self training with noisy student improves imagenet classification self training with noisy student improves imagenet classification

SelfSelf-training with Noisy Student improves ImageNet classification Stochastic depth is proposed, a training procedure that enables the seemingly contradictory setup to train short networks and use deep networks at test time and reduces training time substantially and improves the test error significantly on almost all data sets that were used for evaluation. In particular, we set the survival probability in stochastic depth to 0.8 for the final layer and follow the linear decay rule for other layers. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Self-training with Noisy Student improves ImageNet classification Original paper: https://arxiv.org/pdf/1911.04252.pdf Authors: Qizhe Xie, Eduard Hovy, Minh-Thang Luong, Quoc V. Le HOYA012 Introduction EfficientNet ImageNet SOTA EfficientNet The algorithm is basically self-training, a method in semi-supervised learning (. A. Krizhevsky, I. Sutskever, and G. E. Hinton, Temporal ensembling for semi-supervised learning, Pseudo-label: the simple and efficient semi-supervised learning method for deep neural networks, Workshop on Challenges in Representation Learning, ICML, Certainty-driven consistency loss for semi-supervised learning, C. Liu, B. Zoph, M. Neumann, J. Shlens, W. Hua, L. Li, L. Fei-Fei, A. Yuille, J. Huang, and K. Murphy, R. G. Lopes, D. Yin, B. Poole, J. Gilmer, and E. D. Cubuk, Improving robustness without sacrificing accuracy with patch gaussian augmentation, Y. Luo, J. Zhu, M. Li, Y. Ren, and B. Zhang, Smooth neighbors on teacher graphs for semi-supervised learning, L. Maale, C. K. Snderby, S. K. Snderby, and O. Winther, A. Madry, A. Makelov, L. Schmidt, D. Tsipras, and A. Vladu, Towards deep learning models resistant to adversarial attacks, D. Mahajan, R. Girshick, V. Ramanathan, K. He, M. Paluri, Y. Li, A. Bharambe, and L. van der Maaten, Exploring the limits of weakly supervised pretraining, T. Miyato, S. Maeda, S. Ishii, and M. Koyama, Virtual adversarial training: a regularization method for supervised and semi-supervised learning, IEEE transactions on pattern analysis and machine intelligence, A. Najafi, S. Maeda, M. Koyama, and T. Miyato, Robustness to adversarial perturbations in learning from incomplete data, J. Ngiam, D. Peng, V. Vasudevan, S. Kornblith, Q. V. Le, and R. Pang, Robustness properties of facebooks resnext wsl models, Adversarial dropout for supervised and semi-supervised learning, Lessons from building acoustic models with a million hours of speech, IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), S. Qiao, W. Shen, Z. Zhang, B. Wang, and A. Yuille, Deep co-training for semi-supervised image recognition, I. Radosavovic, P. Dollr, R. Girshick, G. Gkioxari, and K. He, Data distillation: towards omni-supervised learning, A. Rasmus, M. Berglund, M. Honkala, H. Valpola, and T. Raiko, Semi-supervised learning with ladder networks, E. Real, A. Aggarwal, Y. Huang, and Q. V. Le, Proceedings of the AAAI Conference on Artificial Intelligence, B. Recht, R. Roelofs, L. Schmidt, and V. Shankar. We found that self-training is a simple and effective algorithm to leverage unlabeled data at scale. Noisy student-teacher training for robust keyword spotting, Unsupervised Self-training Algorithm Based on Deep Learning for Optical 2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition. 3.5B weakly labeled Instagram images. The best model in our experiments is a result of iterative training of teacher and student by putting back the student as the new teacher to generate new pseudo labels. The abundance of data on the internet is vast. This work adopts the noisy-student learning method, and adopts 3D nnUNet as the segmentation model during the experiments, since No new U-Net is the state-of-the-art medical image segmentation method and designs task-specific pipelines for different tasks. By clicking accept or continuing to use the site, you agree to the terms outlined in our. In the above experiments, iterative training was used to optimize the accuracy of EfficientNet-L2 but here we skip it as it is difficult to use iterative training for many experiments. PDF Self-Training with Noisy Student Improves ImageNet Classification The model with Noisy Student can successfully predict the correct labels of these highly difficult images. The main difference between Data Distillation and our method is that we use the noise to weaken the student, which is the opposite of their approach of strengthening the teacher by ensembling. During this process, we kept increasing the size of the student model to improve the performance. In Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (pp. This result is also a new state-of-the-art and 1% better than the previous best method that used an order of magnitude more weakly labeled data [ 44, 71]. This invariance constraint reduces the degrees of freedom in the model. This work introduces two challenging datasets that reliably cause machine learning model performance to substantially degrade and curates an adversarial out-of-distribution detection dataset called IMAGENET-O, which is the first out- of-dist distribution detection dataset created for ImageNet models. A tag already exists with the provided branch name. A common workaround is to use entropy minimization or ramp up the consistency loss. EfficientNet-L1 approximately doubles the training time of EfficientNet-L0. Iterative training is not used here for simplicity. Le. Scaling width and resolution by c leads to c2 times training time and scaling depth by c leads to c times training time. Then we finetune the model with a larger resolution for 1.5 epochs on unaugmented labeled images. It is experimentally validated that, for a target test resolution, using a lower train resolution offers better classification at test time, and a simple yet effective and efficient strategy to optimize the classifier performance when the train and test resolutions differ is proposed. Notice, Smithsonian Terms of It is expensive and must be done with great care. When dropout and stochastic depth are used, the teacher model behaves like an ensemble of models (when it generates the pseudo labels, dropout is not used), whereas the student behaves like a single model. Diagnostics | Free Full-Text | A Collaborative Learning Model for Skin . We thank the Google Brain team, Zihang Dai, Jeff Dean, Hieu Pham, Colin Raffel, Ilya Sutskever and Mingxing Tan for insightful discussions, Cihang Xie for robustness evaluation, Guokun Lai, Jiquan Ngiam, Jiateng Xie and Adams Wei Yu for feedbacks on the draft, Yanping Huang and Sameer Kumar for improving TPU implementation, Ekin Dogus Cubuk and Barret Zoph for help with RandAugment, Yanan Bao, Zheyun Feng and Daiyi Peng for help with the JFT dataset, Olga Wichrowska and Ola Spyra for help with infrastructure. However, during the learning of the student, we inject noise such as dropout, stochastic depth and data augmentation via RandAugment to the student so that the student generalizes better than the teacher. If nothing happens, download Xcode and try again. EfficientNet with Noisy Student produces correct top-1 predictions (shown in. As shown in Figure 1, Noisy Student leads to a consistent improvement of around 0.8% for all model sizes. [50] used knowledge distillation on unlabeled data to teach a small student model for speech recognition. Self-training with Noisy Student improves ImageNet classification Self-training with Noisy Student improves ImageNet classification sign in The pseudo labels can be soft (a continuous distribution) or hard (a one-hot distribution). As shown in Figure 3, Noisy Student leads to approximately 10% improvement in accuracy even though the model is not optimized for adversarial robustness. The comparison is shown in Table 9. The top-1 accuracy is simply the average top-1 accuracy for all corruptions and all severity degrees. To noise the student, we use dropout[63], data augmentation[14] and stochastic depth[29] during its training. We iterate this process by putting back the student as the teacher. CLIP (Contrastive Language-Image Pre-training) builds on a large body of work on zero-shot transfer, natural language supervision, and multimodal learning.The idea of zero-data learning dates back over a decade [^reference-8] but until recently was mostly studied in computer vision as a way of generalizing to unseen object categories. "Self-training with Noisy Student improves ImageNet classification" pytorch implementation. We determine number of training steps and the learning rate schedule by the batch size for labeled images. to use Codespaces. Especially unlabeled images are plentiful and can be collected with ease. 10687-10698). Then by using the improved B7 model as the teacher, we trained an EfficientNet-L0 student model. Their framework is highly optimized for videos, e.g., prediction on which frame to use in a video, which is not as general as our work. Astrophysical Observatory. Noisy Student Training extends the idea of self-training and distillation with the use of equal-or-larger student models and noise added to the student during learning. For smaller models, we set the batch size of unlabeled images to be the same as the batch size of labeled images. To date (2020) we will introduce "Noisy Student Training", which is a state-of-the-art model.The idea is to extend self-training and Distillation, a paper that shows that by adding three noises and distilling multiple times, the student model will have better generalization performance than the teacher model. Since we use soft pseudo labels generated from the teacher model, when the student is trained to be exactly the same as the teacher model, the cross entropy loss on unlabeled data would be zero and the training signal would vanish. Distillation Survey : Noisy Student | 9to5Tutorial ; 2006)[book reviews], Semi-supervised deep learning with memory, Proceedings of the European Conference on Computer Vision (ECCV), Xception: deep learning with depthwise separable convolutions, K. Clark, M. Luong, C. D. Manning, and Q. V. Le, Semi-supervised sequence modeling with cross-view training, E. D. Cubuk, B. Zoph, D. Mane, V. Vasudevan, and Q. V. Le, AutoAugment: learning augmentation strategies from data, Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, E. D. Cubuk, B. Zoph, J. Shlens, and Q. V. Le, RandAugment: practical data augmentation with no separate search, Z. Dai, Z. Yang, F. Yang, W. W. Cohen, and R. R. Salakhutdinov, Good semi-supervised learning that requires a bad gan, T. Furlanello, Z. C. Lipton, M. Tschannen, L. Itti, and A. Anandkumar, A. Galloway, A. Golubeva, T. Tanay, M. Moussa, and G. W. Taylor, R. Geirhos, P. Rubisch, C. Michaelis, M. Bethge, F. A. Wichmann, and W. Brendel, ImageNet-trained CNNs are biased towards texture; increasing shape bias improves accuracy and robustness, J. Gilmer, L. Metz, F. Faghri, S. S. Schoenholz, M. Raghu, M. Wattenberg, and I. Goodfellow, I. J. Goodfellow, J. Shlens, and C. Szegedy, Explaining and harnessing adversarial examples, Semi-supervised learning by entropy minimization, Advances in neural information processing systems, K. Gu, B. Yang, J. Ngiam, Q. This work systematically benchmark state-of-the-art methods that use unlabeled data, including domain-invariant, self-training, and self-supervised methods, and shows that their success on WILDS is limited. We then train a larger EfficientNet as a student model on the combination of labeled and pseudo labeled images. Noisy StudentImageNetEfficientNet-L2state-of-the-art. During the generation of the pseudo labels, the teacher is not noised so that the pseudo labels are as accurate as possible. We present Noisy Student Training, a semi-supervised learning approach that works well even when labeled data is abundant. Self-Training : Noisy Student : For instance, on ImageNet-1k, Layer Grafted Pre-training yields 65.5% Top-1 accuracy in terms of 1% few-shot learning with ViT-B/16, which improves MIM and CL baselines by 14.4% and 2.1% with no bells and whistles. This paper presents a unique study of transfer learning with large convolutional networks trained to predict hashtags on billions of social media images and shows improvements on several image classification and object detection tasks, and reports the highest ImageNet-1k single-crop, top-1 accuracy to date. A new scaling method is proposed that uniformly scales all dimensions of depth/width/resolution using a simple yet highly effective compound coefficient and is demonstrated the effectiveness of this method on scaling up MobileNets and ResNet. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . Soft pseudo labels lead to better performance for low confidence data. We then perform data filtering and balancing on this corpus. Finally, we iterate the algorithm a few times by treating the student as a teacher to generate new pseudo labels and train a new student. Classification of Socio-Political Event Data, SLADE: A Self-Training Framework For Distance Metric Learning, Self-Training with Differentiable Teacher, https://github.com/hendrycks/natural-adv-examples/blob/master/eval.py. But during the learning of the student, we inject noise such as data As noise injection methods are not used in the student model, and the student model was also small, it is more difficult to make the student better than teacher. The learning rate starts at 0.128 for labeled batch size 2048 and decays by 0.97 every 2.4 epochs if trained for 350 epochs or every 4.8 epochs if trained for 700 epochs. We find that using a batch size of 512, 1024, and 2048 leads to the same performance. Here we use unlabeled images to improve the state-of-the-art ImageNet accuracy and show that the accuracy gain has an outsized impact on robustness. Please refer to [24] for details about mFR and AlexNets flip probability. Models are available at this https URL. In addition to improving state-of-the-art results, we conduct additional experiments to verify if Noisy Student can benefit other EfficienetNet models. Figure 1(b) shows images from ImageNet-C and the corresponding predictions. This result is also a new state-of-the-art and 1% better than the previous best method that used an order of magnitude more weakly labeled data [ 44, 71]. ImageNet-A top-1 accuracy from 16.6 As a comparison, our method only requires 300M unlabeled images, which is perhaps more easy to collect. We use stochastic depth[29], dropout[63] and RandAugment[14]. Code is available at https://github.com/google-research/noisystudent. It is found that training and scaling strategies may matter more than architectural changes, and further, that the resulting ResNets match recent state-of-the-art models. Noisy Student leads to significant improvements across all model sizes for EfficientNet. Infer labels on a much larger unlabeled dataset. In both cases, we gradually remove augmentation, stochastic depth and dropout for unlabeled images, while keeping them for labeled images. We then train a larger EfficientNet as a student model on the combination of labeled and pseudo labeled images. Self-Training With Noisy Student Improves ImageNet Classification For example, with all noise removed, the accuracy drops from 84.9% to 84.3% in the case with 130M unlabeled images and drops from 83.9% to 83.2% in the case with 1.3M unlabeled images. Self-Training With Noisy Student Improves ImageNet Classification This accuracy is 1.0% better than the previous state-of-the-art ImageNet accuracy which requires 3.5B weakly labeled Instagram images. Overall, EfficientNets with Noisy Student provide a much better tradeoff between model size and accuracy when compared with prior works. We improved it by adding noise to the student to learn beyond the teachers knowledge. Please refer to [24] for details about mCE and AlexNets error rate. It has three main steps: train a teacher model on labeled images use the teacher to generate pseudo labels on unlabeled images Afterward, we further increased the student model size to EfficientNet-L2, with the EfficientNet-L1 as the teacher. Papers With Code is a free resource with all data licensed under. Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. Why Self-training with Noisy Students beats SOTA Image classification Noisy Student self-training is an effective way to leverage unlabelled datasets and improving accuracy by adding noise to the student model while training so it learns beyond the teacher's knowledge. In our experiments, we use dropout[63], stochastic depth[29], data augmentation[14] to noise the student. Noisy Student Training seeks to improve on self-training and distillation in two ways. On robustness test sets, it improves ImageNet-A top-1 accuracy from 61.0% to . Noisy Student Training is based on the self-training framework and trained with 4 simple steps: For ImageNet checkpoints trained by Noisy Student Training, please refer to the EfficientNet github. Self-Training With Noisy Student Improves ImageNet Classification This material is presented to ensure timely dissemination of scholarly and technical work. Specifically, as all classes in ImageNet have a similar number of labeled images, we also need to balance the number of unlabeled images for each class. We iterate this process by In particular, we first perform normal training with a smaller resolution for 350 epochs. We use EfficientNet-B0 as both the teacher model and the student model and compare using Noisy Student with soft pseudo labels and hard pseudo labels. We present a simple self-training method that achieves 87.4 For this purpose, we use the recently developed EfficientNet architectures[69] because they have a larger capacity than ResNet architectures[23]. Chum, Label propagation for deep semi-supervised learning, D. P. Kingma, S. Mohamed, D. J. Rezende, and M. Welling, Semi-supervised learning with deep generative models, Semi-supervised classification with graph convolutional networks. Since a teacher models confidence on an image can be a good indicator of whether it is an out-of-domain image, we consider the high-confidence images as in-domain images and the low-confidence images as out-of-domain images. Different types of. Self-training with Noisy Student improves ImageNet classification. Selected images from robustness benchmarks ImageNet-A, C and P. Test images from ImageNet-C underwent artificial transformations (also known as common corruptions) that cannot be found on the ImageNet training set. Apart from self-training, another important line of work in semi-supervised learning[9, 85] is based on consistency training[6, 4, 53, 36, 70, 45, 41, 51, 10, 12, 49, 2, 38, 72, 74, 5, 81]. 1ImageNetTeacher NetworkStudent Network 2T [JFT dataset] 3 [JFT dataset]ImageNetStudent Network 4Student Network1DropOut21 1S-TTSS equal-or-larger student model Training these networks from only a few annotated examples is challenging while producing manually annotated images that provide supervision is tedious. sign in (or is it just me), Smithsonian Privacy unlabeled images. The swing in the picture is barely recognizable by human while the Noisy Student model still makes the correct prediction. Flip probability is the probability that the model changes top-1 prediction for different perturbations. This work proposes a novel architectural unit, which is term the Squeeze-and-Excitation (SE) block, that adaptively recalibrates channel-wise feature responses by explicitly modelling interdependencies between channels and shows that these blocks can be stacked together to form SENet architectures that generalise extremely effectively across different datasets. The biggest gain is observed on ImageNet-A: our method achieves 3.5x higher accuracy on ImageNet-A, going from 16.6% of the previous state-of-the-art to 74.2% top-1 accuracy. We will then show our results on ImageNet and compare them with state-of-the-art models. [^reference-9] [^reference-10] A critical insight was to . These works constrain model predictions to be invariant to noise injected to the input, hidden states or model parameters. However, during the learning of the student, we inject noise such as dropout, stochastic depth and data augmentation via RandAugment to the student so that the student generalizes better than the teacher. Self-training with Noisy Student improves ImageNet classification. Noisy Student Training extends the idea of self-training and distillation with the use of equal-or-larger student models and noise added to the student during learning. Use a model to predict pseudo-labels on the filtered data: This is not an officially supported Google product. 27.8 to 16.1. International Conference on Machine Learning, Learning extraction patterns for subjective expressions, Proceedings of the 2003 conference on Empirical methods in natural language processing, A. Roy Chowdhury, P. Chakrabarty, A. Singh, S. Jin, H. Jiang, L. Cao, and E. G. Learned-Miller, Automatic adaptation of object detectors to new domains using self-training, T. Salimans, I. Goodfellow, W. Zaremba, V. Cheung, A. Radford, and X. Chen, Probability of error of some adaptive pattern-recognition machines, W. Shi, Y. Gong, C. Ding, Z. MaXiaoyu Tao, and N. Zheng, Transductive semi-supervised deep learning using min-max features, C. Simon-Gabriel, Y. Ollivier, L. Bottou, B. Schlkopf, and D. Lopez-Paz, First-order adversarial vulnerability of neural networks and input dimension, Very deep convolutional networks for large-scale image recognition, N. Srivastava, G. Hinton, A. Krizhevsky, I. Sutskever, and R. Salakhutdinov, Dropout: a simple way to prevent neural networks from overfitting. Secondly, to enable the student to learn a more powerful model, we also make the student model larger than the teacher model. If nothing happens, download Xcode and try again. Here we show the evidence in Table 6, noise such as stochastic depth, dropout and data augmentation plays an important role in enabling the student model to perform better than the teacher. Learn more. Notably, EfficientNet-B7 achieves an accuracy of 86.8%, which is 1.8% better than the supervised model. We also study the effects of using different amounts of unlabeled data. We use the standard augmentation instead of RandAugment in this experiment. Noisy Student Explained | Papers With Code self-mentoring outperforms data augmentation and self training. For example, without Noisy Student, the model predicts bullfrog for the image shown on the left of the second row, which might be resulted from the black lotus leaf on the water. Noisy Student Training is based on the self-training framework and trained with 4-simple steps: This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. The main difference between our method and knowledge distillation is that knowledge distillation does not consider unlabeled data and does not aim to improve the student model. While removing noise leads to a much lower training loss for labeled images, we observe that, for unlabeled images, removing noise leads to a smaller drop in training loss. Then, EfficientNet-L1 is scaled up from EfficientNet-L0 by increasing width. This paper proposes to search for an architectural building block on a small dataset and then transfer the block to a larger dataset and introduces a new regularization technique called ScheduledDropPath that significantly improves generalization in the NASNet models. Whether the model benefits from more unlabeled data depends on the capacity of the model since a small model can easily saturate, while a larger model can benefit from more data. We use the same architecture for the teacher and the student and do not perform iterative training. Lastly, we follow the idea of compound scaling[69] and scale all dimensions to obtain EfficientNet-L2. This article demonstrates the first tool based on a convolutional Unet++ encoderdecoder architecture for the semantic segmentation of in vitro angiogenesis simulation images followed by the resulting mask postprocessing for data analysis by experts. We evaluate the best model, that achieves 87.4% top-1 accuracy, on three robustness test sets: ImageNet-A, ImageNet-C and ImageNet-P. ImageNet-C and P test sets[24] include images with common corruptions and perturbations such as blurring, fogging, rotation and scaling. to use Codespaces. putting back the student as the teacher. We use the labeled images to train a teacher model using the standard cross entropy loss. Agreement NNX16AC86A, Is ADS down? task. Self-Training With Noisy Student Improves ImageNet Classification @article{Xie2019SelfTrainingWN, title={Self-Training With Noisy Student Improves ImageNet Classification}, author={Qizhe Xie and Eduard H. Hovy and Minh-Thang Luong and Quoc V. Le}, journal={2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)}, year={2019 . We call the method self-training with Noisy Student to emphasize the role that noise plays in the method and results. Our procedure went as follows. If nothing happens, download GitHub Desktop and try again. We obtain unlabeled images from the JFT dataset [26, 11], which has around 300M images. Ranked #14 on For simplicity, we experiment with using 1128,164,132,116,14 of the whole data by uniformly sampling images from the the unlabeled set though taking the images with highest confidence leads to better results. It extends the idea of self-training and distillation with the use of equal-or-larger student models and noise added to the student during learning. We used the version from [47], which filtered the validation set of ImageNet. During the generation of the pseudo labels, the teacher is not noised so that the pseudo labels are as accurate as possible. ImageNet . The method, named self-training with Noisy Student, also benefits from the large capacity of EfficientNet family. Work fast with our official CLI. We then train a larger EfficientNet as a student model on the combination of labeled and pseudo labeled images. EfficientNet-L0 is wider and deeper than EfficientNet-B7 but uses a lower resolution, which gives it more parameters to fit a large number of unlabeled images with similar training speed. The architecture specifications of EfficientNet-L0, L1 and L2 are listed in Table 7. We then train a larger EfficientNet as a student model on the combination of labeled and pseudo labeled images. When data augmentation noise is used, the student must ensure that a translated image, for example, should have the same category with a non-translated image. 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