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Test-time adaptation (TTA) adapts pre-trained models to distribution shifts at inference using only unlabeled test data. Under the Practical TTA (PTTA) setting, where test streams are temporally correlated and non-i.i.d., memory has become…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Yu-Wen Tseng , Xingyi Zheng , Ya-Chen Wu , I-Bin Liao , Yung-Hui Li , Hong-Han Shuai , Wen-Huang Cheng

Real-world vision models in dynamic environments face rapid shifts in domain distributions, leading to decreased recognition performance. Using unlabeled test data, continuous test-time adaptation (CTTA) directly adjusts a pre-trained…

计算机视觉与模式识别 · 计算机科学 2025-01-28 Sarthak Kumar Maharana , Baoming Zhang , Yunhui Guo

Adaptation of pretrained vision-language models such as CLIP to various downstream tasks have raised great interest in recent researches. Previous works have proposed a variety of test-time adaptation (TTA) methods to achieve strong…

计算机视觉与模式识别 · 计算机科学 2024-10-25 Taolin Zhang , Jinpeng Wang , Hang Guo , Tao Dai , Bin Chen , Shu-Tao Xia

Time series classification (TSC) is an important task in time series analysis. Existing TSC methods mainly train on each single domain separately, suffering from a degradation in accuracy when the samples for training are insufficient in…

机器学习 · 计算机科学 2025-04-15 Yuxuan Chen , Shanshan Huang , Yunyao Cheng , Peng Chen , Zhongwen Rao , Yang Shu , Bin Yang , Lujia Pan , Chenjuan Guo

Recent contrastive methods show significant improvement in self-supervised learning in several domains. In particular, contrastive methods are most effective where data augmentation can be easily constructed e.g. in computer vision.…

机器学习 · 计算机科学 2021-12-09 Konstantinos Kallidromitis , Denis Gudovskiy , Kazuki Kozuka , Iku Ohama , Luca Rigazio

Convolutional Neural Networks (ConvNets) are trained offline using the few available data and may therefore suffer from substantial accuracy loss when ported on the field, where unseen input patterns received under unpredictable external…

计算机视觉与模式识别 · 计算机科学 2021-05-14 Luca Mocerino , Roberto G. Rizzo , Valentino Peluso , Andrea Calimera , Enrico Macii

The lack of labeled data is a key challenge for learning useful representation from time series data. However, an unsupervised representation framework that is capable of producing high quality representations could be of great value. It is…

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

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…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Junha Song , Kwanyong Park , InKyu Shin , Sanghyun Woo , Chaoning Zhang , In So Kweon

Test-time adaptation (TTA) aims to transfer knowledge from a source model to unknown test data with potential distribution shifts in an online manner. Many existing TTA methods rely on entropy as a confidence metric to optimize the model.…

机器学习 · 计算机科学 2025-10-07 Chang'an Yi , Xiaohui Deng , Shuaicheng Niu , Yan Zhou

Vision-Language Models (VLMs) demonstrate impressive zero-shot generalization through large-scale image-text pretraining, yet their performance can drop once the deployment distribution diverges from the training distribution. To address…

计算机视觉与模式识别 · 计算机科学 2025-10-23 Xiaozhen Qiao , Jingkai Zhao , Yuqiu Jiang , Xianda Guo , Zhe Sun , Hongyuan Zhang , Xuelong Li

Deep convolutional neural networks have considerably improved state-of-the-art results for semantic segmentation. Nevertheless, even modern architectures lack the ability to generalize well to a test dataset that originates from a different…

计算机视觉与模式识别 · 计算机科学 2021-05-06 Robert A. Marsden , Alexander Bartler , Mario Döbler , Bin Yang

Time series anomaly detection (TSAD) plays a vital role in many industrial applications. While contrastive learning has gained momentum in the time series domain for its prowess in extracting meaningful representations from unlabeled data,…

机器学习 · 计算机科学 2025-01-28 Katrina Chen , Mingbin Feng , Tony S. Wirjanto

Question answering (QA) has recently shown impressive results for answering questions from customized domains. Yet, a common challenge is to adapt QA models to an unseen target domain. In this paper, we propose a novel self-supervised…

计算与语言 · 计算机科学 2022-10-21 Zhenrui Yue , Huimin Zeng , Bernhard Kratzwald , Stefan Feuerriegel , Dong Wang

Given the abundance of unlabeled Satellite Image Time Series (SITS) and the scarcity of labeled data, contrastive self-supervised pretraining emerges as a natural tool to leverage this vast quantity of unlabeled data. However, designing…

计算机视觉与模式识别 · 计算机科学 2025-06-24 Antoine Saget , Baptiste Lafabregue , Antoine Cornuéjols , Pierre Gançarski

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…

计算机视觉与模式识别 · 计算机科学 2024-03-27 Shohei Enomoto , Naoya Hasegawa , Kazuki Adachi , Taku Sasaki , Shin'ya Yamaguchi , Satoshi Suzuki , Takeharu Eda

Various contrastive learning approaches have been proposed in recent years and achieve significant empirical success. While effective and prevalent, contrastive learning has been less explored for time series data. A key component of…

Test-time adaptation (TTA) addresses distribution shifts for streaming test data in unsupervised settings. Currently, most TTA methods can only deal with minor shifts and rely heavily on heuristic and empirical studies. To advance TTA under…

机器学习 · 计算机科学 2024-04-09 Shurui Gui , Xiner Li , Shuiwang Ji

Uncertainty estimation of trained deep learning networks is valuable for optimizing learning efficiency and evaluating the reliability of network predictions. In this paper, we propose a method for estimating uncertainty in deep learning…

计算机视觉与模式识别 · 计算机科学 2024-02-15 Hansang Lee , Haeil Lee , Helen Hong , Junmo Kim

Test-Time Adaptation (TTA) allows to update pre-trained models to changing data distributions at deployment time. While early work tested these algorithms for individual fixed distribution shifts, recent work proposed and applied methods…

机器学习 · 计算机科学 2024-04-04 Ori Press , Steffen Schneider , Matthias Kümmerer , Matthias Bethge