Similarity of Neural Network Models: A Survey of Functional and Representational Measures
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Abstract (arXiv)
Measuring similarity of neural networks to understand and improve their behavior has become an issue of great importance and research interest. In this survey, we provide a comprehensive overview of two complementary perspectives of measuring neural network similarity: (i) representational similarity, which considers how activations of intermediate layers differ, and (ii) functional similarity, which considers how models differ in their outputs. In addition to providing detailed descriptions of existing measures, we summarize and discuss results on the properties of and relationships between these measures, and point to open research problems. We hope our work lays a foundation for more systematic research on the properties and applicability of similarity measures for neural network models.
Key facts. Cited by 131 papers in the map (data through 14 Oct 2026). Builds on 128 of its 261 references that are in the map. First posted on arXiv 10 May 2023.
Builds on
128 of 261 references.
References · 128
- 2017Attention Is All You Needcited by 60,361
- 2015Deep Residual Learning for Image Recognitioncited by 52,096
- 2018BERT: Pre-training of Deep Bidirectional Transformers for Language Understandingcited by 40,399
- 2020An Image is Worth 16x16 Words: Transformers for Image Recognition at Scalecited by 30,186
- 2014Very Deep Convolutional Networks for Large-Scale Image Recognitioncited by 15,364
- 2019Sentence-BERT: Sentence Embeddings using Siamese BERT-Networkscited by 9,170
- 2017Graph Attention Networkscited by 8,923
- 2015Batch Normalization: Accelerating Deep Network Training by Reducing Internal Covariate Shiftcited by 7,005
- 2019EfficientNet: Rethinking Model Scaling for Convolutional Neural Networkscited by 6,442
- 2017Towards Deep Learning Models Resistant to Adversarial Attackscited by 6,415
- 2017Inductive Representation Learning on Large Graphscited by 6,320
- 2018GLUE: A Multi-Task Benchmark and Analysis Platform for Natural Language Understandingcited by 4,899
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- 2017A Broad-Coverage Challenge Corpus for Sentence Understanding through Inferencecited by 2,682
- 2013Deep Inside Convolutional Networks: Visualising Image Classification Models and Saliency Mapscited by 2,371
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- 2020Open Graph Benchmark: Datasets for Machine Learning on Graphscited by 2,163
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- 2018MnasNet: Platform-Aware Neural Architecture Search for Mobilecited by 943
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- 2019Right for the Wrong Reasons: Diagnosing Syntactic Heuristics in Natural Language Inferencecited by 876
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- 2017Network Dissection: Quantifying Interpretability of Deep Visual Representationscited by 708
- 2021Do Vision Transformers See Like Convolutional Neural Networks?cited by 675
- 2019GraphSAINT: Graph Sampling Based Inductive Learning Methodcited by 618
- 2020A Survey on Contrastive Self-supervised Learningcited by 554
- 2013Do Deep Nets Really Need to be Deep?cited by 474
- 2019Deep Ensembles: A Loss Landscape Perspectivecited by 443
- 2017Age Progression/Regression by Conditional Adversarial Autoencodercited by 429
- 2014Understanding Deep Image Representations by Inverting Themcited by 403
- 2020Understanding the Behaviour of Contrastive Losscited by 398
- 2018Insights on representational similarity in neural networks with canonical correlationcited by 324
- 2020Do Adversarially Robust ImageNet Models Transfer Better?cited by 316
- 2019Intrinsic dimension of data representations in deep neural networkscited by 282
- 2020Evaluation of Text Generation: A Surveycited by 277
- 2020Do Wide and Deep Networks Learn the Same Things? Uncovering How Neural Network Representations Vary with Width and Depthcited by 245
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