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Reward Feedback Learning (ReFL) has recently shown great potential in aligning model outputs with human preferences across various generative tasks. In this work, we introduce a ReFL framework, named DiffusionReward, to the Blind Face…

Computer Vision and Pattern Recognition · Computer Science 2025-05-26 Bin Wu , Wei Wang , Yahui Liu , Zixiang Li , Yao Zhao

Diffusion, a fundamental internal mechanism emerging in many physical processes, describes the interaction among different objects. In many learning tasks with limited training samples, the diffusion connects the labeled and unlabeled data…

Machine Learning · Computer Science 2023-05-02 Tangjun Wang , Zehao Dou , Chenglong Bao , Zuoqiang Shi

Fake news can have a significant negative impact on society because of the growing use of mobile devices and the worldwide increase in Internet access. It is therefore essential to develop a simple mathematical model to understand the…

Social and Information Networks · Computer Science 2021-04-28 Taichi Murayama , Shoko Wakamiya , Eiji Aramaki , Ryota Kobayashi

With the rise of social media, rumor detection has drawn increasing attention. Although numerous methods have been proposed with the development of rumor classification datasets, they focus on identifying whether a post is a rumor, lacking…

Computers and Society · Computer Science 2025-08-18 Bin Ma , Yifei Zhang , Yongjin Xian , Qi Li , Linna Zhou , Gongxun Miao

Rumor propagation modeling is critical for understanding and mitigating misinformation. Existing approaches combining rule-based regular agents with LLM-driven core agents provide a promising paradigm for large-scale rumor simulation.…

Social and Information Networks · Computer Science 2026-01-12 Yijun Liu , Wu Liu , Xiaoyan Gu , Hantao Yao , Weiping Wang , Jiebo Luo , Yongdong Zhang

The recommendation methods based on network diffusion have been shown to perform well in both recommendation accuracy and diversity. Nowdays, numerous extensions have been made to further improve the performance of such methods. However, to…

Physics and Society · Physics 2019-08-13 Peng Zhang , Leyang Xue , An Zeng

Social networks offer a ready channel for fake and misleading news to spread and exert influence. This paper examines the performance of different reputation algorithms when applied to a large and statistically significant portion of the…

Social and Information Networks · Computer Science 2018-03-07 Luca de Alfaro , Massimo Di Pierro , Rakshit Agrawal , Eugenio Tacchini , Gabriele Ballarin , Marco L. Della Vedova , Stefano Moret

Diffusion models have recently revolutionized the field of image synthesis due to their ability to generate photorealistic images. However, one of the major drawbacks of diffusion models is that the image generation process is costly. A…

Information diffusion and virus propagation are fundamental processes taking place in networks. While it is often possible to directly observe when nodes become infected with a virus or adopt the information, observing individual…

Data Structures and Algorithms · Computer Science 2015-03-17 Manuel Gomez-Rodriguez , Jure Leskovec , Andreas Krause

Social media misinformation harms individuals and societies and is potentialized by fast-growing multi-modal content (i.e., texts and images), which accounts for higher "credibility" than text-only news pieces. Although existing supervised…

Artificial Intelligence · Computer Science 2023-11-27 Hui Liu , Wenya Wang , Hao Sun , Anderson Rocha , Haoliang Li

We derive the mean-field equations characterizing the dynamics of a rumor process that takes place on top of complex heterogeneous networks. These equations are solved numerically by means of a stochastic approach. First, we present…

Statistical Mechanics · Physics 2009-11-10 Yamir Moreno , Maziar Nekovee , Amalio. F. Pacheco

Recommender systems have shown great potential to address information overload problem, namely to help users in finding interesting and relevant objects within a huge information space. Some physical dynamics, including heat conduction…

Data Analysis, Statistics and Probability · Physics 2011-07-04 Linyuan Lu , Weiping Liu

With the development of social media networks, rumor detection models have attracted more and more attention. Whereas, these models primarily focus on classifying contexts as rumors or not, lacking the capability to locate and mark specific…

Social and Information Networks · Computer Science 2025-08-19 Bin Ma , Yifei Zhang , Yongjin Xian , Qi Li , Linna Zhou , Gongxun Miao

In this paper, we delve into the rapidly evolving challenge of misinformation detection, with a specific focus on the nuanced manipulation of narrative frames - an under-explored area within the AI community. The potential for Generative AI…

Computation and Language · Computer Science 2024-02-27 Guan Wang , Rebecca Frederick , Jinglong Duan , William Wong , Verica Rupar , Weihua Li , Quan Bai

Online Social Media (OSM) platforms such as Twitter, Facebook are extensively exploited by the users of these platforms for spreading the (mis)information to a large audience effortlessly at a rapid pace. It has been observed that the…

Artificial Intelligence · Computer Science 2021-07-07 Shakshi Sharma , Rajesh Sharma

Social Networks' omnipresence and ease of use has revolutionized the generation and distribution of information in today's world. However, easy access to information does not equal an increased level of public knowledge. Unlike traditional…

Social and Information Networks · Computer Science 2021-05-25 Tanveer Khan , Antonis Michalas , Adnan Akhunzada

Diffusion-based models have achieved notable empirical successes in reinforcement learning (RL) due to their expressiveness in modeling complex distributions. Despite existing methods being promising, the key challenge of extending existing…

Machine Learning · Computer Science 2024-11-04 Dmitry Shribak , Chen-Xiao Gao , Yitong Li , Chenjun Xiao , Bo Dai

Image deblurring is an essential image preprocessing technique, aiming to recover clear and detailed images form blurry ones. However, existing algorithms often fail to effectively integrate multi-scale feature extraction with frequency…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Yawen Xiang , Heng Zhou , Chengyang Li , Zhongbo Li , Yongqiang Xie

In the era of the rapid development of the Internet, the threshold for information spreading has become lower. Most of the time, rumors, as a special kind of information, are harmful to society. And once the rumor appears, the truth will…

Social and Information Networks · Computer Science 2021-01-27 Yan Wang , Feng Qing , Jian-Ping Chai , Ye-Peng Ni

The performance of single image super-resolution depends heavily on how to generate and complement high-frequency details to low-resolution images. Recently, diffusion-based DDPM models exhibit great potential in generating high-quality…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Xingjian Wang , Li Chai , Jiming Chen