| 2026 | ECIR | Bribery-Resistant Ranking Systems: A Multipartite User-Agnostic Framework for AI Act Compliance. | Martim Baltazar, Ludovico Boratto, Mirko Marras, Guilherme Ramos |
| 2026 | SIGIR | Temporal User-Agnostic Ranking: Detecting Preference Evolution while Preserving Ethical Principles. | Guilherme Ramos, Ludovico Boratto, Mirko Marras |
| 2025 | NCA | Rm: Multivalued Loss-Tolerant Byzantine Consensus for Mobile Ad-Hoc Networks. | Joo Pedro, Guilherme Ramos, David R. Matos |
| 2025 | SIGIR | Private Preferences, Public Rankings: A Privacy-Preserving Framework for Marketplace Recommendations. | Guilherme Ramos, Ludovico Boratto, Mirko Marras |
| 2024 | SIGIR | Towards Ethical Item Ranking: A Paradigm Shift from User-Centric to Item-Centric Approaches. | Guilherme Ramos, Mirko Marras, Ludovico Boratto |
| 2022 | SIGIR | Regulating Group Exposure for Item Providers in Recommendation. | Mirko Marras, Ludovico Boratto, Guilherme Ramos, Gianni Fenu |
| 2021 | CIKM | Evaluating the Prediction Bias Induced by Label Imbalance in Multi-label Classification. | Luca Piras, Ludovico Boratto, Guilherme Ramos |
| 2021 | CIKM | Reputation Equity in Ranking Systems. | Guilherme Ramos, Ludovico Boratto, Mirko Marras |
| 2020 | SIGIR | Reputation (In)dependence in Ranking Systems: Demographics Influence Over Output Disparities. | Guilherme Ramos, Ludovico Boratto |
| 2017 | ICDM | Reputation-Based Ranking Systems and Their Resistance to Bribery. | Joo Sade, Guilherme Ramos, Carlos Caleiro, Soummya Kar |