AAAI - Curriculum Labeling- Self-paced Pseudo-Labeling for Semi-Supervised Learning

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Title: Curriculum Labeling- Self-paced Pseudo-Labeling for Semi-Supervised Learning”

at the Thirty-Fifth AAAI Conference on Artificial Intelligence (AAAI-21) (acceptance rate: 21%))

authors: Paola Cascante-Bonilla, Fuwen Tan, Yanjun Qi, Vicente Ordonez

Paper Arxiv


In this paper we revisit the idea of pseudo-labeling in the context of semi-supervised learning where a learning algorithm has access to a small set of labeled samples and a large set of unlabeled samples. Pseudo-labeling works by applying pseudo-labels to samples in the unlabeled set by using a model trained on the combination of the labeled samples and any previously pseudo-labeled samples, and iteratively repeating this process in a self-training cycle. Current methods seem to have abandoned this approach in favor of consistency regularization methods that train models under a combination of different styles of self-supervised losses on the unlabeled samples and standard supervised losses on the labeled samples. We empirically demonstrate that pseudo-labeling can in fact be competitive with the state-of-the-art, while being more resilient to out-of-distribution samples in the unlabeled set. We identify two key factors that allow pseudo-labeling to achieve such remarkable results (1) applying curriculum learning principles and (2) avoiding concept drift by restarting model parameters before each self-training cycle. We obtain 94.91% accuracy on CIFAR-10 using only 4,000 labeled samples, and 68.87% top-1 accuracy on Imagenet-ILSVRC using only 10% of the labeled samples. The code is available at following https URL



      title={Measuring Visual Generalization in Continuous Control from Pixels}, 
      author={Jake Grigsby and Yanjun Qi},

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