Knockoffs-SPR: Clean Sample Selection in Learning with Noisy Labels

• URL: http://arxiv.org/abs/2301.00545v4
• Date: Wed, 29 Nov 2023 10:10:04 GMT
• Title: Knockoffs-SPR: Clean Sample Selection in Learning with Noisy Labels
• Authors: Yikai Wang, Yanwei Fu, and Xinwei Sun
• Abstract summary: We propose a novel theoretically guaranteed clean sample selection framework for learning with noisy labels. Knockoffs-SPR can be regarded as a sample selection module for a standard supervised training pipeline. We further combine it with a semi-supervised algorithm to exploit the support of noisy data as unlabeled data.
• Score: 56.81761908354718
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A noisy training set usually leads to the degradation of the generalization and robustness of neural networks. In this paper, we propose a novel theoretically guaranteed clean sample selection framework for learning with noisy labels. Specifically, we first present a Scalable Penalized Regression (SPR) method, to model the linear relation between network features and one-hot labels. In SPR, the clean data are identified by the zero mean-shift parameters solved in the regression model. We theoretically show that SPR can recover clean data under some conditions. Under general scenarios, the conditions may be no longer satisfied; and some noisy data are falsely selected as clean data. To solve this problem, we propose a data-adaptive method for Scalable Penalized Regression with Knockoff filters (Knockoffs-SPR), which is provable to control the False-Selection-Rate (FSR) in the selected clean data. To improve the efficiency, we further present a split algorithm that divides the whole training set into small pieces that can be solved in parallel to make the framework scalable to large datasets. While Knockoffs-SPR can be regarded as a sample selection module for a standard supervised training pipeline, we further combine it with a semi-supervised algorithm to exploit the support of noisy data as unlabeled data. Experimental results on several benchmark datasets and real-world noisy datasets show the effectiveness of our framework and validate the theoretical results of Knockoffs-SPR. Our code and pre-trained models are available at https://github.com/Yikai-Wang/Knockoffs-SPR.

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