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The goal of imitation learning is to mimic expert behavior from demonstrations, without access to an explicit reward signal. A popular class of approach infers the (unknown) reward function via inverse reinforcement learning (IRL) followed…

Machine Learning · Computer Science 2022-04-19 Carl Qi , Pieter Abbeel , Aditya Grover

Test-Time Training (TTT) has recently emerged as a promising direction for efficient sequence modeling. TTT reformulates attention operation as an online learning problem, constructing a compact inner model from key-value pairs at test…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Dongchen Han , Yining Li , Tianyu Li , Zixuan Cao , Ziming Wang , Jun Song , Yu Cheng , Bo Zheng , Gao Huang

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

Deep learning has made significant progress in addressing challenges in various fields including computational pathology (CPath). However, due to the complexity of the domain shift problem, the performance of existing models will degrade,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Biwen Meng , Xi Long , Wanrong Yang , Ruochen Liu , Yi Tian , Yalin Zheng , Jingxin Liu

Modeling dynamic temporal dependencies is a critical challenge in time series pre-training, which evolve due to distribution shifts and multi-scale patterns. This temporal variability severely impairs the generalization of pre-trained…

Machine Learning · Computer Science 2025-09-19 Yuemin Wu , Zhongze Wu , Xiu Su , Feng Yang , Hongyan Xu , Xi Lin , Wenti Huang , Shan You , Chang Xu

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) enhances the zero-shot robustness under distribution shifts by leveraging unlabeled test data during inference. Despite notable advances, several challenges still limit its broader applicability. First, most…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Youjia Zhang , Youngeun Kim , Young-Geun Choi , Hongyeob Kim , Huiling Liu , Sungeun Hong

Deep models often suffer significant performance degradation under distribution shifts. Domain generalization (DG) seeks to mitigate this challenge by enabling models to generalize to unseen domains. Most prior approaches rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Zhicheng Lin , Xiaolin Wu , Xi Zhang

To facilitate a wide-spread acceptance of AI systems guiding decision making in real-world applications, trustworthiness of deployed models is key. That is, it is crucial for predictive models to be uncertainty-aware and yield…

Machine Learning · Computer Science 2021-03-04 Christian Tomani , Florian Buettner

The remarkable progress in deep learning (DL) showcases outstanding results in various computer vision tasks. However, adaptation to real-time variations in data distributions remains an important challenge. Test-Time Training (TTT) was…

Computer Vision and Pattern Recognition · Computer Science 2024-11-28 Marco Colussi , Sergio Mascetti , Jose Dolz , Christian Desrosiers

Models should be able to adapt to unseen data during test-time to avoid performance drops caused by inevitable distribution shifts in real-world deployment scenarios. In this work, we tackle the practical yet challenging test-time…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Yunhe Gao , Xingjian Shi , Yi Zhu , Hao Wang , Zhiqiang Tang , Xiong Zhou , Mu Li , Dimitris N. Metaxas

Randomness is an unavoidable part of training deep learning models, yet something that traditional training data attribution algorithms fail to rigorously account for. They ignore the fact that, due to stochasticity in the initialisation…

Machine Learning · Computer Science 2025-10-28 Bruno Mlodozeniec , Isaac Reid , Sam Power , David Krueger , Murat Erdogdu , Richard E. Turner , Roger Grosse

Test-time adaptation (TTA) is an emerging paradigm that addresses distributional shifts between training and testing phases without additional data acquisition or labeling cost; only unlabeled test data streams are used for continual model…

Machine Learning · Computer Science 2023-01-12 Taesik Gong , Jongheon Jeong , Taewon Kim , Yewon Kim , Jinwoo Shin , Sung-Ju Lee

Object recognition is a key enabler across industry and defense. As technology changes, algorithms must keep pace with new requirements and data. New modalities and higher resolution sensors should allow for increased algorithm robustness.…

Computer Vision and Pattern Recognition · Computer Science 2020-12-24 Samuel Rivera , Joel Klipfel , Deborah Weeks

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…

Machine Learning · Computer Science 2023-03-06 Chenyan Wu , Yimu Pan , Yandong Li , James Z. Wang

Transfer learning of diffusion models to smaller target domains is challenging, as naively fine-tuning the model often results in poor generalization. Test-time guidance methods help mitigate this by offering controllable improvements in…

Graphics · Computer Science 2026-01-21 Yara Bahram , Mohammadhadi Shateri , Eric Granger

Imitation Learning can train robots to perform complex and diverse manipulation tasks, but learned policies are brittle with observations outside of the training distribution. 3D scene representations that incorporate observations from…

Computer Vision and Pattern Recognition · Computer Science 2025-05-19 Albert Wilcox , Mohamed Ghanem , Masoud Moghani , Pierre Barroso , Benjamin Joffe , Animesh Garg

Imitation learning provides an efficient way to teach robots dexterous skills; however, learning complex skills robustly and generalizablely usually consumes large amounts of human demonstrations. To tackle this challenging problem, we…

Robotics · Computer Science 2024-09-30 Yanjie Ze , Gu Zhang , Kangning Zhang , Chenyuan Hu , Muhan Wang , Huazhe Xu

Transferability estimation identifies the best pre-trained models for downstream tasks without incurring the high computational cost of full fine-tuning. This capability facilitates deployment and advances the pre-training and fine-tuning…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Yaoyan Zheng , Huiqun Wang , Nan Zhou , Di Huang

Deep learning-based weather prediction models have advanced significantly in recent years. However, data-driven models based on deep learning are difficult to apply to real-world applications because they are vulnerable to spatial-temporal…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Minseok Seo , Doyi Kim , Seungheon Shin , Eunbin Kim , Sewoong Ahn , Yeji Choi