduced
computations. Building upon this work, we hereby present CLIPA-v2 with two key
contributions. Technically, we find this inverse scaling law is also applicable
in the finetuning stage, enabling further reduction in computational needs.
Empirically, we explore CLIPA at scale, extending the experiments up to the
H/14 model with ~13B image-text pairs seen during training.
Our results are exciting -- by only allocating a budget of \$10,000, our CLIP
model achieves an impressive zero-shot ImageNet accuracy of 81.1%, surpassing
the prior best CLIP model (from OpenCLIP, 80.1%) by 1.0% and meanwhile reducing
the computational cost by ~39X. Moreover, with an additional investment of
$4,000, we can further elevate the zero-shot ImageNet accuracy to 81.8%. Our
code and models are available at this https URL

通过研究表明，CLIPA 可以通过反比例尺度律以更低的计算成本实现高性能的训练，可以在 finetuning 阶段进一步减少计算需求，从而实现零样本 Imagenet 准确率的提高。