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Novelty detection is the process of determining whether a query example differs from the learned training distribution. Previous methods attempt to learn the representation of the normal samples via generative adversarial networks (GANs).…

计算机视觉与模式识别 · 计算机科学 2021-06-21 Chengwei Chen , Yuan Xie , Shaohui Lin , Ruizhi Qiao , Jian Zhou , Xin Tan , Yi Zhang , Lizhuang Ma

Generative neural samplers are probabilistic models that implement sampling using feedforward neural networks: they take a random input vector and produce a sample from a probability distribution defined by the network weights. These models…

机器学习 · 统计学 2016-06-03 Sebastian Nowozin , Botond Cseke , Ryota Tomioka

Anomaly detection is referred to as a process in which the aim is to detect data points that follow a different pattern from the majority of data points. Anomaly detection methods suffer from several well-known challenges that hinder their…

机器学习 · 计算机科学 2021-08-31 Kasra Babaei , Zhi Yuan Chen , Tomas Maul

Graph contrastive learning (GCL) often suffers from false negatives, which degrades the performance on downstream tasks. The existing methods addressing the false negative issue usually rely on human prior knowledge, still leading GCL to…

机器学习 · 计算机科学 2025-05-16 Yiyang Zhao , Chengpei Wu , Lilin Zhang , Ning Yang

Generative adversarial networks (GANs) have shown promise for various problems including anomaly detection. When anomaly detection is performed using GAN models that learn only the features of normal data samples, data that are not similar…

机器学习 · 计算机科学 2020-12-23 Teguh Budianto , Tomohiro Nakai , Kazunori Imoto , Takahiro Takimoto , Kosuke Haruki

The goal of anomaly detection is to identify anomalous samples from normal ones. In this paper, a small number of anomalies are assumed to be available at the training stage, but they are assumed to be collected only from several anomaly…

机器学习 · 计算机科学 2022-05-03 Bowen Tian , Qinliang Su , Jian Yin

Many natural language inference (NLI) datasets contain biases that allow models to perform well by only using a biased subset of the input, without considering the remainder features. For instance, models are able to make a classification…

计算与语言 · 计算机科学 2021-09-01 Dimion Asael , Zachary Ziegler , Yonatan Belinkov

Generative models are known to be difficult to assess. Recent works, especially on generative adversarial networks (GANs), produce good visual samples of varied categories of images. However, the validation of their quality is still…

机器学习 · 计算机科学 2019-09-25 Timothée Lesort , Andrei Stoain , Jean-François Goudou , David Filliat

Layout designs are encountered in a variety of fields. For problems with many design degrees of freedom, efficiency of design methods becomes a major concern. In recent years, machine learning methods such as artificial neural networks have…

机器学习 · 计算机科学 2021-02-01 Chao Qian , Renkai Tan , Wenjing Ye

Generative Adversarial Networks (GANs) have proven to be a powerful framework for learning to draw samples from complex distributions. However, GANs are also notoriously difficult to train, with mode collapse and oscillations a common…

机器学习 · 统计学 2018-11-28 Kevin J Liang , Chunyuan Li , Guoyin Wang , Lawrence Carin

We propose a novel technique to make neural network robust to adversarial examples using a generative adversarial network. We alternately train both classifier and generator networks. The generator network generates an adversarial…

机器学习 · 计算机科学 2023-07-06 Hyeungill Lee , Sungyeob Han , Jungwoo Lee

There remains an important need for the development of image reconstruction methods that can produce diagnostically useful images from undersampled measurements. In magnetic resonance imaging (MRI), for example, such methods can facilitate…

图像与视频处理 · 电气工程与系统科学 2021-06-28 Varun A. Kelkar , Sayantan Bhadra , Mark A. Anastasio

Generative Adversarial Networks (GANs) have been shown to be powerful and flexible priors when solving inverse problems. One challenge of using them is overcoming representation error, the fundamental limitation of the network in…

机器学习 · 计算机科学 2022-04-12 Sean Gunn , Jorio Cocola , Paul Hand

Generative Adversarial Networks (GANs) have known a tremendous success for many continuous generation tasks, especially in the field of image generation. However, for discrete outputs such as language, optimizing GANs remains an open…

We present a variety of new architectural features and training procedures that we apply to the generative adversarial networks (GANs) framework. We focus on two applications of GANs: semi-supervised learning, and the generation of images…

机器学习 · 计算机科学 2016-06-14 Tim Salimans , Ian Goodfellow , Wojciech Zaremba , Vicki Cheung , Alec Radford , Xi Chen

Recently, machine learning has been introduced in the inverse design of physical devices, i.e., the automatic generation of device geometries for a desired physical response. In particular, generative adversarial networks have been proposed…

光学 · 物理学 2025-02-18 Timo Gahlmann , Philippe Tassin

Generative models with an encoding component such as autoencoders currently receive great interest. However, training of autoencoders is typically complicated by the need to train a separate encoder and decoder model that have to be…

机器学习 · 计算机科学 2018-08-24 Robin Tibor Schirrmeister , Patryk Chrabąszcz , Frank Hutter , Tonio Ball

Modern deep artificial neural networks have achieved great success in the domain of computer vision and beyond. However, their application to many real-world tasks is undermined by certain limitations, such as overconfident uncertainty…

机器学习 · 计算机科学 2022-05-05 Adrián Csiszárik , Beatrix Benkő , Dániel Varga

Anomaly detection is an important problem in computer vision; however, the scarcity of anomalous samples makes this task difficult. Thus, recent anomaly detection methods have used only normal images with no abnormal areas for training. In…

计算机视觉与模式识别 · 计算机科学 2022-10-17 Shinji Yamada , Satoshi Kamiya , Kazuhiro Hotta

As machine learning continues to develop, and data misuse scandals become more prevalent, individuals are becoming increasingly concerned about their personal information and are advocating for the right to remove their data. Machine…

机器学习 · 计算机科学 2023-08-22 Hui Sun , Tianqing Zhu , Wenhan Chang , Wanlei Zhou