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Generative adversarial networks (GANs) are innovative techniques for learning generative models of complex data distributions from samples. Despite remarkable recent improvements in generating realistic images, one of their major…

Machine Learning · Computer Science 2018-11-05 Zinan Lin , Ashish Khetan , Giulia Fanti , Sewoong Oh

The high growth of Online Social Networks (OSNs) over the last few years has allowed automated accounts, known as social bots, to gain ground. As highlighted by other researchers, most of these bots have malicious purposes and tend to mimic…

Social and Information Networks · Computer Science 2022-06-01 George Dialektakis , Ilias Dimitriadis , Athena Vakali

One of the most significant challenges in statistical signal processing and machine learning is how to obtain a generative model that can produce samples of large-scale data distribution, such as images and speeches. Generative Adversarial…

Computer Vision and Pattern Recognition · Computer Science 2020-05-28 Pegah Salehi , Abdolah Chalechale , Maryam Taghizadeh

We study two important concepts in adversarial deep learning---adversarial training and generative adversarial network (GAN). Adversarial training is the technique used to improve the robustness of discriminator by combining adversarial…

Machine Learning · Computer Science 2019-04-17 Xuanqing Liu , Cho-Jui Hsieh

Social bots have emerged over the last decade, initially creating a nuisance while more recently used to intimidate journalists, sway electoral events, and aggravate existing social fissures. This social threat has spawned a bot detection…

Social and Information Networks · Computer Science 2020-07-16 David M. Beskow , Kathleen M. Carley

Online Social Networks have revolutionized how we consume and share information, but they have also led to a proliferation of content not always reliable and accurate. One particular type of social accounts is known to promote unreputable…

Social and Information Networks · Computer Science 2023-04-18 Edoardo Di Paolo , Marinella Petrocchi , Angelo Spognardi

Generative adversarial networks (GANs) are able to model the complex highdimensional distributions of real-world data, which suggests they could be effective for anomaly detection. However, few works have explored the use of GANs for the…

Machine Learning · Computer Science 2019-05-03 Houssam Zenati , Chuan Sheng Foo , Bruno Lecouat , Gaurav Manek , Vijay Ramaseshan Chandrasekhar

Generative Adversarial Networks have surprising ability for generating sharp and realistic images, though they are known to suffer from the so-called mode collapse problem. In this paper, we propose a new GAN variant called Mixture Density…

Machine Learning · Computer Science 2018-11-30 Hamid Eghbal-zadeh , Werner Zellinger , Gerhard Widmer

Efficient and reliable social bot classification is crucial for detecting information manipulation on social media. Despite rapid development, state-of-the-art bot detection models still face generalization and scalability challenges, which…

Computers and Society · Computer Science 2020-06-05 Kai-Cheng Yang , Onur Varol , Pik-Mai Hui , Filippo Menczer

In recent years, Generative Adversarial Networks (GANs) have become a hot topic among researchers and engineers that work with deep learning. It has been a ground-breaking technique which can generate new pieces of content of data in a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Parthak Mehta , Sarthak Mishra , Nikhil Chouhan , Neel Pethani , Ishani Saha

This paper proposes a novel approach for predicting the motion of pedestrians interacting with others. It uses a Generative Adversarial Network (GAN) to sample plausible predictions for any agent in the scene. As GANs are very susceptible…

Computer Vision and Pattern Recognition · Computer Science 2019-04-25 Javad Amirian , Jean-Bernard Hayet , Julien Pettre

Generative adversarial networks (GANs) have recently become a popular data augmentation technique used by machine learning practitioners. However, they have been shown to suffer from the so-called mode collapse failure mode, which makes…

Machine Learning · Computer Science 2023-08-29 Denis Liu

Malicious social bots achieve their malicious purposes by spreading misinformation and inciting social public opinion, seriously endangering social security, making their detection a critical concern. Recently, graph-based bot detection…

Social and Information Networks · Computer Science 2024-06-17 Ming Zhou , Dan Zhang , Yuandong Wang , Yangli-ao Geng , Yuxiao Dong , Jie Tang

Bots have been in the spotlight for many social media studies, for they have been observed to be participating in the manipulation of information and opinions on social media. These studies analyzed the activity and influence of bots in a…

Social and Information Networks · Computer Science 2024-04-03 Lynnette Hui Xian Ng , Kathleen M. Carley

Social platforms such as Twitter are under siege from a multitude of fraudulent users. In response, social bot detection tasks have been developed to identify such fake users. Due to the structure of social networks, the majority of methods…

Cryptography and Security · Computer Science 2023-10-12 Lanjun Wang , Xinran Qiao , Yanwei Xie , Weizhi Nie , Yongdong Zhang , Anan Liu

Generative adversarial networks (GANs) while being very versatile in realistic image synthesis, still are sensitive to the input distribution. Given a set of data that has an imbalance in the distribution, the networks are susceptible to…

Computer Vision and Pattern Recognition · Computer Science 2018-02-05 Shashank Sharma , Vinay P. Namboodiri

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…

Machine Learning · Statistics 2018-11-28 Kevin J Liang , Chunyuan Li , Guoyin Wang , Lawrence Carin

Generative adversarial networks (GANs) nowadays are capable of producing images of incredible realism. One concern raised is whether the state-of-the-art GAN's learned distribution still suffers from mode collapse, and what to do if so.…

Machine Learning · Computer Science 2021-07-27 Zhenyu Wu , Zhaowen Wang , Ye Yuan , Jianming Zhang , Zhangyang Wang , Hailin Jin

Training Generative Adversarial Networks (GANs) remains a challenging problem. The discriminator trains the generator by learning the distribution of real/generated data. However, the distribution of generated data changes throughout the…

Computer Vision and Pattern Recognition · Computer Science 2024-01-05 Wentian Zhang , Haozhe Liu , Bing Li , Jinheng Xie , Yawen Huang , Yuexiang Li , Yefeng Zheng , Bernard Ghanem

Although not all bots are malicious, the vast majority of them are responsible for spreading misinformation and manipulating the public opinion about several issues, i.e., elections and many more. Therefore, the early detection of bots is…

Computation and Language · Computer Science 2024-07-31 Loukas Ilias , Ioannis Michail Kazelidis , Dimitris Askounis