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Anomaly detection is a classical problem in computer vision, namely the determination of the normal from the abnormal when datasets are highly biased towards one class (normal) due to the insufficient sample size of the other class…

计算机视觉与模式识别 · 计算机科学 2018-11-14 Samet Akcay , Amir Atapour-Abarghouei , Toby P. Breckon

Abnormal crowd behaviour detection attracts a large interest due to its importance in video surveillance scenarios. However, the ambiguity and the lack of sufficient abnormal ground truth data makes end-to-end training of large deep…

计算机视觉与模式识别 · 计算机科学 2018-11-28 Mahdyar Ravanbakhsh , Enver Sangineto , Moin Nabi , Nicu Sebe

Smart grids are crucial for meeting rising energy demands driven by global population growth and urbanization. By integrating renewable energy sources, they enhance efficiency, reliability, and sustainability. However, ensuring their…

密码学与安全 · 计算机科学 2025-06-25 Emad Efatinasab , Alessandro Brighente , Denis Donadel , Mauro Conti , Mirco Rampazzo

Recently introduced generative adversarial network (GAN) has been shown numerous promising results to generate realistic samples. The essential task of GAN is to control the features of samples generated from a random distribution. While…

机器学习 · 计算机科学 2019-04-02 Minhyeok Lee , Junhee Seok

Anomaly detection, a critical facet in data analysis, involves identifying patterns that deviate from expected behavior. This research addresses the complexities inherent in anomaly detection, exploring challenges and adapting to…

机器学习 · 计算机科学 2024-05-07 Aditya Singh , Pavan Reddy

One key challenge in Out-of-Distribution (OOD) detection is the absence of ground-truth OOD samples during training. One principled approach to address this issue is to use samples from external datasets as outliers (i.e., pseudo OOD…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Wenjun Miao , Guansong Pang , Jin Zheng , Xiao Bai

Standard machine learning is unable to accommodate inputs which do not belong to the training distribution. The resulting models often give rise to confident incorrect predictions which may lead to devastating consequences. This problem is…

计算机视觉与模式识别 · 计算机科学 2023-08-01 Matej Grcić , Petra Bevandić , Zoran Kalafatić , Siniša Šegvić

The superiority of graph contrastive learning (GCL) has prompted its application to anomaly detection tasks for more powerful risk warning systems. Unfortunately, existing GCL-based models tend to excessively prioritize overall detection…

机器学习 · 计算机科学 2025-07-22 Yiming Xu , Zhen Peng , Bin Shi , Xu Hua , Bo Dong , Song Wang , Chen Chen

A basic, and still largely unanswered, question in the context of Generative Adversarial Networks (GANs) is whether they are truly able to capture all the fundamental characteristics of the distributions they are trained on. In particular,…

机器学习 · 计算机科学 2018-06-07 Shibani Santurkar , Ludwig Schmidt , Aleksander Mądry

Generative adversarial networks (GAN) present state-of-the-art results in the generation of samples following the distribution of the input dataset. However, GANs are difficult to train, and several aspects of the model should be previously…

神经与进化计算 · 计算机科学 2019-12-16 Victor Costa , Nuno Lourenço , João Correia , Penousal Machado

Generative Adversarial Network (GAN) is a current focal point of research. The body of knowledge is fragmented, leading to a trial-error method while selecting an appropriate GAN for a given scenario. We provide a comprehensive summary of…

机器学习 · 计算机科学 2021-05-18 Tanya Motwani , Manojkumar Parmar

Generative adversarial networks (GANs) implicitly learn the probability distribution of a dataset and can draw samples from the distribution. This paper presents, Tabular GAN (TGAN), a generative adversarial network which can generate…

机器学习 · 计算机科学 2018-11-29 Lei Xu , Kalyan Veeramachaneni

This paper proposes a novel fault diagnosis approach based on generative adversarial networks (GAN) for imbalanced industrial time series where normal samples are much larger than failure cases. We combine a well-designed feature extractor…

机器学习 · 计算机科学 2022-06-17 Wenqian Jiang , Cheng Cheng , Beitong Zhou , Guijun Ma , Ye Yuan

Image generation has been heavily investigated in computer vision, where one core research challenge is to generate images from arbitrarily complex distributions with little supervision. Generative Adversarial Networks (GANs) as an implicit…

计算机视觉与模式识别 · 计算机科学 2021-08-19 Hui Ying , He Wang , Tianjia Shao , Yin Yang , Kun Zhou

Many complex networks in natural and social phenomena have often been characterized by heavy-tailed degree distributions. However, due to rapidly growing size of network data and concerns on privacy issues about using these data, it becomes…

物理与社会 · 物理学 2015-05-19 Young-Ho Eom , Hang-Hyun Jo

We present Optimal Transport GAN (OT-GAN), a variant of generative adversarial nets minimizing a new metric measuring the distance between the generator distribution and the data distribution. This metric, which we call mini-batch energy…

机器学习 · 计算机科学 2018-03-16 Tim Salimans , Han Zhang , Alec Radford , Dimitris Metaxas

We present an approach to quantifying both aleatoric and epistemic uncertainty for deep neural networks in image classification, based on generative adversarial networks (GANs). While most works in the literature that use GANs to generate…

计算机视觉与模式识别 · 计算机科学 2023-01-10 Philipp Oberdiek , Gernot A. Fink , Matthias Rottmann

Detecting an Out-of-Domain (OOD) utterance is crucial for a robust dialog system. Most dialog systems are trained on a pool of annotated OOD data to achieve this goal. However, collecting the annotated OOD data for a given domain is an…

计算与语言 · 计算机科学 2021-04-07 Petr Marek , Vishal Ishwar Naik , Vincent Auvray , Anuj Goyal

In this paper, we propose a generative adversarial network (GAN)-based hyperspectral anomaly detection algorithm. In the proposed algorithm, we train a GAN model to generate a synthetic background image which is close to the original…

图像与视频处理 · 电气工程与系统科学 2021-01-22 Sertac Arisoy , Nasser M. Nasrabadi , Koray Kayabol

In terms of Generative Adversarial Networks (GANs), the information metric to discriminate the generative data from the real data, lies in the key point of generation efficiency, which plays an important role in GAN-based applications,…

机器学习 · 计算机科学 2021-01-08 Rui She , Pingyi Fan