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The key to overcome class imbalance problems is to capture the distribution of minority class accurately. Generative Adversarial Networks (GANs) have shown some potentials to tackle class imbalance problems due to their capability of…

机器学习 · 计算机科学 2020-08-06 Jingyu Hao , Chengjia Wang , Heye Zhang , Guang Yang

Training GANs in low-data regimes remains a challenge, as overfitting often leads to memorization or training divergence. In this work, we introduce One-Shot GAN that can learn to generate samples from a training set as little as one image…

计算机视觉与模式识别 · 计算机科学 2021-05-13 Vadim Sushko , Juergen Gall , Anna Khoreva

Subspace learning is a critical endeavor in contemporary machine learning, particularly given the vast dimensions of modern datasets. In this study, we delve into the training dynamics of a single-layer GAN model from the perspective of…

机器学习 · 计算机科学 2024-11-04 Andrew Bond , Zafer Dogan

The classification of forged videos has been a challenge for the past few years. Deepfake classifiers can now reliably predict whether or not video frames have been tampered with. However, their performance is tied to both the dataset used…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Matthieu Delmas , Renaud Seguier

Generative adversarial networks (GANs) provide an algorithmic framework for constructing generative models with several appealing properties: they do not require a likelihood function to be specified, only a generating procedure; they…

机器学习 · 统计学 2017-02-28 Shakir Mohamed , Balaji Lakshminarayanan

This paper addresses the dual challenge of improving anomaly detection and signal integrity in high-speed dynamic random access memory signals. To achieve this, we propose a joint training framework that integrates an autoencoder with a…

机器学习 · 计算机科学 2025-06-24 Muhammad Usama , Hee-Deok Jang , Soham Shanbhag , Yoo-Chang Sung , Seung-Jun Bae , Dong Eui Chang

Many neural network-based out-of-distribution (OoD) detection methods have been proposed. However, they require many training data for each target task. We propose a simple yet effective meta-learning method to detect OoD with small…

机器学习 · 统计学 2022-06-22 Tomoharu Iwata , Atsutoshi Kumagai

Open-set recognition and adversarial defense study two key aspects of deep learning that are vital for real-world deployment. The objective of open-set recognition is to identify samples from open-set classes during testing, while…

计算机视觉与模式识别 · 计算机科学 2020-09-03 Rui Shao , Pramuditha Perera , Pong C. Yuen , Vishal M. Patel

We propose a new algorithm for training generative adversarial networks that jointly learns latent codes for both identities (e.g. individual humans) and observations (e.g. specific photographs). By fixing the identity portion of the latent…

机器学习 · 计算机科学 2018-02-26 Chris Donahue , Zachary C. Lipton , Akshay Balsubramani , Julian McAuley

For open world applications, deep neural networks (DNNs) need to be aware of previously unseen data and adaptable to evolving environments. Furthermore, it is desirable to detect and learn novel classes which are not included in the DNNs…

计算机视觉与模式识别 · 计算机科学 2023-05-03 Svenja Uhlemeyer , Julian Lienen , Eyke Hüllermeier , Hanno Gottschalk

Recently, anomaly scores have been formulated using reconstruction loss of the adversarially learned generators and/or classification loss of discriminators. Unavailability of anomaly examples in the training data makes optimization of such…

计算机视觉与模式识别 · 计算机科学 2024-10-28 Muhammad Zaigham Zaheer , Jin Ha Lee , Arif Mahmood , Marcella Astrid , Seung-Ik Lee

Graph neural networks (GNNs) face significant challenges with class imbalance, leading to biased inference results. To address this issue in heterogeneous graphs, we propose a novel framework that combines Graph Neural Network (GNN) and…

机器学习 · 计算机科学 2024-11-26 Hung-Chun Hsu , Bo-Jun Wu , Ming-Yi Hong , Che Lin , Chih-Yu Wang

Traditional anomaly detection methods focus on detecting inter-class variations while medical image novelty identification is inherently an intra-class detection problem. For example, a machine learning model trained with normal chest X-ray…

计算机视觉与模式识别 · 计算机科学 2022-01-25 Xiaoyuan Guo , Judy Wawira Gichoya , Saptarshi Purkayastha , Imon Banerjee

With more and more adoption of Deep Learning (DL) in the field of image processing, computer vision and NLP, researchers have begun to apply DL to tackle with encrypted traffic classification problems. Although these methods can…

密码学与安全 · 计算机科学 2019-11-28 Pan Wang , Shuhang Li , Feng Ye , Zixuan Wang , Moxuan Zhang

Accounting for the increased concern for public safety, automatic abnormal event detection and recognition in a surveillance scene is crucial. It is a current open study subject because of its intricacy and utility. The identification of…

计算机视觉与模式识别 · 计算机科学 2023-11-27 Anikeit Sethi , Krishanu Saini , Sai Mounika Mididoddi

The vast work in Deep Learning (DL) has led to a leap in image denoising research. Most DL solutions for this task have chosen to put their efforts on the denoiser's architecture while maximizing distortion performance. However, distortion…

计算机视觉与模式识别 · 计算机科学 2024-05-21 Guy Ohayon , Theo Adrai , Gregory Vaksman , Michael Elad , Peyman Milanfar

Class imbalance is a challenging issue in practical classification problems for deep learning models as well as for traditional models. Traditionally successful countermeasures such as synthetic over-sampling have had limited success with…

计算机视觉与模式识别 · 计算机科学 2020-12-10 Kumari Deepshikha , Anugunj Naman

In this paper, we propose a novel method for irregularity detection. Previous researches solve this problem as a One-Class Classification (OCC) task where they train a reference model on all of the available samples. Then, they consider a…

计算机视觉与模式识别 · 计算机科学 2020-06-30 Masoud Pourreza , Bahram Mohammadi , Mostafa Khaki , Samir Bouindour , Hichem Snoussi , Mohammad Sabokrou

Generative adversarial networks (GANs)successfully generate high quality data by learning amapping from a latent vector to the data. Various studies assert that the latent space of a GAN is semanticallymeaningful and can be utilized for…

计算机视觉与模式识别 · 计算机科学 2020-03-06 Duhyeon Bang , Seoungyoon Kang , Hyunjung Shim

Generative Adversarial Networks (GANs) can synthesize realistic images, with the learned latent space shown to encode rich semantic information with various interpretable directions. However, due to the unstructured nature of the learned…

计算机视觉与模式识别 · 计算机科学 2023-10-11 Zikun Chen , Han Zhao , Parham Aarabi , Ruowei Jiang