Dataset Condensation with Gradient Matching

Bo Zhao, Konda Reddy Mopuri, Hakan Bilen

Keywords: dataset condensation, data-efficient learning, image generation

Abstract: As the state-of-the-art machine learning methods in many fields rely on larger datasets, storing datasets and training models on them become significantly more expensive. This paper proposes a training set synthesis technique for data-efficient learning, called Dataset Condensation, that learns to condense large dataset into a small set of informative synthetic samples for training deep neural networks from scratch. We formulate this goal as a gradient matching problem between the gradients of deep neural network weights that are trained on the original and our synthetic data. We rigorously evaluate its performance in several computer vision benchmarks and demonstrate that it significantly outperforms the state-of-the-art methods. Finally we explore the use of our method in continual learning and neural architecture search and report promising gains when limited memory and computations are available.

One-sentence Summary: This paper proposes a training set synthesis technique that learns to produce a small set of informative samples for training deep neural networks from scratch in a small fraction of computational cost while achieving as close results as possible.

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Code: [ VICO-UoE/DatasetCondensation](https://github.com/VICO-UoE/DatasetCondensation) + [ 3 community implementations](https://paperswithcode.com/paper/?openreview=mSAKhLYLSsl)

Data: [CIFAR-10](https://paperswithcode.com/dataset/cifar-10), [Fashion-MNIST](https://paperswithcode.com/dataset/fashion-mnist), [MNIST](https://paperswithcode.com/dataset/mnist), [SVHN](https://paperswithcode.com/dataset/svhn), [USPS](https://paperswithcode.com/dataset/usps)

Community Implementations: [ 1 code implementation](https://www.catalyzex.com/paper/arxiv:2006.05929/code)