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Space exploration has always been a source of inspiration for humankind, and thanks to modern telescopes, it is now possible to observe celestial bodies far away from us. With a growing number of real and imaginary images of space available…

计算机视觉与模式识别 · 计算机科学 2021-11-24 Davide Coccomini , Nicola Messina , Claudio Gennaro , Fabrizio Falchi

In this paper, we present a memory-augmented algorithm for anomaly detection. Classical anomaly detection algorithms focus on learning to model and generate normal data, but typically guarantees for detecting anomalous data are weak. The…

机器学习 · 计算机科学 2020-02-10 Ziyi Yang , Teng Zhang , Iman Soltani Bozchalooi , Eric Darve

One of the main challenges in the parametrization of geological models is the ability to capture complex geological structures often observed in the subsurface. In recent years, generative adversarial networks (GAN) were proposed as an…

机器学习 · 统计学 2019-04-10 Shing Chan , Ahmed H. Elsheikh

Generative Adversarial Networks (GANs) have been impactful on many problems and applications but suffer from unstable training. The Wasserstein GAN (WGAN) leverages the Wasserstein distance to avoid the caveats in the minmax two-player…

机器学习 · 统计学 2021-09-14 Yao Chen , Qingyi Gao , Xiao Wang

In many anomaly detection tasks, where anomalous data rarely appear and are difficult to collect, training using only normal data is important. Although it is possible to manually create anomalous data using prior knowledge, they may be…

机器学习 · 计算机科学 2022-05-10 Hironori Murase , Kenji Fukumizu

High-resolution (HR) precipitation prediction is essential for reducing damage from stationary and localized heavy rainfall; however, HR precipitation forecasts using process-driven numerical weather prediction models remains challenging.…

机器学习 · 计算机科学 2026-05-19 Kenta Shiraishi , Yuka Muto , Atsushi Okazaki , Shunji Kotsuki

Attributing the pixels of an input image to a certain category is an important and well-studied problem in computer vision, with applications ranging from weakly supervised localisation to understanding hidden effects in the data. In recent…

计算机视觉与模式识别 · 计算机科学 2018-06-27 Christian F. Baumgartner , Lisa M. Koch , Kerem Can Tezcan , Jia Xi Ang , Ender Konukoglu

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

Anomaly detection from graph data has drawn much attention due to its practical significance in many critical applications including cybersecurity, finance, and social networks. Existing data mining and machine learning methods are either…

机器学习 · 计算机科学 2022-01-25 Yu Zheng , Ming Jin , Yixin Liu , Lianhua Chi , Khoa T. Phan , Yi-Ping Phoebe Chen

Generative Adversarial Networks (GANs) have shown great promise in modeling high dimensional data. The learning objective of GANs usually minimizes some measure discrepancy, \textit{e.g.}, $f$-divergence~($f$-GANs) or Integral Probability…

机器学习 · 计算机科学 2020-04-07 Yuxuan Song , Qiwei Ye , Minkai Xu , Tie-Yan Liu

We present variational generative adversarial networks, a general learning framework that combines a variational auto-encoder with a generative adversarial network, for synthesizing images in fine-grained categories, such as faces of a…

计算机视觉与模式识别 · 计算机科学 2018-02-06 Jianmin Bao , Dong Chen , Fang Wen , Houqiang Li , Gang Hua

Anomaly detection plays in many fields of research, along with the strongly related task of outlier detection, a very important role. Especially within the context of the automated analysis of video material recorded by surveillance…

计算机视觉与模式识别 · 计算机科学 2019-08-09 Thomas Golda , Nils Murzyn , Chengchao Qu , Kristian Kroschel

Generative modeling over natural images is one of the most fundamental machine learning problems. However, few modern generative models, including Wasserstein Generative Adversarial Nets (WGANs), are studied on manifold-valued images that…

计算机视觉与模式识别 · 计算机科学 2019-01-04 Zhiwu Huang , Jiqing Wu , Luc Van Gool

In the recent years Generative Adversarial Networks (GANs) have demonstrated significant progress in generating authentic looking data. In this work we introduce our simple method to exploit the advancements in well established image-based…

机器学习 · 计算机科学 2019-10-31 Eoin Brophy , Zhengwei Wang , Tomas E. Ward

Adversarial attacks on image classification systems have always been an important problem in the field of machine learning, and generative adversarial networks (GANs), as popular models in the field of image generation, have been widely…

计算机视觉与模式识别 · 计算机科学 2024-12-25 Yahe Yang

When formulated as an unsupervised learning problem, anomaly detection often requires a model to learn the distribution of normal data. Previous works apply Generative Adversarial Networks (GANs) to anomaly detection tasks and show good…

机器学习 · 计算机科学 2021-06-15 Xu Han , Xiaohui Chen , Li-Ping Liu

Detecting changed regions in paired satellite images plays a key role in many remote sensing applications. The evolution of recent techniques could provide satellite images with very high spatial resolution (VHR) but made it challenging to…

图像与视频处理 · 电气工程与系统科学 2021-12-08 Caijun Ren , Xiangyu Wang , Jian Gao , Huanhuan Chen

In this study, a new Anomaly Detection (AD) approach for industrial and medical images is proposed. This method leverages the theoretical strengths of unsupervised learning and the data availability of both normal and abnormal classes.…

计算机视觉与模式识别 · 计算机科学 2024-01-24 Arnaud Bougaham , Valentin Delchevalerie , Mohammed El Adoui , Benoît Frénay

Anomaly detection incurs certain sampling and sensing costs and therefore it is of great importance to strike a balance between the detection accuracy and these costs. In this work, we study anomaly detection by considering the detection of…

机器学习 · 计算机科学 2020-09-30 Chen Zhong , M. Cenk Gursoy , Senem Velipasalar

Automatic colorization of images without human intervention has been a subject of interest in the machine learning community for a brief period of time. Assigning color to an image is a highly ill-posed problem because of its innate nature…

图像与视频处理 · 电气工程与系统科学 2021-12-30 Shreyas Kalvankar , Hrushikesh Pandit , Pranav Parwate , Atharva Patil , Snehal Kamalapur