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Due to the difficulty of obtaining ground-truth labels, learning from virtual-world datasets is of great interest for real-world applications like semantic segmentation. From domain adaptation perspective, the key challenge is to learn…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Fengyi Shen , Akhil Gurram , Ahmet Faruk Tuna , Onay Urfalioglu , Alois Knoll

Continual test-time adaptation (CTTA) has recently emerged to adapt a pre-trained source model to continuously evolving target distributions, which accommodates the dynamic nature of real-world environments. To mitigate the risk of…

Machine Learning · Computer Science 2024-12-13 Chaoran Cui , Yongrui Zhen , Shuai Gong , Chunyun Zhang , Hui Liu , Yilong Yin

Domain generalization involves learning a classifier from a heterogeneous collection of training sources such that it generalizes to data drawn from similar unknown target domains, with applications in large-scale learning and personalized…

Machine Learning · Computer Science 2021-12-24 Xavier Thomas , Dhruv Mahajan , Alex Pentland , Abhimanyu Dubey

Continual Test-Time Adaptation (CTTA) generalizes conventional Test-Time Adaptation (TTA) by assuming that the target domain is dynamic over time rather than stationary. In this paper, we explore Multi-Modal Continual Test-Time Adaptation…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Haozhi Cao , Yuecong Xu , Jianfei Yang , Pengyu Yin , Shenghai Yuan , Lihua Xie

While linear-complexity attention mechanisms offer a promising alternative to Softmax attention for overcoming the quadratic bottleneck, training such models from scratch remains prohibitively expensive. Inheriting weights from pretrained…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Yining Li , Dongchen Han , Zeyu Liu , Hanyi Wang , Yulin Wang , Gao Huang

This paper investigates test-time adaptation (TTA) for regression, where a regression model pre-trained in a source domain is adapted to an unknown target distribution with unlabeled target data. Although regression is one of the…

Machine Learning · Computer Science 2025-01-24 Kazuki Adachi , Shin'ya Yamaguchi , Atsutoshi Kumagai , Tomoki Hamagami

Deploying machine learning (ML) models in the wild is challenging as it suffers from distribution shifts, where the model trained on an original domain cannot generalize well to unforeseen diverse transfer domains. To address this…

Cryptography and Security · Computer Science 2023-08-17 Tianshuo Cong , Xinlei He , Yun Shen , Yang Zhang

Representation learning for time series using contrastive learning has emerged as a critical technique for improving the performance of downstream tasks. To advance this effective approach, we introduce CaTT (\textit{Contrast All The…

Machine Learning · Computer Science 2025-07-16 Abdul-Kazeem Shamba , Kerstin Bach , Gavin Taylor

Test-Time Optimization enables models to adapt to new data during inference by updating parameters on-the-fly. Recent advances in Vision-Language Models (VLMs) have explored learning prompts at test time to improve performance in downstream…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Dhruv Sarkar , Aprameyo Chakrabartty , Bibhudatta Bhanja

Test-time training (TTT) adapts language models through gradient-based updates at inference. But is adaptation the right strategy? We study compute-optimal test-time strategies for verifiable execution-grounded (VEG) tasks, domains like GPU…

Machine Learning · Computer Science 2026-02-10 Jarrod Barnes

Supervised causal learning has shown promise in causal discovery, yet it often struggles with generalization across diverse interventional settings, particularly when intervention targets are unknown. To address this, we propose TICL…

Machine Learning · Computer Science 2026-02-24 Wei Chen , Rui Ding , Bojun Huang , Yang Zhang , Qiang Fu , Yuxuan Liang , Han Shi , Dongmei Zhang

Recent work on time-series models has leveraged self-supervised training to learn meaningful features and patterns in order to improve performance on downstream tasks and generalize to unseen modalities. While these pretraining methods have…

Machine Learning · Computer Science 2026-04-10 Paul Quinlan , Qingguo Li , Xiaodan Zhu

Test-time Reinforcement Learning (TTRL) has shown promise in adapting foundation models for complex tasks at test-time, resulting in large performance improvements. TTRL leverages an elegant two-phase sampling strategy: first,…

Machine Learning · Computer Science 2025-11-11 Peyman Hosseini , Ondrej Bohdal , Taha Ceritli , Ignacio Castro , Matthew Purver , Mete Ozay , Umberto Michieli

Semi-Supervised Learning (SSL) and Unsupervised Domain Adaptation (UDA) enhance the model performance by exploiting information from labeled and unlabeled data. The clustering assumption has proven advantageous for learning with limited…

Computer Vision and Pattern Recognition · Computer Science 2025-07-21 Durgesh Singh , Ahcène Boubekki , Robert Jenssen , Michael Kampffmeyer

Post-training quantization (PTQ) reduces excessive hardware cost by quantizing full-precision models into lower bit representations on a tiny calibration set, without retraining. Despite the remarkable progress made through recent efforts,…

Machine Learning · Computer Science 2024-12-16 Junrui Xiao , Zhikai Li , Lianwei Yang , Yiduo Mei , Qingyi Gu

Scaling test-time compute has emerged as a powerful mechanism for enhancing Large Language Model (LLM) performance. However, standard post-training paradigms, Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL), optimize the…

Machine Learning · Computer Science 2026-05-21 Adam Ousherovitch , Ambuj Tewari

Test-Time Training (TTT) proposes to adapt a pre-trained network to changing data distributions on-the-fly. In this work, we propose the first TTT method for 3D semantic segmentation, TTT-KD, which models Knowledge Distillation (KD) from…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Lisa Weijler , Muhammad Jehanzeb Mirza , Leon Sick , Can Ekkazan , Pedro Hermosilla

Neural networks have demonstrated exceptional performance in supervised learning, benefiting from abundant high-quality annotated data. However, obtaining such data in real-world scenarios is costly and labor-intensive. Semi-supervised…

Machine Learning · Computer Science 2025-06-03 Shuai Zhao , Heyan Huang , Xinge Li , Xiaokang Chen , Rui Wang

We consider the problem of online unsupervised cross-domain adaptation, where two independent but related data streams with different feature spaces -- a fully labeled source stream and an unlabeled target stream -- are learned together.…

Machine Learning · Computer Science 2021-10-05 Marcus de Carvalho , Mahardhika Pratama , Jie Zhang , Edward Yapp

We introduce a novel tracklet-based dataset for benchmarking test-time adaptation (TTA) methods. The aim of this dataset is to mimic the intricate challenges encountered in real-world environments such as images captured by hand-held…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Shyma Alhuwaider , Motasem Alfarra , Juan C. Perez , Merey Ramazanova , Bernard Ghanem