Impact of Data Duplication on Deep Neural Network-Based Image Classifiers: Robust vs. Standard Models

Fuente: arXiv
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Autores principales: Aghabagherloo, Alireza, Abadi, Aydin, Sarkar, Sumanta, Dasu, Vishnu Asutosh, Preneel, Bart
Formato: Preprint
Publicado: 2025
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author Aghabagherloo, Alireza
Abadi, Aydin
Sarkar, Sumanta
Dasu, Vishnu Asutosh
Preneel, Bart
author_facet Aghabagherloo, Alireza
Abadi, Aydin
Sarkar, Sumanta
Dasu, Vishnu Asutosh
Preneel, Bart
contents The accuracy and robustness of machine learning models against adversarial attacks are significantly influenced by factors such as training data quality, model architecture, the training process, and the deployment environment. In recent years, duplicated data in training sets, especially in language models, has attracted considerable attention. It has been shown that deduplication enhances both training performance and model accuracy in language models. While the importance of data quality in training image classifier Deep Neural Networks (DNNs) is widely recognized, the impact of duplicated images in the training set on model generalization and performance has received little attention. In this paper, we address this gap and provide a comprehensive study on the effect of duplicates in image classification. Our analysis indicates that the presence of duplicated images in the training set not only negatively affects the efficiency of model training but also may result in lower accuracy of the image classifier. This negative impact of duplication on accuracy is particularly evident when duplicated data is non-uniform across classes or when duplication, whether uniform or non-uniform, occurs in the training set of an adversarially trained model. Even when duplicated samples are selected in a uniform way, increasing the amount of duplication does not lead to a significant improvement in accuracy.
format Preprint
id arxiv_https___arxiv_org_abs_2504_00638
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Impact of Data Duplication on Deep Neural Network-Based Image Classifiers: Robust vs. Standard Models
Aghabagherloo, Alireza
Abadi, Aydin
Sarkar, Sumanta
Dasu, Vishnu Asutosh
Preneel, Bart
Machine Learning
Artificial Intelligence
Image and Video Processing
The accuracy and robustness of machine learning models against adversarial attacks are significantly influenced by factors such as training data quality, model architecture, the training process, and the deployment environment. In recent years, duplicated data in training sets, especially in language models, has attracted considerable attention. It has been shown that deduplication enhances both training performance and model accuracy in language models. While the importance of data quality in training image classifier Deep Neural Networks (DNNs) is widely recognized, the impact of duplicated images in the training set on model generalization and performance has received little attention. In this paper, we address this gap and provide a comprehensive study on the effect of duplicates in image classification. Our analysis indicates that the presence of duplicated images in the training set not only negatively affects the efficiency of model training but also may result in lower accuracy of the image classifier. This negative impact of duplication on accuracy is particularly evident when duplicated data is non-uniform across classes or when duplication, whether uniform or non-uniform, occurs in the training set of an adversarially trained model. Even when duplicated samples are selected in a uniform way, increasing the amount of duplication does not lead to a significant improvement in accuracy.
title Impact of Data Duplication on Deep Neural Network-Based Image Classifiers: Robust vs. Standard Models
topic Machine Learning
Artificial Intelligence
Image and Video Processing
url https://arxiv.org/abs/2504.00638