EchoAlign: Bridging Generative and Discriminative Learning under Noisy Labels
Pith reviewed 2026-05-24 01:13 UTC · model grok-4.3
The pith
EchoAlign modifies instance features with generative models to align them to noisy labels and selects reliable originals by similarity.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
EchoAlign bridges generative and discriminative learning under noisy labels by treating noisy labels as supervision targets and modifying the corresponding instances to align with them. EchoMod uses controllable generative models to adjust instance features while preserving key instance-level structural cues such as shape and edges and avoiding excessive distortion. EchoSelect mitigates distribution shifts by retaining a reliable subset of original instances guided by feature similarity between original and modified samples.
What carries the argument
EchoAlign framework with EchoMod component for generative feature adjustment to noisy labels and EchoSelect component for similarity-based retention of reliable instances.
If this is right
- Outperforms state-of-the-art methods in most evaluated settings on three benchmark datasets.
- Under 30 percent instance-dependent noise, retains nearly twice as many correctly labeled samples as competing approaches.
- Maintains 99 percent selection accuracy under 30 percent instance-dependent noise.
- Enables robust learning in highly noisy settings without relying on label correction.
Where Pith is reading between the lines
- The same modification-plus-similarity pattern might apply directly to other modalities such as text or audio where controllable generators exist.
- Avoiding explicit label correction could retain partial signal from noisy labels that are only locally incorrect.
- Similarity-based selection could be combined with existing confidence or consistency filters to further improve retention rates.
Load-bearing premise
Controllable generative models can reliably adjust instance features to align with noisy labels while preserving key structural cues without excessive distortion, and feature similarity between original and modified samples can accurately identify reliable instances without introducing new biases.
What would settle it
A replication on the same three benchmarks under 30 percent instance-dependent noise in which EchoSelect fails to retain nearly twice as many correct samples as competitors or drops below 99 percent selection accuracy would falsify the performance claims.
Figures
read the original abstract
Noisy labels severely hinder the accuracy and generalization of machine learning models, especially when ambiguous instance features make reliable annotation difficult. Existing approaches, including transition-matrix-based label correction, struggle to capture complex relationships between instances and noisy labels, limiting their effectiveness in such settings. We present EchoAlign, a framework that bridges generative and discriminative learning under noisy labels. Instead of correcting labels, EchoAlign treats noisy labels as supervision targets and modifies the corresponding instances to align with them. The framework has two components: EchoMod uses controllable generative models to adjust instance features while preserving key instance-level structural cues, such as shape and edges, and avoiding excessive distortion; EchoSelect mitigates distribution shifts by retaining a reliable subset of original instances, guided by feature similarity between original and modified samples. This generative-discriminative interplay enables robust learning in highly noisy settings. Experiments on three benchmark datasets show that EchoAlign outperforms state-of-the-art methods in most evaluated settings. Under 30% instance-dependent noise, EchoSelect retains nearly twice as many correctly labeled samples as competing approaches while maintaining 99% selection accuracy, demonstrating the robustness and effectiveness of EchoAlign.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper proposes EchoAlign, a framework that bridges generative and discriminative learning for noisy label problems. Rather than correcting labels, EchoMod uses controllable generative models to modify instance features to align with noisy labels while preserving structural cues like shape and edges. EchoSelect then retains a reliable subset of original instances based on feature similarity between original and modified samples to mitigate distribution shift. Experiments on three benchmark datasets show outperformance over state-of-the-art methods in most settings; under 30% instance-dependent noise, EchoSelect retains nearly twice as many correctly labeled samples as competitors while achieving 99% selection accuracy.
Significance. If the empirical results hold, the work offers a novel alternative to transition-matrix and label-correction approaches by aligning instances to noisy labels instead. The concrete metrics on sample retention and selection accuracy under instance-dependent noise provide evidence of robustness in challenging regimes. The manuscript is credited for presenting a fully empirical framework with standard benchmark comparisons rather than relying on untestable theoretical reductions.
major comments (2)
- [§5] §5 (experimental results): the reported 99% selection accuracy and 2× retention under 30% instance-dependent noise are load-bearing for the central claim, yet the manuscript provides no ablation on the similarity threshold or generative-model hyperparameters used to generate the modified samples; without these controls it is unclear whether the gains are robust to implementation choices.
- [method section] EchoMod description (method section): the claim that controllable generative models adjust features 'while preserving key instance-level structural cues and avoiding excessive distortion' is central to the framework, but no quantitative distortion metric or preservation guarantee is stated or measured; this leaves the weakest assumption untested in the reported experiments.
minor comments (2)
- [abstract and §5] The abstract and experimental tables should include error bars or standard deviations across runs to support the outperformance statements.
- [EchoSelect description] Notation for the similarity function in EchoSelect is introduced without an explicit equation; adding one would improve clarity.
Simulated Author's Rebuttal
We thank the referee for the positive recommendation of minor revision and the detailed comments. We address each major comment below and will revise the manuscript accordingly.
read point-by-point responses
-
Referee: [§5] §5 (experimental results): the reported 99% selection accuracy and 2× retention under 30% instance-dependent noise are load-bearing for the central claim, yet the manuscript provides no ablation on the similarity threshold or generative-model hyperparameters used to generate the modified samples; without these controls it is unclear whether the gains are robust to implementation choices.
Authors: We agree that the reported metrics would be strengthened by explicit ablations. In the revised manuscript we will add results varying the similarity threshold over a range of values and testing multiple generative-model hyperparameter settings, confirming that the 99% selection accuracy and retention gains remain stable. revision: yes
-
Referee: [method section] EchoMod description (method section): the claim that controllable generative models adjust features 'while preserving key instance-level structural cues and avoiding excessive distortion' is central to the framework, but no quantitative distortion metric or preservation guarantee is stated or measured; this leaves the weakest assumption untested in the reported experiments.
Authors: The manuscript currently supports the preservation claim via qualitative examples and downstream task performance. We acknowledge that a quantitative metric would provide stronger validation. We will add a quantitative distortion measure (e.g., LPIPS between original and modified instances) in the revised experiments section. revision: yes
Circularity Check
No significant circularity
full rationale
The paper presents an empirical ML framework (EchoMod + EchoSelect) for noisy-label learning. No derivation chain, equations, or first-principles claims appear in the abstract or described sections. Performance claims rest on benchmark experiments rather than any reduction of outputs to fitted inputs or self-citations. The method is self-contained as a practical pipeline whose validity is tested externally via standard datasets and metrics; no load-bearing step reduces by construction to its own inputs.
Axiom & Free-Parameter Ledger
Forward citations
Cited by 3 Pith papers
-
Negative Ontology of True Target for Machine Learning: Towards Evaluation and Learning under Democratic Supervision
By adopting a negative ontology where the true target does not objectively exist, the paper defines Democratic Supervision and derives the EL-MIATTs framework for ML evaluation and learning with Multiple Inaccurate Tr...
-
Negative Ontology of True Target for Machine Learning: Towards Evaluation and Learning under Democratic Supervision
The paper posits that the true target does not exist and introduces the EL-MIATTs framework for evaluation and learning under Democratic Supervision in machine learning.
-
Negative Ontology of True Target for Machine Learning: Towards Evaluation and Learning under Democratic Supervision
The true target does not objectively exist in ML, so models should use multiple inaccurate true targets under democratic supervision via the EL-MIATTs framework for evaluation and learning.
Reference graph
Works this paper leans on
-
[1]
J. Achiam, S. Adler, S. Agarwal, L. Ahmad, I. Akkaya, F. L. Aleman, D. Almeida, J. Altenschmidt, S. Altman, S. Anadkat, et al. Gpt-4 technical report. arXiv preprint arXiv:2303.08774, 2023
work page internal anchor Pith review Pith/arXiv arXiv 2023
- [2]
- [3]
-
[4]
Y. Bai, E. Yang, B. Han, Y. Yang, J. Li, Y. Mao, G. Niu, and T. Liu. Understanding and improving early stopping for learning with noisy labels. In NeurIPS, pages 24392--24403, 2021
work page 2021
-
[5]
Y. Bai, Z. Han, E. Yang, J. Yu, B. Han, D. Wang, and T. Liu. Subclass-dominant label noise: A counterexample for the success of early stopping. In Thirty-seventh Conference on Neural Information Processing Systems, 2023
work page 2023
-
[6]
A. Berthon, B. Han, G. Niu, T. Liu, and M. Sugiyama. Confidence scores make instance-dependent label-noise learning possible. In ICML, Proceedings of Machine Learning Research, pages 825--836, 2021
work page 2021
-
[7]
J. Bose, R. P. Monti, and A. Grover. Controllable generative modeling via causal reasoning. Transactions on Machine Learning Research, 2022
work page 2022
- [8]
- [9]
-
[10]
J. Chen, R. Zhang, T. Yu, R. Sharma, Z. Xu, T. Sun, and C. Chen. Label-retrieval-augmented diffusion models for learning from noisy labels. ArXiv, abs/2305.19518, 2023 b . doi:10.48550/arXiv.2305.19518
- [11]
- [12]
-
[13]
A. Dosovitskiy, L. Beyer, A. Kolesnikov, D. Weissenborn, X. Zhai, T. Unterthiner, M. Dehghani, M. Minderer, G. Heigold, S. Gelly, J. Uszkoreit, and N. Houlsby. An image is worth 16x16 words: Transformers for image recognition at scale. In ICLR, 2021
work page 2021
-
[14]
H. Du, H. Yuan, Z. Huang, P. Zhao, and X. Zhou. Sequential recommendation with diffusion models. ArXiv, abs/2304.04541, 2023. doi:10.48550/arXiv.2304.04541
-
[15]
J.-Y. Franceschi, M. Gartrell, L. D. Santos, T. Issenhuth, E. de B'ezenac, M. Chen, and A. Rakotomamonjy. Unifying gans and score-based diffusion as generative particle models. ArXiv, abs/2305.16150, 2023. doi:10.48550/arXiv.2305.16150
-
[16]
J. Goldberger and E. Ben-Reuven. Training deep neural-networks using a noise adaptation layer. In International conference on learning representations, 2016
work page 2016
-
[17]
K. Gu, X. Masotto, V. Bachani, B. Lakshminarayanan, J. Nikodem, and D. Yin. An instance-dependent simulation framework for learning with label noise. Machine Learning, 112 0 (6): 0 1871--1896, 2023
work page 2023
-
[18]
B. Han, Q. Yao, X. Yu, G. Niu, M. Xu, W. Hu, I. Tsang, and M. Sugiyama. Co-teaching: Robust training of deep neural networks with extremely noisy labels. In NeurIPS, pages 8527--8537, 2018
work page 2018
-
[19]
B. Han, G. Niu, X. Yu, Q. Yao, M. Xu, I. Tsang, and M. Sugiyama. SIGUA : Forgetting may make learning with noisy labels more robust. In International Conference on Machine Learning, pages 4006--4016, 2020
work page 2020
- [20]
-
[21]
Z. Han, H. Sun, and Y. Yin. Learning transferable parameters for unsupervised domain adaptation. IEEE Transactions on Image Processing, 31: 0 6424--6439, 2022 b
work page 2022
-
[22]
K. He, X. Zhang, S. Ren, and J. Sun. Deep residual learning for image recognition. In CVPR, pages 770--778, 2016
work page 2016
-
[23]
T. Kim, J. Ko, S. Cho, J. Choi, and S. Yun. FINE samples for learning with noisy labels. In NeurIPS, pages 24137--24149, 2021
work page 2021
- [24]
-
[25]
A. Krizhevsky, G. Hinton, et al. Learning multiple layers of features from tiny images. Technical report, 2009
work page 2009
-
[26]
J. Li, R. Socher, and S. C. H. Hoi. Dividemix: Learning with noisy labels as semi-supervised learning. In ICLR, 2020
work page 2020
-
[27]
W. Li, L. Wang, W. Li, E. Agustsson, and L. Van Gool. Webvision database: Visual learning and understanding from web data. arXiv preprint arXiv:1708.02862, 2017
work page internal anchor Pith review Pith/arXiv arXiv 2017
-
[28]
S. Liu, J. Niles - Weed, N. Razavian, and C. Fernandez - Granda. Early-learning regularization prevents memorization of noisy labels. In NeurIPS, pages 20331--20342, 2020
work page 2020
- [29]
-
[30]
Y. Liu, H. Cheng, and K. Zhang. Identifiability of label noise transition matrix. In International Conference on Machine Learning, pages 21475--21496. PMLR, 2023
work page 2023
-
[31]
Y. Lu, Y. Bo, and W. He. Noise attention learning: Enhancing noise robustness by gradient scaling. In NeurIPS, 2022
work page 2022
-
[32]
X. Ma, H. Huang, Y. Wang, S. Romano, S. Erfani, and J. Bailey. Normalized loss functions for deep learning with noisy labels. In ICML, 2020
work page 2020
-
[33]
A. K. Menon, B. Van Rooyen, and N. Natarajan. Learning from binary labels with instance-dependent noise. Machine Learning, 107: 0 1561--1595, 2018
work page 2018
-
[34]
A. K. Menon, A. S. Rawat, S. J. Reddi, and S. Kumar. Can gradient clipping mitigate label noise? In International Conference on Learning Representations, 2019
work page 2019
-
[35]
N. Natarajan, I. S. Dhillon, P. K. Ravikumar, and A. Tewari. Learning with noisy labels. Advances in neural information processing systems, 26, 2013
work page 2013
-
[36]
L. G. Neuberg. Causality: models, reasoning, and inference, by judea pearl, cambridge university press, 2000. Econometric Theory, 19 0 (4): 0 675--685, 2003
work page 2000
-
[37]
D. T. Nguyen, C. K. Mummadi, T. Ngo, T. H. P. Nguyen, L. Beggel, and T. Brox. SELF: learning to filter noisy labels with self-ensembling. In ICLR, 2020
work page 2020
- [38]
-
[39]
A. Radford, J. W. Kim, C. Hallacy, A. Ramesh, G. Goh, S. Agarwal, G. Sastry, A. Askell, P. Mishkin, J. Clark, et al. Learning transferable visual models from natural language supervision. In International conference on machine learning, pages 8748--8763. PMLR, 2021
work page 2021
-
[40]
S. Reed, H. Lee, D. Anguelov, C. Szegedy, D. Erhan, and A. Rabinovich. Training deep neural networks on noisy labels with bootstrapping. arXiv preprint arXiv:1412.6596, 2014
work page internal anchor Pith review Pith/arXiv arXiv 2014
-
[41]
C. Scott. A rate of convergence for mixture proportion estimation, with application to learning from noisy labels. In Artificial Intelligence and Statistics, pages 838--846. PMLR, 2015
work page 2015
- [42]
-
[43]
N. Stiennon, L. Ouyang, J. Wu, D. Ziegler, R. Lowe, C. Voss, A. Radford, D. Amodei, and P. F. Christiano. Learning to summarize with human feedback. In NeurIPS, pages 3008--3021, 2020
work page 2020
- [44]
- [45]
-
[46]
G. Team, R. Anil, S. Borgeaud, Y. Wu, J.-B. Alayrac, J. Yu, R. Soricut, J. Schalkwyk, A. M. Dai, A. Hauth, et al. Gemini: a family of highly capable multimodal models. arXiv preprint arXiv:2312.11805, 2023
work page internal anchor Pith review Pith/arXiv arXiv 2023
-
[47]
X. Wang, S. Wang, J. Wang, H. Shi, and T. Mei. Co-mining: Deep face recognition with noisy labels. In Proceedings of the IEEE/CVF international conference on computer vision, pages 9358--9367, 2019
work page 2019
-
[48]
Y. Wang, Z. Liu, L. Yang, and P. S. Yu. Conditional denoising diffusion for sequential recommendation. ArXiv, abs/2304.11433, 2023. doi:10.48550/arXiv.2304.11433
-
[49]
H. Wei, H. Zhuang, R. Xie, L. Feng, G. Niu, B. An, and Y. Li. Mitigating memorization of noisy labels by clipping the model prediction. In International Conference on Machine Learning. PMLR, 2023
work page 2023
-
[50]
J. Wei, Z. Zhu, H. Cheng, T. Liu, G. Niu, and Y. Liu. Learning with noisy labels revisited: A study using real-world human annotations. In International Conference on Learning Representations, 2022
work page 2022
-
[51]
P. Welinder, S. Branson, S. J. Belongie, and P. Perona. The multidimensional wisdom of crowds. In NeurIPS, pages 2424--2432, 2010
work page 2010
-
[52]
P. Wu, S. Zheng, M. Goswami, D. N. Metaxas, and C. Chen. A topological filter for learning with label noise. In NeurIPS, pages 21382--21393, 2020
work page 2020
-
[53]
X. Xia, T. Liu, N. Wang, B. Han, C. Gong, G. Niu, and M. Sugiyama. Are anchor points really indispensable in label-noise learning? In NeurIPS, pages 6835--6846, 2019
work page 2019
-
[54]
X. Xia, T. Liu, B. Han, N. Wang, M. Gong, H. Liu, G. Niu, D. Tao, and M. Sugiyama. Part-dependent label noise: Towards instance-dependent label noise. Advances in Neural Information Processing Systems, 33: 0 7597--7610, 2020
work page 2020
-
[55]
X. Xia, T. Liu, B. Han, C. Gong, N. Wang, Z. Ge, and Y. Chang. Robust early-learning: Hindering the memorization of noisy labels. In ICLR, 2021
work page 2021
-
[56]
X. Xia, B. Han, Y. Zhan, J. Yu, M. Gong, C. Gong, and T. Liu. Combating noisy labels with sample selection by mining high-discrepancy examples. In Proceedings of the IEEE/CVF International Conference on Computer Vision, pages 1833--1843, 2023 a
work page 2023
-
[57]
X. Xia, P. Lu, C. Gong, B. Han, J. Yu, and T. Liu. Regularly truncated m-estimators for learning with noisy labels. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2023 b
work page 2023
-
[58]
T. Xiao, T. Xia, Y. Yang, C. Huang, and X. Wang. Learning from massive noisy labeled data for image classification. In CVPR, pages 2691--2699, 2015
work page 2015
-
[59]
S. Yang, E. Yang, B. Han, Y. Liu, M. Xu, G. Niu, and T. Liu. Estimating instance-dependent bayes-label transition matrix using a deep neural network. In ICML, pages 25302--25312, 2022
work page 2022
-
[60]
Y. Yao, T. Liu, M. Gong, B. Han, G. Niu, and K. Zhang. Instance-dependent label-noise learning under a structural causal model. Advances in Neural Information Processing Systems, 34: 0 4409--4420, 2021
work page 2021
-
[61]
Y. Yao, M. Gong, Y. Du, J. Yu, B. Han, K. Zhang, and T. Liu. Which is better for learning with noisy labels: the semi-supervised method or modeling label noise? In International Conference on Machine Learning, pages 39660--39673. PMLR, 2023 a
work page 2023
-
[62]
Y. Yao, T. Liu, M. Gong, B. Han, G. Niu, and K. Zhang. Causality encourages the identifiability of instance-dependent label noise. In Machine Learning for Causal Inference, pages 247--264. Springer, 2023 b
work page 2023
-
[63]
X. Yu, T. Liu, M. Gong, and D. Tao. Learning with biased complementary labels. In ECCV, pages 69--85, 2018
work page 2018
-
[64]
X. Yu, B. Han, J. Yao, G. Niu, I. Tsang, and M. Sugiyama. How does disagreement help generalization against label corruption? In International Conference on Machine Learning, pages 7164--7173. PMLR, 2019
work page 2019
- [65]
- [66]
- [67]
-
[68]
S. Zhao, D. Chen, Y.-C. Chen, J. Bao, S. Hao, L. Yuan, and K.-Y. K. Wong. Uni-controlnet: All-in-one control to text-to-image diffusion models. Advances in Neural Information Processing Systems, 2023
work page 2023
-
[69]
X. Zhou, X. Liu, D. Zhai, J. Jiang, and X. Ji. Asymmetric loss functions for noise-tolerant learning: Theory and applications. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2023
work page 2023
-
[70]
Y. Zhuang, Y. Yu, L. Kong, X. Chen, and C. Zhang. Dygen: Learning from noisy labels via dynamics-enhanced generative modeling. In Proceedings of the 29th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, 2023. doi:10.1145/3580305.3599318
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.