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Test-time adaptation (TTA) is a technique aimed at enhancing the generalization performance of models by leveraging unlabeled samples solely during prediction. Given the need for robustness in neural network systems when faced with…

Machine Learning · Computer Science 2023-07-07 Yongcan Yu , Lijun Sheng , Ran He , Jian Liang

Test-time adaptation (TTA) refers to adapting a classifier for the test data when the probability distribution of the test data slightly differs from that of the training data of the model. To the best of our knowledge, most of the existing…

Machine Learning · Computer Science 2026-01-19 Sravan Danda , Aditya Challa , Shlok Mehendale , Snehanshu Saha

As intensities of MRI volumes are inconsistent across institutes, it is essential to extract universal features of multi-modal MRIs to precisely segment brain tumors. In this concept, we propose a volumetric vision transformer that follows…

Image and Video Processing · Electrical Eng. & Systems 2022-09-19 Himashi Peiris , Munawar Hayat , Zhaolin Chen , Gary Egan , Mehrtash Harandi

In real-world scenarios, tabular data often suffer from distribution shifts that threaten the performance of machine learning models. Despite its prevalence and importance, handling distribution shifts in the tabular domain remains…

Machine Learning · Computer Science 2025-02-13 Changhun Kim , Taewon Kim , Seungyeon Woo , June Yong Yang , Eunho Yang

Given a model trained on source data, Test-Time Adaptation (TTA) enables adaptation and inference in test data streams with domain shifts from the source. Current methods predominantly optimize the model for each incoming test data batch…

Machine Learning · Computer Science 2024-07-18 Ziqiang Wang , Zhixiang Chi , Yanan Wu , Li Gu , Zhi Liu , Konstantinos Plataniotis , Yang Wang

Test-time adaptation (TTA) has emerged as a promising paradigm to handle the domain shifts at test time for medical images from different institutions without using extra training data. However, existing TTA solutions for segmentation tasks…

Computer Vision and Pattern Recognition · Computer Science 2024-10-03 Chuyan Zhang , Hao Zheng , Xin You , Yefeng Zheng , Yun Gu

This work introduces a novel framework for brain tumor segmentation leveraging pre-trained GANs and Unet architectures. By combining a global anomaly detection module with a refined mask generation network, the proposed model accurately…

Image and Video Processing · Electrical Eng. & Systems 2025-06-27 Qifei Cui , Xinyu Lu

Deep topological data analysis (TDA) offers a principled framework for capturing structural invariants such as connectivity and cycles that persist across scales, making it a natural fit for anomaly segmentation (AS). Unlike thresholdbased…

Computer Vision and Pattern Recognition · Computer Science 2026-01-29 Ali Zia , Usman Ali , Umer Ramzan , Abdul Rehman , Abdelwahed Khamis , Wei Xiang

Since distribution shifts are likely to occur during test-time and can drastically decrease the model's performance, online test-time adaptation (TTA) continues to update the model after deployment, leveraging the current test data.…

Computer Vision and Pattern Recognition · Computer Science 2023-10-27 Robert A. Marsden , Mario Döbler , Bin Yang

Accurate segmentation of brain tumors from 3D multimodal MRI is vital for diagnosis and treatment planning across diverse brain tumors. This paper addresses the challenges posed by the BraTS 2023, presenting a unified transfer learning…

Image and Video Processing · Electrical Eng. & Systems 2024-12-12 Ramy A. Zeineldin , Franziska Mathis-Ullrich

The performance of deep learning models depends heavily on test samples at runtime, and shifts from the training data distribution can significantly reduce accuracy. Test-time adaptation (TTA) addresses this by adapting models during…

Machine Learning · Computer Science 2026-02-03 Michal Danilowski , Soumyajit Chatterjee , Abhirup Ghosh

Continual Test-Time Adaptation (CTTA) is an emerging and challenging task where a model trained in a source domain must adapt to continuously changing conditions during testing, without access to the original source data. CTTA is prone to…

Machine Learning · Computer Science 2024-05-29 Ziqi Shi , Fan Lyu , Ye Liu , Fanhua Shang , Fuyuan Hu , Wei Feng , Zhang Zhang , Liang Wang

Test-time adaptation (TTA) has emerged as a promising solution to address performance decay due to unforeseen distribution shifts between training and test data. While recent TTA methods excel in adapting to test data variations, such…

Machine Learning · Computer Science 2024-03-29 Hyejin Park , Jeongyeon Hwang , Sunung Mun , Sangdon Park , Jungseul Ok

A conformal classifier produces a set of predicted classes and provides a probabilistic guarantee that the set includes the true class. Unfortunately, it is often the case that conformal classifiers produce uninformatively large sets. In…

Machine Learning · Computer Science 2025-05-30 Divya Shanmugam , Helen Lu , Swami Sankaranarayanan , John Guttag

While current Vision Transformer (ViT) adapter methods have shown promising accuracy, their inference speed is implicitly hindered by inefficient memory access operations, e.g., standard normalization and frequent reshaping. In this work,…

Computer Vision and Pattern Recognition · Computer Science 2025-02-05 Dong Zhang , Rui Yan , Pingcheng Dong , Kwang-Ting Cheng

Deep neural networks have achieved remarkable success in a variety of computer vision applications. However, there is a problem of degrading accuracy when the data distribution shifts between training and testing. As a solution of this…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Shohei Enomoto , Naoya Hasegawa , Kazuki Adachi , Taku Sasaki , Shin'ya Yamaguchi , Satoshi Suzuki , Takeharu Eda

Test-time augmentation (TTA)--aggregating predictions over multiple augmented copies of a test input--is widely assumed to improve classification accuracy, particularly in medical imaging where it is routinely deployed in production systems…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Daniel Nobrega Medeiros

Test-time adaptation (TTA) methods, which generally rely on the model's predictions (e.g., entropy minimization) to adapt the source pretrained model to the unlabeled target domain, suffer from noisy signals originating from 1) incorrect or…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Jungsoo Lee , Debasmit Das , Jaegul Choo , Sungha Choi

Multi-modal test-time adaptation (TTA) enhances the resilience of benchmark multi-modal models against distribution shifts by leveraging the unlabeled target data during inference. Despite the documented success, the advancement of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Jinglin Xu , Yi Li , Chuxiong Sun , Xiao Xu , Jiangmeng Li , Fanjiang Xu

Existing test-time adaptation (TTA) approaches often adapt models with the unlabeled testing data stream. A recent attempt relaxed the assumption by introducing limited human annotation, referred to as Human-In-the-Loop Test-Time Adaptation…

Computer Vision and Pattern Recognition · Computer Science 2024-12-25 Yushu Li , Yongyi Su , Xulei Yang , Kui Jia , Xun Xu