BBN: Bilateral-Branch Network with Cumulative Learning for Long-Tailed Visual Recognition
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Abstract (arXiv)
Our work focuses on tackling the challenging but natural visual recognition task of long-tailed data distribution (i.e., a few classes occupy most of the data, while most classes have rarely few samples). In the literature, class re-balancing strategies (e.g., re-weighting and re-sampling) are the prominent and effective methods proposed to alleviate the extreme imbalance for dealing with long-tailed problems. In this paper, we firstly discover that these re-balancing methods achieving satisfactory recognition accuracy owe to that they could significantly promote the classifier learning of deep networks. However, at the same time, they will unexpectedly damage the representative ability of the learned deep features to some extent. Therefore, we propose a unified Bilateral-Branch Network (BBN) to take care of both representation learning and classifier learning simultaneously, where each branch does perform its own duty separately. In particular, our BBN model is further equipped with a novel cumulative learning strategy, which is designed to first learn the universal patterns and then pay attention to the tail data gradually. Extensive experiments on four benchmark datasets, including the large-scale iNaturalist ones, justify that the proposed BBN can significantly outperform state-of-the-art methods. Furthermore, validation experiments can demonstrate both our preliminary discovery and effectiveness of tailored designs in BBN for long-tailed problems. Our method won the first place in the iNaturalist 2019 large scale species classification competition, and our code is open-source and available at https://github.com/Megvii-Nanjing/BBN.
Key facts. Cited by 403 papers in the map (data through 14 Oct 2026). First posted on arXiv 5 Dec 2019.
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Citing papers per year: 2021: 84; 2022: 88; 2023: 79; 2024: 84; 2025: 39; 2026: 29.
403 papers.
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- 2021Deep Long-Tailed Learning: A Surveycited by 417
- 2021Parametric Contrastive Learningcited by 217
- 2021Improving Calibration for Long-Tailed Recognitioncited by 212
- 2021Distribution Alignment: A Unified Framework for Long-tail Visual Recognitioncited by 198
- 2021CReST: A Class-Rebalancing Self-Training Framework for Imbalanced Semi-Supervised Learningcited by 175
- 2022Balanced Contrastive Learning for Long-Tailed Visual Recognitioncited by 144
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- 2021Fine-Grained Image Analysis with Deep Learning: A Surveycited by 135
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- 2021Contrastive Learning based Hybrid Networks for Long-Tailed Image Classificationcited by 130
- 2022Long-Tailed Recognition via Weight Balancingcited by 107
- 2022Retrieval Augmented Classification for Long-Tail Visual Recognitioncited by 106
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- 2021ResLT: Residual Learning for Long-tailed Recognitioncited by 96
- 2021Self-Supervised Aggregation of Diverse Experts for Test-Agnostic Long-Tailed Recognitioncited by 95
- 2021Medical Visual Question Answering: A Surveycited by 93
- 2022Balanced MSE for Imbalanced Visual Regressioncited by 89
- 2021ACE: Ally Complementary Experts for Solving Long-Tailed Recognition in One-Shotcited by 86
- 2021Distributional Robustness Loss for Long-tail Learningcited by 84
- 2021FedProc: Prototypical Contrastive Federated Learning on Non-IID datacited by 81
- 2021FASA: Feature Augmentation and Sampling Adaptation for Long-Tailed Instance Segmentationcited by 76
- 2022A Survey on Long-Tailed Visual Recognitioncited by 75
- 2023Long-tailed Visual Recognition via Gaussian Clouded Logit Adjustmentcited by 75
- 2021Label-Imbalanced and Group-Sensitive Classification under Overparameterizationcited by 74
- 2021Self Supervision to Distillation for Long-Tailed Visual Recognitioncited by 73
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- 2022Nested Collaborative Learning for Long-Tailed Visual Recognitioncited by 63
- 2021RSG: A Simple but Effective Module for Learning Imbalanced Datasetscited by 61
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- 2023Long-Tail Learning with Foundation Model: Heavy Fine-Tuning Hurtscited by 58
- 2021DASO: Distribution-Aware Semantics-Oriented Pseudo-label for Imbalanced Semi-Supervised Learningcited by 51
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- 2021Adversarial Robustness under Long-Tailed Distributioncited by 50
- 2021A Simple Long-Tailed Recognition Baseline via Vision-Language Modelcited by 49
- 2022AutoBalance: Optimized Loss Functions for Imbalanced Datacited by 49
- 2022Generalized Parametric Contrastive Learningcited by 45
- 2022Partial and Asymmetric Contrastive Learning for Out-of-Distribution Detection in Long-Tailed Recognitioncited by 44
- 2022Neural Collapse Inspired Attraction-Repulsion-Balanced Loss for Imbalanced Learningcited by 43
- 2023Global and Local Mixture Consistency Cumulative Learning for Long-tailed Visual Recognitionscited by 43
- 2024Probabilistic Contrastive Learning for Long-Tailed Visual Recognitioncited by 42
- 2021CoSSL: Co-Learning of Representation and Classifier for Imbalanced Semi-Supervised Learningcited by 41
- 2022TAM: Topology-Aware Margin Loss for Class-Imbalanced Node Classificationcited by 41
- 2021Towards Calibrated Model for Long-Tailed Visual Recognition from Prior Perspectivecited by 39
- 2021Faster Meta Update Strategy for Noise-Robust Deep Learningcited by 38
50 most cited of 403 All 403 (JSON)
- 2026OFBD: Object-Focused Background Debiasing for Long-Tailed Learning29 Sep 2026
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- 2026VICAL: Vicinal Consistency Alignment for Long-Tailed Visual Recognition4 Sep 2026
- 2026Information Density Imbalance in Visual Object Detection2 Sep 2026
- 2026CLEAR: Class-wise Expert Aggregation with Structured Sampling for Long-Tailed Classification11 Aug 2026
- 2026Beyond Static Costs: Learning-Dynamics Aware Loss Functions for Long-Tailed Classification28 Jul 2026
- 2026A Strong Balanced-Softmax Classifier-Retraining Baseline for Long-Tailed Recognition10 Jul 2026
- 2026Gen2Balance: Generative Balancing for Long-Tailed Video Action Recognition21 Jun 2026
- 2026Learning to Annotate Delayed and False AEB Events: A Practical System for Extreme Class Imbalance and Asymmetric Label Noise17 Jun 2026
- 2026A Multi-Modal Framework with Cross-Subject Pseudo-Labeling and Semantic Alignment for Micro-Gesture Recognition11 Jun 2026
- 2026Why Not Hyperparameter-Friendly Optimisation? A Monotonic Adaptive Norm Rescaling Approach For Long-Tailed Recognition1 Jun 2026
38 more
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- 2026Class Confidence Aware Reweighting for Long Tailed Learning22 Jan 2026
- 2025Improved Balanced Classification with Theoretically Grounded Loss Functions30 Dec 2025
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- 2025Generative Active Learning for Long-tail Trajectory Prediction via Controllable Diffusion Model30 Jul 2025
- 2025Semantic-guided Fine-tuning of Foundation Model for Long-tailed Visual Recognition17 Jul 2025
- 2025Transferable Parasitic Estimation via Graph Contrastive Learning and Label Rebalancing in AMS Circuits9 Jul 2025
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- 2025BAPE: Learning an Explicit Bayes Classifier for Long-tailed Visual Recognition29 Jun 2025
- 2025Compositional Attribute Imbalance in Vision Datasets17 Jun 2025
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- 2024DiffuLT: How to Make Diffusion Model Useful for Long-tail Recognition8 Mar 2024
- 2024Training Class-Imbalanced Diffusion Model Via Overlap Optimization16 Feb 2024
- 2023Long-Tailed Visual Recognition via Self-Heterogeneous Integration with Knowledge Excavationcited by 22
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- 2023MoCaE: Mixture of Calibrated Experts Significantly Improves Object Detection26 Sep 2023
- 2023MEDOE: A Multi-Expert Decoder and Output Ensemble Framework for Long-tailed Semantic Segmentation16 Aug 2023
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- 2021Parametric Contrastive Learningcited by 217
- 2021Improving Calibration for Long-Tailed Recognitioncited by 212
- 2021Distribution Alignment: A Unified Framework for Long-tail Visual Recognitioncited by 198
- 2021CReST: A Class-Rebalancing Self-Training Framework for Imbalanced Semi-Supervised Learningcited by 175
- 2022Balanced Contrastive Learning for Long-Tailed Visual Recognitioncited by 144
- 2021Bipartite Graph Network with Adaptive Message Passing for Unbiased Scene Graph Generationcited by 137
- 2021Fine-Grained Image Analysis with Deep Learning: A Surveycited by 135
- 2021Targeted Supervised Contrastive Learning for Long-Tailed Recognitioncited by 132
- 2021Contrastive Learning based Hybrid Networks for Long-Tailed Image Classificationcited by 130
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- 2021The Majority Can Help The Minority: Context-rich Minority Oversampling for Long-tailed Classificationcited by 100
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- 2026OFBD: Object-Focused Background Debiasing for Long-Tailed Learning29 Sep 2026
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- 2026MPT: Missing Prototype Tracking via Barycentric Reconstruction in Vehicular Federated Learning11 Sep 2026
- 2026VICAL: Vicinal Consistency Alignment for Long-Tailed Visual Recognition4 Sep 2026
- 2026Information Density Imbalance in Visual Object Detection2 Sep 2026
- 2026CLEAR: Class-wise Expert Aggregation with Structured Sampling for Long-Tailed Classification11 Aug 2026
- 2026Beyond Static Costs: Learning-Dynamics Aware Loss Functions for Long-Tailed Classification28 Jul 2026
- 2026A Strong Balanced-Softmax Classifier-Retraining Baseline for Long-Tailed Recognition10 Jul 2026
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- 2026Learning to Annotate Delayed and False AEB Events: A Practical System for Extreme Class Imbalance and Asymmetric Label Noise17 Jun 2026
- 2026A Multi-Modal Framework with Cross-Subject Pseudo-Labeling and Semantic Alignment for Micro-Gesture Recognition11 Jun 2026
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