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arXiv 2003.13623cs.CVcs.LG

Laplacian Denoising Autoencoder

University of Oxford(牛津大学);Tencent AI Lab(腾讯人工智能实验室);University of Technology Sydney(悉尼科技大学);South China University of Technology(华南理工大学);University of Oregon(俄勒冈大学);City University of Hong Kong(香港城市大学);University of Illinois at Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校)

Jianbo Jiao, Linchao Bao, Yunchao Wei, Shengfeng He, Honghui Shi, Rynson Lau, Thomas S. Huang

英文摘要:

While deep neural networks have been shown to perform remarkably well in many machine learning tasks, labeling a large amount of ground truth data for supervised training is usually very costly to scale. Therefore, learning robust representations with unlabeled data is critical in relieving human effort and vital for many downstream tasks. Recent advances in unsupervised and self-supervised learning approaches for visual data have benefited greatly from domain knowledge. Here we are interested in a more generic unsupervised learning framework that can be easily generalized to other domains. In this paper, we propose to learn data representations with a novel type of denoising autoencoder, where the noisy input data is generated by corrupting latent clean data in the gradient domain. This can be naturally generalized to span multiple scales with a Laplacian pyramid representation of the input data. In this way, the agent learns more robust representations that exploit the underlying data structures across multiple scales. Experiments on several visual benchmarks demonstrate that better representations can be learned with the proposed approach, compared to its counterpart with single-scale corruption and other approaches. Furthermore, we also demonstrate that the learned representations perform well when transferring to other downstream vision tasks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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