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We introduce a new problem, the Online Selective Anomaly Detection (OSAD), to model a specific scenario emerging from research in sleep science. Scientists have segmented sleep into several stages and stage two is characterized by two…

机器学习 · 计算机科学 2014-03-04 Tahereh Babaie , Sanjay Chawla , Romesh Abeysuriya

Deep learning-based sequence models are extensively employed in Time Series Anomaly Detection (TSAD) tasks due to their effective sequential modeling capabilities. However, the ability of TSAD is limited by two key challenges: (i) the…

机器学习 · 计算机科学 2024-08-21 Junqi Chen , Xu Tan , Sylwan Rahardja , Jiawei Yang , Susanto Rahardja

Semi-supervised domain adaptation (SSDA) is quite a challenging problem requiring methods to overcome both 1) overfitting towards poorly annotated data and 2) distribution shift across domains. Unfortunately, a simple combination of domain…

计算机视觉与模式识别 · 计算机科学 2022-12-07 Can Qin , Lichen Wang , Qianqian Ma , Yu Yin , Huan Wang , Yun Fu

This study delves into semi-supervised object detection (SSOD) to improve detector performance with additional unlabeled data. State-of-the-art SSOD performance has been achieved recently by self-training, in which training supervision…

计算机视觉与模式识别 · 计算机科学 2021-07-13 Fangyuan Zhang , Tianxiang Pan , Bin Wang

Quantum one-class support vector machines leverage the advantage of quantum kernel methods for semi-supervised anomaly detection. However, their quadratic time complexity with respect to data size poses challenges when dealing with large…

Recent studies give more attention to the anomaly detection (AD) methods that can leverage a handful of labeled anomalies along with abundant unlabeled data. These existing anomaly-informed AD methods rely on manually predefined score…

机器学习 · 计算机科学 2023-06-27 Minqi Jiang , Songqiao Han , Hailiang Huang

We consider the problem of anomaly detection with a small set of partially labeled anomaly examples and a large-scale unlabeled dataset. This is a common scenario in many important applications. Existing related methods either exclusively…

机器学习 · 计算机科学 2021-06-11 Guansong Pang , Anton van den Hengel , Chunhua Shen , Longbing Cao

Fully Unsupervised Anomaly Detection (FUAD) is a practical extension of Unsupervised Anomaly Detection (UAD), aiming to detect anomalies without any labels even when the training set may contain anomalous samples. To achieve FUAD, we…

计算机视觉与模式识别 · 计算机科学 2025-08-26 Xinyue Liu , Jianyuan Wang , Biao Leng , Shuo Zhang

Identifying safety-critical scenarios is essential for autonomous driving, but the rarity of such events makes supervised labeling impractical. Traditional rule-based metrics like Time-to-Collision are too simplistic to capture complex…

机器学习 · 计算机科学 2026-01-29 Qing Lyu , Zhe Fu , Alexandre Bayen

Semi-supervised learning (SSL) is an important theme in machine learning, in which we have a few labeled samples and many unlabeled samples. In this paper, for SSL in a regression problem, we consider a method of incorporating information…

机器学习 · 计算机科学 2024-11-20 Katsuyuki Hagiwara

With the high requirements of automation in the era of Industry 4.0, anomaly detection plays an increasingly important role in higher safety and reliability in the production and manufacturing industry. Recently, autoencoders have been…

机器学习 · 计算机科学 2021-03-09 Yiwen Liao , Alexander Bartler , Bin Yang

Active learning has been utilized as an efficient tool in building anomaly detection models by leveraging expert feedback. In an active learning framework, a model queries samples to be labeled by experts and re-trains the model with the…

机器学习 · 计算机科学 2023-09-19 Minkyung Kim , Junsik Kim , Jongmin Yu , Jun Kyun Choi

Unsupervised anomaly detection and localization, as of one the most practical and challenging problems in computer vision, has received great attention in recent years. From the time the MVTec AD dataset was proposed to the present, new…

计算机视觉与模式识别 · 计算机科学 2022-05-31 Ye Zheng , Xiang Wang , Yu Qi , Wei Li , Liwei Wu

Hyperspectral anomaly detection (HAD), a crucial approach for many civilian and military applications, seeks to identify pixels with spectral signatures that are anomalous relative to a preponderance of background signatures. Significant…

计算机视觉与模式识别 · 计算机科学 2025-10-02 Abu Hasnat Mohammad Rubaiyat , Jordan Vincent , Colin Olson

Detecting anomalies in multivariate time-series data is essential in many real-world applications. Recently, various deep learning-based approaches have shown considerable improvements in time-series anomaly detection. However, existing…

机器学习 · 计算机科学 2022-01-31 Kyeong-Joong Jeong , Yong-Min Shin

With the abundance of industrial datasets, imbalanced classification has become a common problem in several application domains. Oversampling is an effective method to solve imbalanced classification. One of the main challenges of the…

机器学习 · 计算机科学 2022-07-18 Min Qian , Yan-Fu Li

Unsupervised embedding learning aims to extract good representation from data without the need for any manual labels, which has been a critical challenge in many supervised learning tasks. This paper proposes a new unsupervised embedding…

机器学习 · 计算机科学 2020-02-28 Sungwon Han , Yizhan Xu , Sungwon Park , Meeyoung Cha , Cheng-Te Li

Anomaly detection in time-series has a wide range of practical applications. While numerous anomaly detection methods have been proposed in the literature, a recent survey concluded that no single method is the most accurate across various…

机器学习 · 计算机科学 2023-03-14 Mononito Goswami , Cristian Challu , Laurent Callot , Lenon Minorics , Andrey Kan

Anomaly Detection (AD) defines the task of identifying observations or events that deviate from typical - or normal - patterns, a critical capability in IT security for recognizing incidents such as system misconfigurations, malware…

The impressive advancements in semi-supervised learning have driven researchers to explore its potential in object detection tasks within the field of computer vision. Semi-Supervised Object Detection (SSOD) leverages a combination of a…

计算机视觉与模式识别 · 计算机科学 2024-07-17 Tahira Shehzadi , Ifza , Didier Stricker , Muhammad Zeshan Afzal