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Applying the knowledge of an object detector trained on a specific domain directly onto a new domain is risky, as the gap between two domains can severely degrade model's performance. Furthermore, since different instances commonly embody…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Minghao Xu , Hang Wang , Bingbing Ni , Qi Tian , Wenjun Zhang

Human beings can quickly adapt to environmental changes by leveraging learning experience. However, adapting deep neural networks to dynamic environments by machine learning algorithms remains a challenge. To better understand this issue,…

Computer Vision and Pattern Recognition · Computer Science 2021-03-24 Shixiang Tang , Peng Su , Dapeng Chen , Wanli Ouyang

Human beings can quickly adapt to environmental changes by leveraging learning experience. However, the poor ability of adapting to dynamic environments remains a major challenge for AI models. To better understand this issue, we study the…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Peng Su , Shixiang Tang , Peng Gao , Di Qiu , Ni Zhao , Xiaogang Wang

In medical imaging, the heterogeneity of multi-centre data impedes the applicability of deep learning-based methods and results in significant performance degradation when applying models in an unseen data domain, e.g. a new centreor a new…

Computer Vision and Pattern Recognition · Computer Science 2020-08-12 Hongwei Li , Timo Loehr , Anjany Sekuboyina , Jianguo Zhang , Benedikt Wiestler , Bjoern Menze

Detecting abnormal nodes from attributed networks is of great importance in many real applications, such as financial fraud detection and cyber security. This task is challenging due to both the complex interactions between the anomalous…

Machine Learning · Computer Science 2023-10-02 Jiaqiang Zhang , Senzhang Wang , Songcan Chen

Unsupervised Domain adaptation (UDA) attempts to recognize the unlabeled target samples by building a learning model from a differently-distributed labeled source domain. Conventional UDA concentrates on extracting domain-invariant features…

Computer Vision and Pattern Recognition · Computer Science 2020-08-28 Taotao Jing , Zhengming Ding

Segmenting unknown or anomalous object instances is a critical task in autonomous driving applications, and it is approached traditionally as a per-pixel classification problem. However, reasoning individually about each pixel without…

Computer Vision and Pattern Recognition · Computer Science 2023-09-14 Shyam Nandan Rai , Fabio Cermelli , Barbara Caputo , Carlo Masone

Anomaly detection in multivariate time series (MTS) is crucial for various applications in data mining and industry. Current industrial methods typically approach anomaly detection as an unsupervised learning task, aiming to identify…

Machine Learning · Computer Science 2024-10-14 Yuanyi Wang , Haifeng Sun , Chengsen Wang , Mengde Zhu , Jingyu Wang , Wei Tang , Qi Qi , Zirui Zhuang , Jianxin Liao

Anomaly detection, or outlier detection, is a crucial task in various domains to identify instances that significantly deviate from established patterns or the majority of data. In the context of autonomous driving, the identification of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-07 Martin Bikandi , Gorka Velez , Naiara Aginako , Itziar Irigoien

Domain generalization(DG) endeavors to develop robust models that possess strong generalizability while preserving excellent discriminability. Nonetheless, pivotal DG techniques tend to improve the feature generalizability by learning…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Shaocong Long , Qianyu Zhou , Chenhao Ying , Lizhuang Ma , Yuan Luo

Recently, large vision and language models have shown their success when adapting them to many downstream tasks. In this paper, we present a unified framework named CLIP-ADA for Anomaly Detection by Adapting a pre-trained CLIP model. To…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Yuxuan Cai , Xinwei He , Dingkang Liang , Ao Tong , Xiang Bai

Existing unsupervised domain adaptation methods based on adversarial learning have achieved good performance in several medical imaging tasks. However, these methods focus only on global distribution adaptation and ignore distribution…

Computer Vision and Pattern Recognition · Computer Science 2022-07-11 Wei Feng , Lin Wang , Lie Ju , Xin Zhao , Xin Wang , Xiaoyu Shi , Zongyuan Ge

Anomaly detection aims to detect abnormal events by a model of normality. It plays an important role in many domains such as network intrusion detection, criminal activity identity and so on. With the rapidly growing size of accessible…

Machine Learning · Computer Science 2018-08-02 Chu Wang , Yan-Ming Zhang , Cheng-Lin Liu

Semantic segmentation in autonomous driving predominantly focuses on learning from large-scale data with a closed set of known classes without considering unknown objects. Motivated by safety reasons, we address the video class agnostic…

Computer Vision and Pattern Recognition · Computer Science 2021-05-12 Mennatullah Siam , Alex Kendall , Martin Jagersand

Graph anomaly detection (GAD), which aims to identify abnormal nodes that differ from the majority within a graph, has garnered significant attention. However, current GAD methods necessitate training specific to each dataset, resulting in…

Machine Learning · Computer Science 2024-12-25 Yixin Liu , Shiyuan Li , Yu Zheng , Qingfeng Chen , Chengqi Zhang , Shirui Pan

Anomaly detection in medical imaging plays a crucial role in identifying pathological regions across various imaging modalities, such as brain MRI, liver CT, and carotid ultrasound (US). However, training fully supervised segmentation…

Image and Video Processing · Electrical Eng. & Systems 2025-07-29 Yuan Bi , Lucie Huang , Ricarda Clarenbach , Reza Ghotbi , Angelos Karlas , Nassir Navab , Zhongliang Jiang

Unsupervised domain adaptive object detection aims to adapt a well-trained detector from its original source domain with rich labeled data to a new target domain with unlabeled data. Recently, mainstream approaches perform this task through…

Computer Vision and Pattern Recognition · Computer Science 2022-03-16 Bo Zhang , Tao Chen , Bin Wang , Ruoyao Li

Domain Generalization (DG) research has gained considerable traction as of late, since the ability to generalize to unseen data distributions is a requirement that eludes even state-of-the-art training algorithms. In this paper we observe…

Machine Learning · Computer Science 2025-07-22 Aristotelis Ballas , Christos Diou

Machine learning (ML) algorithms are optimized for the distribution represented by the training data. For outlier data, they often deliver predictions with equal confidence, even though these should not be trusted. In order to deploy…

Image and Video Processing · Electrical Eng. & Systems 2021-03-17 Milda Pocevičiūtė , Gabriel Eilertsen , Claes Lundström

Obtaining models that capture imaging markers relevant for disease progression and treatment monitoring is challenging. Models are typically based on large amounts of data with annotated examples of known markers aiming at automating…

Computer Vision and Pattern Recognition · Computer Science 2017-03-20 Thomas Schlegl , Philipp Seeböck , Sebastian M. Waldstein , Ursula Schmidt-Erfurth , Georg Langs
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