Neural Collapse with Cross-Entropy Loss
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Abstract (arXiv)
We consider the variational problem of cross-entropy loss with n feature vectors on a unit hypersphere in ℝd. We prove that when d ≥ n - 1, the global minimum is given by the simplex equiangular tight frame, which justifies the neural collapse behavior. We also prove that as n rightarrow ∞ with fixed d, the minimizing points will distribute uniformly on the hypersphere and show a connection with the frame potential of Benedetto & Fickus.
Key facts. Cited by 52 papers in the map (data through 7 Oct 2026). First posted on arXiv 15 Dec 2020.
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Citing papers per year: 2021: 5; 2022: 13; 2023: 18; 2024: 11; 2025: 2; 2026: 3.
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- 2021A Geometric Analysis of Neural Collapse with Unconstrained Featurescited by 226
- 2021Exploring Deep Neural Networks via Layer-Peeled Model: Minority Collapse in Imbalanced Trainingcited by 166
- 2021Neural Collapse Under MSE Loss: Proximity to and Dynamics on the Central Pathcited by 156
- 2023Neural Collapse Inspired Feature-Classifier Alignment for Few-Shot Class Incremental Learningcited by 112
- 2022Inducing Neural Collapse in Imbalanced Learning: Do We Really Need a Learnable Classifier at the End of Deep Neural Network?cited by 100
- 2022On the Optimization Landscape of Neural Collapse under MSE Loss: Global Optimality with Unconstrained Featurescited by 97
- 2022Neural Collapse: A Review on Modelling Principles and Generalizationcited by 95
- 2021An Unconstrained Layer-Peeled Perspective on Neural Collapsecited by 87
- 2022Imbalance Trouble: Revisiting Neural-Collapse Geometrycited by 80
- 2022Are All Losses Created Equal: A Neural Collapse Perspectivecited by 78
- 2021Label-Imbalanced and Group-Sensitive Classification under Overparameterizationcited by 74
- 2022Limitations of Neural Collapse for Understanding Generalization in Deep Learningcited by 63
38 more
- 2022Neural Collapse with Normalized Features: A Geometric Analysis over the Riemannian Manifoldcited by 50
- 2023Understanding Imbalanced Semantic Segmentation Through Neural Collapsecited by 46
- 2022Neural Collapse Inspired Attraction-Repulsion-Balanced Loss for Imbalanced Learningcited by 43
- 2022Perfectly Balanced: Improving Transfer and Robustness of Supervised Contrastive Learningcited by 40
- 2023Neural Collapse in Deep Linear Networks: From Balanced to Imbalanced Datacited by 40
- 2023Generalized Neural Collapse for a Large Number of Classescited by 39
- 2024Linguistic Collapse: Neural Collapse in (Large) Language Modelscited by 36
- 2023Learning Efficient Coding of Natural Images with Maximum Manifold Capacity Representationscited by 31
- 2022Linking Neural Collapse and L2 Normalization with Improved Out-of-Distribution Detection in Deep Neural Networkscited by 23
- 2023On the Implicit Geometry of Cross-Entropy Parameterizations for Label-Imbalanced Datacited by 23
- 2022Nearest Class-Center Simplification through Intermediate Layerscited by 20
- 2023Neural Collapse in the Intermediate Hidden Layers of Classification Neural Networkscited by 20
- 2024Neural Collapse for Cross-entropy Class-Imbalanced Learning with Unconstrained ReLU Feature Modelcited by 19
- 2024Learning Equi-angular Representations for Online Continual Learningcited by 15
- 2023Neural Collapse Terminus: A Unified Solution for Class Incremental Learning and Its Variantscited by 14
- 2022On the Implicit Bias Towards Minimal Depth of Deep Neural Networkscited by 12
- 2024Progressive Feedforward Collapse of ResNet Trainingcited by 12
- 2023Are Neurons Actually Collapsed? On the Fine-Grained Structure in Neural Representationscited by 10
- 2023Quantifying the Variability Collapse of Neural Networkscited by 9
- 2023Mini-Batch Optimization of Contrastive Losscited by 8
- 2024Memory-efficient Continual Learning with Neural Collapse Contrastivecited by 8
- 2023Exploring Weight Balancing on Long-Tailed Recognition Problemcited by 7
- 2024Pushing Boundaries: Mixup's Influence on Neural Collapsecited by 7
- 2023Feature Collapsecited by 6
- 2023Symmetric Neural-Collapse Representations with Supervised Contrastive Loss: The Impact of ReLU and Batchingcited by 5
- 2024Low-Rank Learning by Design: the Role of Network Architecture and Activation Linearity in Gradient Rank Collapsecited by 5
- 2024Supervised Contrastive Representation Learning: Landscape Analysis with Unconstrained Featurescited by 5
- 2023Neural Collapse Inspired Federated Learning with Non-iid Datacited by 4
- 2023Exploring Simple, High Quality Out-of-Distribution Detection with L2 Normalizationcited by 3
- 2023DRAUC: An Instance-wise Distributionally Robust AUC Optimization Frameworkcited by 3
- 2024Hyperspherical Classification with Dynamic Label-to-Prototype Assignmentcited by 3
- 2022Memorization-Dilation: Modeling Neural Collapse Under Label Noisecited by 2
- 2023An Investigation of Representation and Allocation Harms in Contrastive Learningcited by 2
- 2024Deep Neural Network Models Trained With A Fixed Random Classifier Transfer Better Across Domainscited by 2
- 2026On the Superlinear Relationship between SGD Noise Covariance and Loss Landscape Curvaturecited by 2
- 2024Multiplicative Logit Adjustment Approximates Neural-Collapse-Aware Decision Boundary Adjustmentcited by 1
- 2025SAMix: Calibrated and Accurate Continual Learning via Sphere-Adaptive Mixup and Neural Collapsecited by 1
- 2026Safety-Efficacy Trade Off: Robustness against Data-Poisoningcited by 1
50 most cited of 52 All 52 (JSON)
- 2026How Label Imbalance Shapes Geometry: A General Spectral Analysis of Multi-Label Neural Collapse3 May 2026
- 2026On the Superlinear Relationship between SGD Noise Covariance and Loss Landscape Curvature5 Feb 2026
- 2026Safety-Efficacy Trade Off: Robustness against Data-Poisoning31 Jan 2026
- 2025SAMix: Calibrated and Accurate Continual Learning via Sphere-Adaptive Mixup and Neural Collapse17 Oct 2025
- 2025Imitate Optimal Policy: Prevail and Induce Action Collapse in Policy Gradient2 Sep 2025
- 2024Memory-efficient Continual Learning with Neural Collapse Contrastive3 Dec 2024
- 2024Multiplicative Logit Adjustment Approximates Neural-Collapse-Aware Decision Boundary Adjustment26 Sep 2024
- 2024Linguistic Collapse: Neural Collapse in (Large) Language Models28 May 2024
- 2024Progressive Feedforward Collapse of ResNet Training2 May 2024
- 2024Learning Equi-angular Representations for Online Continual Learning2 Apr 2024
- 2024Hyperspherical Classification with Dynamic Label-to-Prototype Assignment25 Mar 2024
- 2024Supervised Contrastive Representation Learning: Landscape Analysis with Unconstrained Features29 Feb 2024
38 more
- 2024Deep Neural Network Models Trained With A Fixed Random Classifier Transfer Better Across Domains28 Feb 2024
- 2024Low-Rank Learning by Design: the Role of Network Architecture and Activation Linearity in Gradient Rank Collapse9 Feb 2024
- 2024Pushing Boundaries: Mixup's Influence on Neural Collapse9 Feb 2024
- 2024Neural Collapse for Cross-entropy Class-Imbalanced Learning with Unconstrained ReLU Feature Model4 Jan 2024
- 2023DRAUC: An Instance-wise Distributionally Robust AUC Optimization Framework6 Nov 2023
- 2023Generalized Neural Collapse for a Large Number of Classes9 Oct 2023
- 2023An Investigation of Representation and Allocation Harms in Contrastive Learning2 Oct 2023
- 2023Neural Collapse in the Intermediate Hidden Layers of Classification Neural Networks5 Aug 2023
- 2023Neural Collapse Terminus: A Unified Solution for Class Incremental Learning and Its Variants3 Aug 2023
- 2023Mini-Batch Optimization of Contrastive Loss12 Jul 2023
- 2023Are Neurons Actually Collapsed? On the Fine-Grained Structure in Neural Representations29 Jun 2023
- 2023Symmetric Neural-Collapse Representations with Supervised Contrastive Loss: The Impact of ReLU and Batching13 Jun 2023
- 2023Exploring Simple, High Quality Out-of-Distribution Detection with L2 Normalization7 Jun 2023
- 2023Quantifying the Variability Collapse of Neural Networks6 Jun 2023
- 2023Exploring Weight Balancing on Long-Tailed Recognition Problem26 May 2023
- 2023Feature Collapse25 May 2023
- 2023Neural Collapse Inspired Federated Learning with Non-iid Data27 Mar 2023
- 2023On the Implicit Geometry of Cross-Entropy Parameterizations for Label-Imbalanced Data14 Mar 2023
- 2023Learning Efficient Coding of Natural Images with Maximum Manifold Capacity Representations6 Mar 2023
- 2023Neural Collapse Inspired Feature-Classifier Alignment for Few-Shot Class Incremental Learning6 Feb 2023
- 2023Understanding Imbalanced Semantic Segmentation Through Neural Collapse3 Jan 2023
- 2023Neural Collapse in Deep Linear Networks: From Balanced to Imbalanced Data1 Jan 2023
- 2022Are All Losses Created Equal: A Neural Collapse Perspective4 Oct 2022
- 2022Neural Collapse with Normalized Features: A Geometric Analysis over the Riemannian Manifold19 Sep 2022
- 2022Linking Neural Collapse and L2 Normalization with Improved Out-of-Distribution Detection in Deep Neural Networks17 Sep 2022
- 2022Imbalance Trouble: Revisiting Neural-Collapse Geometry10 Aug 2022
- 2022Memorization-Dilation: Modeling Neural Collapse Under Label Noise11 Jun 2022
- 2022Neural Collapse: A Review on Modelling Principles and Generalization8 Jun 2022
- 2022Neural Collapse Inspired Attraction-Repulsion-Balanced Loss for Imbalanced Learning19 Apr 2022
- 2022Perfectly Balanced: Improving Transfer and Robustness of Supervised Contrastive Learning15 Apr 2022
- 2022Inducing Neural Collapse in Imbalanced Learning: Do We Really Need a Learnable Classifier at the End of Deep Neural Network?17 Mar 2022
- 2022On the Optimization Landscape of Neural Collapse under MSE Loss: Global Optimality with Unconstrained Features2 Mar 2022
- 2022On the Implicit Bias Towards Minimal Depth of Deep Neural Networks18 Feb 2022
- 2022Limitations of Neural Collapse for Understanding Generalization in Deep Learning17 Feb 2022
- 2022Nearest Class-Center Simplification through Intermediate Layers21 Jan 2022
- 2021An Unconstrained Layer-Peeled Perspective on Neural Collapse6 Oct 2021
- 2021Neural Collapse Under MSE Loss: Proximity to and Dynamics on the Central Path3 Jun 2021
- 2021A Geometric Analysis of Neural Collapse with Unconstrained Features6 May 2021
50 newest of 52 All 52 (JSON)
- 2026Safety-Efficacy Trade Off: Robustness against Data-Poisoning31 Jan 2026
- 2021A Geometric Analysis of Neural Collapse with Unconstrained Featurescited by 226
- 2021Exploring Deep Neural Networks via Layer-Peeled Model: Minority Collapse in Imbalanced Trainingcited by 166
- 2021Neural Collapse Under MSE Loss: Proximity to and Dynamics on the Central Pathcited by 156
- 2023Neural Collapse Inspired Feature-Classifier Alignment for Few-Shot Class Incremental Learningcited by 112
- 2022Inducing Neural Collapse in Imbalanced Learning: Do We Really Need a Learnable Classifier at the End of Deep Neural Network?cited by 100
- 2022On the Optimization Landscape of Neural Collapse under MSE Loss: Global Optimality with Unconstrained Featurescited by 97
- 2022Neural Collapse: A Review on Modelling Principles and Generalizationcited by 95
- 2021An Unconstrained Layer-Peeled Perspective on Neural Collapsecited by 87
- 2022Imbalance Trouble: Revisiting Neural-Collapse Geometrycited by 80
- 2022Are All Losses Created Equal: A Neural Collapse Perspectivecited by 78
- 2021Label-Imbalanced and Group-Sensitive Classification under Overparameterizationcited by 74
- 2022Limitations of Neural Collapse for Understanding Generalization in Deep Learningcited by 63
12 most cited of 51 All 51 (JSON)
- 2026How Label Imbalance Shapes Geometry: A General Spectral Analysis of Multi-Label Neural Collapse3 May 2026
- 2026On the Superlinear Relationship between SGD Noise Covariance and Loss Landscape Curvature5 Feb 2026
- 2025SAMix: Calibrated and Accurate Continual Learning via Sphere-Adaptive Mixup and Neural Collapse17 Oct 2025
- 2025Imitate Optimal Policy: Prevail and Induce Action Collapse in Policy Gradient2 Sep 2025
- 2024Memory-efficient Continual Learning with Neural Collapse Contrastive3 Dec 2024
- 2024Multiplicative Logit Adjustment Approximates Neural-Collapse-Aware Decision Boundary Adjustment26 Sep 2024
- 2024Linguistic Collapse: Neural Collapse in (Large) Language Models28 May 2024
- 2024Progressive Feedforward Collapse of ResNet Training2 May 2024
- 2024Learning Equi-angular Representations for Online Continual Learning2 Apr 2024
- 2024Hyperspherical Classification with Dynamic Label-to-Prototype Assignment25 Mar 2024
- 2024Supervised Contrastive Representation Learning: Landscape Analysis with Unconstrained Features29 Feb 2024
- 2024Deep Neural Network Models Trained With A Fixed Random Classifier Transfer Better Across Domains28 Feb 2024
12 newest of 51 All 51 (JSON)