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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

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

Test-time adaptation (TTA) refers to adjusting the model during the testing phase to cope with changes in sample distribution and enhance the model's adaptability to new environments. In real-world scenarios, models often encounter samples…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Ziqiong Liu , Yushun Tang , Junyang Ji , Zhihai He

Test-Time Adaptation (TTA) enhances model robustness to out-of-distribution (OOD) data by updating the model online during inference, yet existing methods lack theoretical insights into the fundamental causes of performance degradation…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Xiao Chen , Zhongjing Du , Jiazhen Huang , Xu Jiang , Li Lu , Jingyan Jiang , Zhi Wang

Vision-language object detectors (VLODs) such as YOLO-World and Grounding DINO exhibit strong zero-shot generalization, but their performance degrades under distribution shift. Test-time adaptation (TTA) offers a practical way to adapt…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Atif Belal , Heitor R. Medeiros , Marco Pedersoli , Eric Granger

Prior to the deployment of robotic systems, pre-training the deep-recognition models on all potential visual cases is infeasible in practice. Hence, test-time adaptation (TTA) allows the model to adapt itself to novel environments and…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Junha Song , Kwanyong Park , InKyu Shin , Sanghyun Woo , Chaoning Zhang , In So Kweon

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

We consider the problem of improving the human instance segmentation mask quality for a given test image using keypoints estimation. We compare two alternative approaches. The first approach is a test-time adaptation (TTA) method, where we…

Computer Vision and Pattern Recognition · Computer Science 2022-12-14 Kambiz Azarian , Debasmit Das , Hyojin Park , Fatih Porikli

Graph-based learning excels at capturing interaction patterns in diverse domains like recommendation, fraud detection, and particle physics. However, its performance often degrades under distribution shifts, especially those altering…

Machine Learning · Computer Science 2026-05-12 Hans Hao-Hsun Hsu , Shikun Liu , Han Zhao , Pan Li

Despite domain generalization (DG) has significantly addressed the performance degradation of pre-trained models caused by domain shifts, it often falls short in real-world deployment. Test-time adaptation (TTA), which adjusts a learned…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Xingguo Lv , Xingbo Dong , Liwen Wang , Jiewen Yang , Lei Zhao , Bin Pu , Zhe Jin , Xuejun Li

Performance of convolutional neural networks (CNNs) in image analysis tasks is often marred in the presence of acquisition-related distribution shifts between training and test images. Recently, it has been proposed to tackle this problem…

Computer Vision and Pattern Recognition · Computer Science 2022-02-14 Neerav Karani , Georg Brunner , Ertunc Erdil , Simin Fei , Kerem Tezcan , Krishna Chaitanya , Ender Konukoglu

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

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

Test-time adaptation (TTA) of 3D point clouds is crucial for mitigating discrepancies between training and testing samples in real-world scenarios, particularly when handling corrupted point clouds. LiDAR data, for instance, can be affected…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Hamidreza Dastmalchi , Aijun An , Ali Cheraghian , Shafin Rahman , Sameera Ramasinghe

This article presents a comprehensive survey of online test-time adaptation (OTTA), focusing on effectively adapting machine learning models to distributionally different target data upon batch arrival. Despite the recent proliferation of…

Artificial Intelligence · Computer Science 2024-07-19 Zixin Wang , Yadan Luo , Liang Zheng , Zhuoxiao Chen , Sen Wang , Zi Huang

Recent video reasoning models have shown strong results on temporal and multimodal understanding, yet they depend on large-scale supervised data and multi-stage training pipelines, making them costly to train and difficult to adapt to new…

With the rise of Deep Neural Networks, machine learning systems are nowadays ubiquitous in a number of real-world applications, which bears the need for highly reliable models. This requires a thorough look not only at the accuracy of such…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Pedro Conde , Tiago Barros , Rui L. Lopes , Cristiano Premebida , Urbano J. Nunes

Test-Time Adaptation (TTA) addresses distribution shifts during testing by adapting a pretrained model without access to source data. In this work, we propose a novel TTA approach for 3D point cloud classification, combining sampling…

Test-time adaptation (TTA) of Vision-Language Models (VLMs) has emerged as a technique for tackling distribution shifts during the test time. Recent research indicates that the test-time adaptation is intrinsically linked to the model's…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Aodi Li , Liansheng Zhuang , Xiao Long , Houqiang Li , Shafei Wang

Machine learning methods strive to acquire a robust model during the training process that can effectively generalize to test samples, even in the presence of distribution shifts. However, these methods often suffer from performance…

Machine Learning · Computer Science 2024-12-13 Jian Liang , Ran He , Tieniu Tan
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