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Anomaly Detection in multivariate time series is a major problem in many fields. Due to their nature, anomalies sparsely occur in real data, thus making the task of anomaly detection a challenging problem for classification algorithms to…

机器学习 · 计算机科学 2023-08-08 Anastasios Iliopoulos , John Violos , Christos Diou , Iraklis Varlamis

Anomaly detection is a critical task in industrial manufacturing, aiming to identify defective parts of products. Most industrial anomaly detection methods assume the availability of sufficient normal data for training. This assumption may…

计算机视觉与模式识别 · 计算机科学 2024-08-06 Zhenyu Yan , Qingqing Fang , Wenxi Lv , Qinliang Su

Zero-shot learning (ZSL) aims at recognizing unseen classes with knowledge transferred from seen classes. This is typically achieved by exploiting a semantic feature space (FS) shared by both seen and unseen classes, i.e., attributes or…

机器学习 · 计算机科学 2019-04-15 Jingcai Guo , Song Guo

Humans learn adaptively and efficiently throughout their lives. However, incrementally learning tasks causes artificial neural networks to overwrite relevant information learned about older tasks, resulting in 'Catastrophic Forgetting'.…

机器学习 · 计算机科学 2021-02-04 Gobinda Saha , Isha Garg , Aayush Ankit , Kaushik Roy

In this study, we dive deep into the inconsistency of pseudo targets in semi-supervised object detection (SSOD). Our core observation is that the oscillating pseudo-targets undermine the training of an accurate detector. It injects noise…

计算机视觉与模式识别 · 计算机科学 2023-03-29 Xinjiang Wang , Xingyi Yang , Shilong Zhang , Yijiang Li , Litong Feng , Shijie Fang , Chengqi Lyu , Kai Chen , Wayne Zhang

The authors have introduced a novel method for unsupervised anomaly detection that utilises a newly introduced Memory Module in their paper. We validate the authors claim that this helps improve performance by helping the network learn…

计算机视觉与模式识别 · 计算机科学 2021-02-01 Kevin Stephen , Varun Menon

To improve logical anomaly detection, some previous works have integrated segmentation techniques with conventional anomaly detection methods. Although these methods are effective, they frequently lead to unsatisfactory segmentation results…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Yu-Hsuan Hsieh , Shang-Hong Lai

Anomaly detection is concerned with identifying data patterns that deviate remarkably from the expected behaviour. This is an important research problem, due to its broad set of application domains, from data analysis to e-health,…

机器学习 · 计算机科学 2021-08-23 L. Erhan , M. Ndubuaku , M. Di Mauro , W. Song , M. Chen , G. Fortino , O. Bagdasar , A. Liotta

Ensuring safety in robotic systems remains a fundamental challenge, especially when deploying offline policy-learning methods such as imitation learning in dynamic environments. Traditional behavior cloning (BC) often fails to generalize…

机器人学 · 计算机科学 2025-09-30 Mumuksh Tayal , Manan Tayal , Ravi Prakash

Anomaly detection is an important task for complex systems (e.g., industrial facilities, manufacturing, large-scale science experiments), where failures in a sub-system can lead to low yield, faulty products, or even damage to components.…

机器学习 · 计算机科学 2023-09-06 Ryan Humble , Zhe Zhang , Finn O'Shea , Eric Darve , Daniel Ratner

Unsupervised Change Detection (UCD) in multimodal Remote Sensing (RS) images remains a difficult challenge due to the inherent spatio-temporal complexity within data, and the heterogeneity arising from different imaging sensors. Inspired by…

计算机视觉与模式识别 · 计算机科学 2025-02-19 Lei Ding , Xibing Zuo , Danfeng Hong , Haitao Guo , Jun Lu , Zhihui Gong , Lorenzo Bruzzone

Detecting anomalies in crowded video scenes is critical for public safety, enabling timely identification of potential threats. This study explores video anomaly detection within a Functional Data Analysis framework, focusing on the…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Zuzheng Wang , Fouzi Harrou , Ying Sun , Marc G Genton

We propose an efficient abnormal event detection model based on a lightweight masked auto-encoder (AE) applied at the video frame level. The novelty of the proposed model is threefold. First, we introduce an approach to weight tokens based…

计算机视觉与模式识别 · 计算机科学 2024-03-12 Nicolae-Catalin Ristea , Florinel-Alin Croitoru , Radu Tudor Ionescu , Marius Popescu , Fahad Shahbaz Khan , Mubarak Shah

We propose a new supervised dimensionality reduction technique called Supervised Linear Centroid-Encoder (SLCE), a linear counterpart of the nonlinear Centroid-Encoder (CE) \citep{ghosh2022supervised}. SLCE works by mapping the samples of a…

机器学习 · 计算机科学 2023-06-08 Tomojit Ghosh , Michael Kirby

Zero-shot learning aims at recognizing unseen classes (no training example) with knowledge transferred from seen classes. This is typically achieved by exploiting a semantic feature space shared by both seen and unseen classes, i.e.,…

计算机视觉与模式识别 · 计算机科学 2020-05-01 Jingcai Guo , Song Guo

In many applications, an anomaly detection system presents the most anomalous data instance to a human analyst, who then must determine whether the instance is truly of interest (e.g. a threat in a security setting). Unfortunately, most…

人工智能 · 计算机科学 2015-03-03 Md Amran Siddiqui , Alan Fern , Thomas G. Dietterich , Weng-Keen Wong

Direct RAW-based object detection offers great promise by utilizing RAW data (unprocessed sensor data), but faces inherent challenges due to its wide dynamic range and linear response, which tends to suppress crucial object details. In…

计算机视觉与模式识别 · 计算机科学 2025-08-07 Zhuohua Ye , Liming Zhang , Hongru Han

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…

计算机视觉与模式识别 · 计算机科学 2024-03-15 Yuxuan Cai , Xinwei He , Dingkang Liang , Ao Tong , Xiang Bai

This paper presents a novel Sliding Mode Control (SMC) algorithm to handle mismatched uncertainties in systems via a novel Self-Learning Disturbance Observer (SLDO). A computationally efficient SLDO is developed within a framework of…

系统与控制 · 电气工程与系统科学 2021-03-23 Erkan Kayacan

3D anomaly detection has recently become a significant focus in computer vision. Several advanced methods have achieved satisfying anomaly detection performance. However, they typically concentrate on the external structure of 3D samples…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Hanzhe Liang , Guoyang Xie , Chengbin Hou , Bingshu Wang , Can Gao , Jinbao Wang