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Machine learning algorithms have achieved remarkable success across various disciplines, use cases and applications, under the prevailing assumption that training and test samples are drawn from the same distribution. Consequently, these…

机器学习 · 计算机科学 2024-11-07 Zehao Xiao , Cees G. M. Snoek

Despite their recent success, deep neural networks continue to perform poorly when they encounter distribution shifts at test time. Many recently proposed approaches try to counter this by aligning the model to the new distribution prior to…

计算机视觉与模式识别 · 计算机科学 2022-09-26 Samarth Sinha , Peter Gehler , Francesco Locatello , Bernt Schiele

A fundamental assumption of most machine learning algorithms is that the training and test data are drawn from the same underlying distribution. However, this assumption is violated in almost all practical applications: machine learning…

机器学习 · 计算机科学 2021-12-02 Marvin Zhang , Henrik Marklund , Nikita Dhawan , Abhishek Gupta , Sergey Levine , Chelsea Finn

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…

机器学习 · 计算机科学 2024-12-13 Jian Liang , Ran He , Tieniu Tan

We propose a test-time adaptation method for cross-domain image segmentation. Our method is simple: Given a new unseen instance at test time, we adapt a pre-trained model by conducting instance-specific BatchNorm (statistics) calibration.…

计算机视觉与模式识别 · 计算机科学 2022-03-31 Yuliang Zou , Zizhao Zhang , Chun-Liang Li , Han Zhang , Tomas Pfister , Jia-Bin Huang

We study the problem of continual test-time adaption where the goal is to adapt a source pre-trained model to a sequence of unlabelled target domains at test time. Existing methods on test-time training suffer from several limitations: (1)…

机器学习 · 计算机科学 2024-10-03 Kien X. Nguyen , Fengchun Qiao , Xi Peng

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…

机器学习 · 计算机科学 2024-05-29 Ziqi Shi , Fan Lyu , Ye Liu , Fanhua Shang , Fuyuan Hu , Wei Feng , Zhang Zhang , Liang Wang

Test-time adaptation harnesses test inputs to improve the accuracy of a model trained on source data when tested on shifted target data. Existing methods update the source model by (re-)training on each target domain. While effective,…

机器学习 · 计算机科学 2023-06-22 Jin Gao , Jialing Zhang , Xihui Liu , Trevor Darrell , Evan Shelhamer , Dequan Wang

In this paper, we propose Test-Time Training, a general approach for improving the performance of predictive models when training and test data come from different distributions. We turn a single unlabeled test sample into a self-supervised…

机器学习 · 计算机科学 2020-07-03 Yu Sun , Xiaolong Wang , Zhuang Liu , John Miller , Alexei A. Efros , Moritz Hardt

Continual Test-Time Adaptation (CTTA) enables pre-trained models to adapt to continuously evolving domains. Existing methods have improved robustness but typically rely on fixed or batch-level thresholds, which cannot account for varying…

计算机视觉与模式识别 · 计算机科学 2025-12-10 Seunghwan Lee , Inyoung Jung , Hojoon Lee , Eunil Park , Sungeun Hong

Learning guarantees often rely on assumptions of i.i.d. data, which will likely be violated in practice once predictors are deployed to perform real-world tasks. Domain adaptation approaches thus appeared as a useful framework yielding…

机器学习 · 计算机科学 2021-06-29 Joao Monteiro , Xavier Gibert , Jianqiao Feng , Vincent Dumoulin , Dar-Shyang Lee

Addressing shifts in data distributions is an important prerequisite for the deployment of deep learning models to real-world settings. A general approach to this problem involves the adjustment of models to a new domain through transfer…

机器学习 · 计算机科学 2021-04-09 Kurt Willis , Luis Oala

Test-time adaptation (TTA) intends to adapt the pretrained model to test distributions with only unlabeled test data streams. Most of the previous TTA methods have achieved great success on simple test data streams such as independently…

计算机视觉与模式识别 · 计算机科学 2023-03-27 Longhui Yuan , Binhui Xie , Shuang Li

Test-time domain adaptation aims to adapt a source pre-trained model to a target domain without using any source data. Existing works mainly consider the case where the target domain is static. However, real-world machine perception systems…

计算机视觉与模式识别 · 计算机科学 2022-03-28 Qin Wang , Olga Fink , Luc Van Gool , Dengxin Dai

Test-time adaptation (TTA) is a technique used to reduce distribution gaps between the training and testing sets by leveraging unlabeled test data during inference. In this work, we expand TTA to a more practical scenario, where the test…

机器学习 · 计算机科学 2023-03-06 Chenyan Wu , Yimu Pan , Yandong Li , James Z. Wang

Methods of transfer learning try to combine knowledge from several related tasks (or domains) to improve performance on a test task. Inspired by causal methodology, we relax the usual covariate shift assumption and assume that it holds true…

机器学习 · 统计学 2018-09-25 Mateo Rojas-Carulla , Bernhard Schölkopf , Richard Turner , Jonas Peters

The goal of test-time adaptation is to adapt a source-pretrained model to a continuously changing target domain without relying on any source data. Typically, this is either done by updating the parameters of the model (model adaptation)…

计算机视觉与模式识别 · 计算机科学 2023-12-01 Mrigank Raman , Rohan Shah , Akash Kannan , Pranit Chawla

In domain generalization (DG), the target domain is unknown when the model is being trained, and the trained model should successfully work on an arbitrary (and possibly unseen) target domain during inference. This is a difficult problem,…

计算机视觉与模式识别 · 计算机科学 2023-06-14 Jungwuk Park , Dong-Jun Han , Soyeong Kim , Jaekyun Moon

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

计算机视觉与模式识别 · 计算机科学 2024-01-03 Mario Döbler , Florian Marencke , Robert A. Marsden , Bin Yang

Standard supervised machine learning assumes that the distribution of the source samples used to train an algorithm is the same as the one of the target samples on which it is supposed to make predictions. However, as any data scientist…

机器学习 · 计算机科学 2020-02-12 Pirmin Lemberger , Ivan Panico
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