Combating Label Noise With A General Surrogate Model For Sample Selection

• URL: http://arxiv.org/abs/2310.10463v1
• Date: Mon, 16 Oct 2023 14:43:27 GMT
• Title: Combating Label Noise With A General Surrogate Model For Sample Selection
• Authors: Chao Liang, Linchao Zhu, Humphrey Shi, Yi Yang
• Abstract summary: We propose to leverage the vision-language surrogate model CLIP to filter noisy samples automatically. We validate the effectiveness of our proposed method on both real-world and synthetic noisy datasets.
• Score: 84.61367781175984
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Modern deep learning systems are data-hungry. Learning with web data is one of the feasible solutions, but will introduce label noise inevitably, which can hinder the performance of deep neural networks. Sample selection is an effective way to deal with label noise. The key is to separate clean samples based on some criterion. Previous methods pay more attention to the small loss criterion where small-loss samples are regarded as clean ones. Nevertheless, such a strategy relies on the learning dynamics of each data instance. Some noisy samples are still memorized due to frequently occurring corrupted learning patterns. To tackle this problem, a training-free surrogate model is preferred, freeing from the effect of memorization. In this work, we propose to leverage the vision-language surrogate model CLIP to filter noisy samples automatically. CLIP brings external knowledge to facilitate the selection of clean samples with its ability of text-image alignment. Furthermore, a margin adaptive loss is designed to regularize the selection bias introduced by CLIP, providing robustness to label noise. We validate the effectiveness of our proposed method on both real-world and synthetic noisy datasets. Our method achieves significant improvement without CLIP involved during the inference stage.

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