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Generalized category discovery (GCD) is a pragmatic but underexplored problem, which requires models to automatically cluster and discover novel categories by leveraging the labeled samples from old classes. The challenge is that unlabeled…

Machine Learning · Computer Science 2025-04-08 Shijie Ma , Fei Zhu , Xu-Yao Zhang , Cheng-Lin Liu

For reliable deployment of deep-learning systems, out-of-distribution (OOD) detection is indispensable. In the real world, where test-time inputs often arrive as streaming mixtures of in-distribution (ID) and OOD samples under evolving…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Wooseok Lee , Jin Mo Yang , Saewoong Bahk , Hyung-Sin Kim

We introduce an unsupervised domain adaption (UDA) strategy that combines multiple image translations, ensemble learning and self-supervised learning in one coherent approach. We focus on one of the standard tasks of UDA in which a semantic…

Computer Vision and Pattern Recognition · Computer Science 2021-07-14 Fabrizio J. Piva , Gijs Dubbelman

Unsupervised domain adaptation (UDA) aims to transfer knowledge learned from a labeled source domain to a different unlabeled target domain. Most existing UDA methods focus on learning domain-invariant feature representation, either from…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Tongkun Xu , Weihua Chen , Pichao Wang , Fan Wang , Hao Li , Rong Jin

Existing approaches to unsupervised object discovery (UOD) do not scale up to large datasets without approximations that compromise their performance. We propose a novel formulation of UOD as a ranking problem, amenable to the arsenal of…

Computer Vision and Pattern Recognition · Computer Science 2021-11-18 Huy V. Vo , Elena Sizikova , Cordelia Schmid , Patrick Pérez , Jean Ponce

Unbalanced optimal transport (UOT) extends optimal transport (OT) to take into account mass variations to compare distributions. This is crucial to make OT successful in ML applications, making it robust to data normalization and outliers.…

Optimization and Control · Mathematics 2022-01-04 Thibault Séjourné , François-Xavier Vialard , Gabriel Peyré

Optimal Transport (OT) problem investigates a transport map that bridges two distributions while minimizing a given cost function. In this regard, OT between tractable prior distribution and data has been utilized for generative modeling…

Computer Vision and Pattern Recognition · Computer Science 2024-02-07 Jaemoo Choi , Jaewoong Choi , Myungjoo Kang

Few-shot classification aims to recognize unseen classes when presented with only a small number of samples. We consider the problem of multi-domain few-shot image classification, where unseen classes and examples come from diverse data…

Machine Learning · Computer Science 2020-09-04 Lu Liu , William Hamilton , Guodong Long , Jing Jiang , Hugo Larochelle

Unsupervised domain adaptation aims to transfer knowledge from a source domain to a target domain so that the target domain data can be recognized without any explicit labelling information for this domain. One limitation of the problem…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Qian Wang , Penghui Bu , Toby P. Breckon

The success of automated medical image analysis depends on large-scale and expert-annotated training sets. Unsupervised domain adaptation (UDA) has been raised as a promising approach to alleviate the burden of labeled data collection.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Jianan Fan , Dongnan Liu , Hang Chang , Heng Huang , Mei Chen , Weidong Cai

In tissue characterization and cancer diagnostics, multimodal imaging has emerged as a powerful technique. Thanks to computational advances, large datasets can be exploited to discover patterns in pathologies and improve diagnosis. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Eva Breznik , Elisabeth Wetzer , Joakim Lindblad , Nataša Sladoje

Unsupervised Domain Adaptation (UDA) has shown significant advancements in object detection under well-lit conditions; however, its performance degrades notably in low-visibility scenarios, especially at night, posing challenges not only…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Jicheng Yuan , Anh Le-Tuan , Manfred Hauswirth , Danh Le-Phuoc

Prototypical-part methods, e.g., ProtoPNet, enhance interpretability in image recognition by linking predictions to training prototypes, thereby offering intuitive insights into their decision-making. Existing methods, which rely on a…

Computer Vision and Pattern Recognition · Computer Science 2025-04-14 Chong Wang , Yuanhong Chen , Fengbei Liu , Yuyuan Liu , Davis James McCarthy , Helen Frazer , Gustavo Carneiro

Effective code retrieval is indispensable and it has become an important paradigm to search code in hybrid mode using both natural language and code snippets. Nevertheless, it remains unclear whether existing approaches can effectively…

Software Engineering · Computer Science 2026-03-09 Yang Yang , Li Kuang , Jiakun Liu , Zhongxin Liu , Yingjie Xia , David Lo

We present a new supervised image classification method applicable to a broad class of image deformation models. The method makes use of the previously described Radon Cumulative Distribution Transform (R-CDT) for image data, whose…

Computer Vision and Pattern Recognition · Computer Science 2022-03-04 Mohammad Shifat-E-Rabbi , Xuwang Yin , Abu Hasnat Mohammad Rubaiyat , Shiying Li , Soheil Kolouri , Akram Aldroubi , Jonathan M. Nichols , Gustavo K. Rohde

Cross-domain offline reinforcement learning leverages source domain data with diverse transition dynamics to alleviate the data requirement for the target domain. However, simply merging the data of two domains leads to performance…

Machine Learning · Computer Science 2024-05-13 Xiaoyu Wen , Chenjia Bai , Kang Xu , Xudong Yu , Yang Zhang , Xuelong Li , Zhen Wang

Unsupervised domain adaptation (UDA) aims to adapt existing models of the source domain to a new target domain with only unlabeled data. Most existing methods suffer from noticeable negative transfer resulting from either the error-prone…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Qianyu Zhou , Zhengyang Feng , Qiqi Gu , Guangliang Cheng , Xuequan Lu , Jianping Shi , Lizhuang Ma

Motivated by the success of pre-trained language models such as BERT in a broad range of natural language processing (NLP) tasks, recent research efforts have been made for adapting these models for different application domains. Along this…

Computation and Language · Computer Science 2021-12-07 Denghui Zhang , Zixuan Yuan , Yanchi Liu , Hao Liu , Fuzhen Zhuang , Hui Xiong , Haifeng Chen

Image restoration aims to recover content from inputs degraded by various factors, such as adverse weather, blur, and noise. Perceptual Image Restoration (PIR) methods improve visual quality but often do not support downstream tasks…

Image and Video Processing · Electrical Eng. & Systems 2025-06-03 I-Hsiang Chen , Wei-Ting Chen , Yu-Wei Liu , Yuan-Chun Chiang , Sy-Yen Kuo , Ming-Hsuan Yang

Traditional supervised drone-view geo-localization (DVGL) methods heavily depend on paired training data and encounter difficulties in learning cross-view correlations from unpaired data. Moreover, when deployed in a new domain, these…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Zhongwei Chen , Zhao-Xu Yang , Hai-Jun Rong , Jiawei Lang , Guoqi Li