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Aims. We present the application of a fully connected neural network (NN) for galaxy merger identification using exclusively photometric information. Our purpose is not only to test the method's efficiency, but also to understand what…

Astrophysics of Galaxies · Physics 2023-01-25 L. E. Suelves , W. J. Pearson , A. Pollo

Domain randomization through synthesis is a powerful strategy to train networks that are unbiased with respect to the domain of the input images. Randomization allows networks to see a virtually infinite range of intensities and artifacts…

Computer Vision and Pattern Recognition · Computer Science 2026-04-23 Xiaoling Hu , Xiangrui Zeng , Oula Puonti , Juan Eugenio Iglesias , Bruce Fischl , Yael Balbastre

Computer-aided detection systems based on deep learning have shown great potential in breast cancer detection. However, the lack of domain generalization of artificial neural networks is an important obstacle to their deployment in changing…

Image and Video Processing · Electrical Eng. & Systems 2023-01-25 Lidia Garrucho , Kaisar Kushibar , Socayna Jouide , Oliver Diaz , Laura Igual , Karim Lekadir

Segmentation is a crucial analysis task in biomedical imaging. Given the diverse experimental settings in this field, the lack of generalization limits the use of deep learning in practice. Domain adaptation is a promising remedy: it…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Anwai Archit , Constantin Pape

Deep neural networks (DNNs) have revolutionized artificial intelligence but often lack performance when faced with out-of-distribution (OOD) data, a common scenario due to the inevitable domain shifts in real-world applications. This…

Machine Learning · Computer Science 2024-08-23 Arsham Gholamzadeh Khoee , Yinan Yu , Robert Feldt

Deep domain adaptation methods can reduce the distribution discrepancy by learning domain-invariant embedddings. However, these methods only focus on aligning the whole data distributions, without considering the class-level relations among…

Computer Vision and Pattern Recognition · Computer Science 2019-01-23 Weijian Deng , Liang Zheng , Jianbin Jiao

The cost of large scale data collection and annotation often makes the application of machine learning algorithms to new tasks or datasets prohibitively expensive. One approach circumventing this cost is training models on synthetic data…

Computer Vision and Pattern Recognition · Computer Science 2016-08-23 Konstantinos Bousmalis , George Trigeorgis , Nathan Silberman , Dilip Krishnan , Dumitru Erhan

Semantic segmentation models only perform well on the domain they are trained on and datasets for training are scarce and often have a small label-spaces, because the pixel level annotations required are expensive to make. Thus training…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Floris Naber

We measure the influence of image augmentations and training dataset size when training a deep neural network to classify galaxy morphology. Data augmentation is an integral step when training machine learning models and often astronomers…

Instrumentation and Methods for Astrophysics · Physics 2026-04-29 Leon H. Butterworth , Ashley Spindler

Machine learning models often struggle to generalize across domains with varying data distributions, such as differing noise levels, leading to degraded performance. Traditional strategies like personalized training, which trains separate…

Machine Learning · Computer Science 2026-04-07 Snehaa Reddy , Jayaprakash Katual , Satish Mulleti

Applying an object detector, which is neither trained nor fine-tuned on data close to the final application, often leads to a substantial performance drop. In order to overcome this problem, it is necessary to consider a shift between…

Computer Vision and Pattern Recognition · Computer Science 2020-05-27 Alexey Abramov , Christopher Bayer , Claudio Heller

During the past decade, deep neural networks have led to fast-paced progress and significant achievements in computer vision problems, for both academia and industry. Yet despite their success, state-of-the-art image classification…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Aristotelis Ballas , Christos Diou

Increasing the volume of training data can enable the auxiliary diagnostic algorithms for Autism Spectrum Disorder (ASD) to learn more accurate and stable models. However, due to the significant heterogeneity and domain shift in rs-fMRI…

Neurons and Cognition · Quantitative Biology 2025-07-11 Yiqian Luo , Qiurong Chen , Fali Li , Peng Xu , Yangsong Zhang

Appropriately evaluating the discrepancy between domains is essential for the success of unsupervised domain adaptation. In this paper, we first point out that existing discrepancy measures are less informative when complex models such as…

Machine Learning · Statistics 2019-10-23 Jongyeong Lee , Nontawat Charoenphakdee , Seiichi Kuroki , Masashi Sugiyama

Current state-of-the-art self-supervised approaches, are effective when trained on individual domains but show limited generalization on unseen domains. We observe that these models poorly generalize even when trained on a mixture of…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Neha Kalibhat , Sam Sharpe , Jeremy Goodsitt , Bayan Bruss , Soheil Feizi

In a longitudinal clinical registry, different measurement instruments might have been used for assessing individuals at different time points. To combine them, we investigate deep learning techniques for obtaining a joint latent…

Machine Learning · Computer Science 2023-12-04 Maren Hackenberg , Michelle Pfaffenlehner , Max Behrens , Astrid Pechmann , Janbernd Kirschner , Harald Binder

Domain Adaptation is an actively researched problem in Computer Vision. In this work, we propose an approach that leverages unsupervised data to bring the source and target distributions closer in a learned joint feature space. We…

Computer Vision and Pattern Recognition · Computer Science 2018-04-16 Swami Sankaranarayanan , Yogesh Balaji , Carlos D. Castillo , Rama Chellappa

Techniques to learn hash codes which can store and retrieve large dimensional multimedia data efficiently have attracted broad research interests in the recent years. With rapid explosion of newly emerged concepts and online data, existing…

Computer Vision and Pattern Recognition · Computer Science 2017-03-02 Shubham Pachori , Ameya Deshpande , Shanmuganathan Raman

Domain shift refers to the well known problem that a model trained in one source domain performs poorly when applied to a target domain with different statistics. {Domain Generalization} (DG) techniques attempt to alleviate this issue by…

Machine Learning · Computer Science 2017-10-11 Da Li , Yongxin Yang , Yi-Zhe Song , Timothy M. Hospedales

Domain shift remains a key challenge in deploying machine learning models to the real world. Unsupervised domain adaptation (UDA) aims to address this by minimising domain discrepancy during training, but the discrepancy estimates suffer…

Machine Learning · Computer Science 2026-05-07 Andrea Napoli , Paul White