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In this paper we address the abnormality detection problem in crowded scenes. We propose to use Generative Adversarial Nets (GANs), which are trained using normal frames and corresponding optical-flow images in order to learn an internal…

计算机视觉与模式识别 · 计算机科学 2017-09-01 Mahdyar Ravanbakhsh , Moin Nabi , Enver Sangineto , Lucio Marcenaro , Carlo Regazzoni , Nicu Sebe

As online systems based on machine learning are offered to public or paid subscribers via application programming interfaces (APIs), they become vulnerable to frequent exploits and attacks. This paper studies adversarial machine learning in…

机器学习 · 计算机科学 2019-01-29 Yi Shi , Yalin E. Sagduyu , Kemal Davaslioglu , Jason H. Li

Anomalous crack region detection is a typical binary semantic segmentation task, which aims to detect pixels representing cracks on pavement surface images automatically by algorithms. Although existing deep learning-based methods have…

计算机视觉与模式识别 · 计算机科学 2024-03-11 Lei Xu , Moncef Gabbouj

Deep learning has achieved overwhelming success, spanning from discriminative models to generative models. In particular, deep generative models have facilitated a new level of performance in a myriad of areas, ranging from media…

机器学习 · 计算机科学 2020-11-24 Dingfan Chen , Ning Yu , Yang Zhang , Mario Fritz

Adversarial Regression is a proposition to perform high dimensional non-linear regression with uncertainty estimation. We used Conditional Generative Adversarial Network to obtain an estimate of the full predictive distribution for a new…

机器学习 · 统计学 2019-10-22 Yoann Boget

Automating arrhythmia detection from ECG requires a robust and trusted system that retains high accuracy under electrical disturbances. Many machine learning approaches have reached human-level performance in classifying arrhythmia from…

信号处理 · 电气工程与系统科学 2022-10-14 Khondker Fariha Hossain , Sharif Amit Kamran , Alireza Tavakkoli , Xingjun Ma

Cybersecurity is a crucial step in data protection to ensure user security and personal data privacy. In this sense, many companies have started to control and restrict access to their data using authentication systems. However, these…

密码学与安全 · 计算机科学 2022-12-19 Idoia Eizaguirre-Peral , Lander Segurola-Gil , Francesco Zola

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

The increasing complexity of IoT edge networks presents significant challenges for anomaly detection, particularly in identifying sophisticated Denial-of-Service (DoS) attacks and zero-day exploits under highly dynamic and imbalanced…

机器学习 · 计算机科学 2025-12-02 Henry Onyeka , Emmanuel Samson , Liang Hong , Tariqul Islam , Imtiaz Ahmed , Kamrul Hasan

The tabular form constitutes the standard way of representing data in relational database systems and spreadsheets. But, similarly to other forms, tabular data suffers from class imbalance, a problem that causes serious performance…

机器学习 · 计算机科学 2025-08-04 Leonidas Akritidis , Panayiotis Bozanis

We propose a novel conditional GAN (cGAN) model for continuous fine-grained human action segmentation, that utilises multi-modal data and learned scene context information. The proposed approach utilises two GANs: termed Action GAN and…

计算机视觉与模式识别 · 计算机科学 2019-09-23 Harshala Gammulle , Tharindu Fernando , Simon Denman , Sridha Sridharan , Clinton Fookes

Deep neural networks (DNNs) are vulnerable to adversarial examples, which are crafted by adding imperceptible perturbations to inputs. Recently different attacks and strategies have been proposed, but how to generate adversarial examples…

机器学习 · 计算机科学 2021-01-13 Tao Bai , Jun Zhao , Jinlin Zhu , Shoudong Han , Jiefeng Chen , Bo Li , Alex Kot

Anomaly detection is a classical problem where the aim is to detect anomalous data that do not belong to the normal data distribution. Current state-of-the-art methods for anomaly detection on complex high-dimensional data are based on the…

Conditional generative adversarial networks (cGANs) have demonstrated remarkable success due to their class-wise controllability and superior quality for complex generation tasks. Typical cGANs solve the joint distribution matching problem…

机器学习 · 计算机科学 2024-09-20 Kyeongbo Kong , Kyunghun Kim , Suk-Ju Kang

We study the problem of learning generative adversarial networks (GANs) for a rare class of an unlabeled dataset subject to a labeling budget. This problem is motivated from practical applications in domains including security (e.g.,…

机器学习 · 计算机科学 2022-03-22 Zinan Lin , Hao Liang , Giulia Fanti , Vyas Sekar

Supervised deep learning methods are enjoying enormous success in many practical applications of computer vision and have the potential to revolutionize robotics. However, the marked performance degradation to biases and imbalanced data…

计算机视觉与模式识别 · 计算机科学 2020-08-14 Aadarsh Sahoo , Ankit Singh , Rameswar Panda , Rogerio Feris , Abir Das

Deep learning-based approaches achieve state-of-the-art performance in the majority of image segmentation benchmarks. However, training of such models requires a sizable amount of manual annotations. In order to reduce this effort, we…

图像与视频处理 · 电气工程与系统科学 2019-09-04 Mahdyar Ravanbakhsh , Tassilo Klein , Kayhan Batmanghelich , Moin Nabi

This paper presents a simple yet efficient method for an anomaly-based Intrusion Detection System (IDS). In reality, IDSs can be defined as a one-class classification system, where the normal traffic is the target class. The high diversity…

机器学习 · 计算机科学 2019-04-29 Bahram Mohammadi , Mohammad Sabokrou

Anomaly detection in time series data, to identify points that deviate from normal behaviour, is a common problem in various domains such as manufacturing, medical imaging, and cybersecurity. Recently, Generative Adversarial Networks (GANs)…

机器学习 · 计算机科学 2025-05-27 Md Abul Bashar , Richi Nayak

Generative Adversarial Networks (GANs) produce systematically better quality samples when class label information is provided., i.e. in the conditional GAN setup. This is still observed for the recently proposed Wasserstein GAN formulation…

机器学习 · 统计学 2018-05-18 Guillermo L. Grinblat , Lucas C. Uzal , Pablo M. Granitto