{"ID":2840867,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2511.12393","arxiv_id":"2511.12393","title":"Learning to Control Misinformation: a Closed-loop Approach for Misinformation Mitigation over Social Networks","abstract":"Modern social networks rely on recommender systems that inadvertently amplify misinformation by prioritizing engagement over content veracity. We present a control framework that mitigates misinformation spread while maintaining user engagement by penalizing content characteristics commonly exploited by false information, specifically, extreme negative sentiment and novelty. We extend the closed-loop Friedkin-Johnsen model to incorporate the mitigation of misinformation together with the maximization of user engagement. Both model-free and model-based control strategies demonstrate up to 76% reduction in misinformation propagation across diverse network configurations, validated through simulations using the LIAR2 dataset with sentiment features extracted via large language models. Analysis of engagement-misinformation trade-offs reveals that in networks with radical users, median engagement improves even as misinformation decreases, suggesting content moderation enhances discourse quality for non-extremist users. The framework provides practical guidance for platform operators in balancing misinformation suppression with engagement objectives.","short_abstract":"Modern social networks rely on recommender systems that inadvertently amplify misinformation by prioritizing engagement over content veracity. We present a control framework that mitigates misinformation spread while maintaining user engagement by penalizing content characteristics commonly exploited by false informati...","url_abs":"https://arxiv.org/abs/2511.12393","url_pdf":"https://arxiv.org/pdf/2511.12393v1","authors":"[\"Nicolo' Pagan\",\"Andreas Philippou\",\"Giulia De Pasquale\"]","published":"2025-11-16T00:00:23Z","proceeding":"cs.SI","tasks":"[\"cs.SI\",\"eess.SY\"]","methods":"[\"Language Model\"]","has_code":false}