Publications

Research Quests & Scholarly Adventures

2026

FoodNexus: Massive Food Knowledge for Recommender Systems.
L. Boratto, G. Fenu, M. Marras, G. Medda, G. Zedda.
Advances in Information Retrieval - 48th European Conference on IR Research ECIR 2026
✓ Accepted

2025

✦ Featured Research
Project Code DOI

GreenFoodLens: Sustainability Labels for Food Recommendation

G. Balloccu, L. Boratto, G. Fenu, M. Marras, G. Medda, C. Musto
19th ACM Conference on Recommender Systems (RecSys 2025)
✦ Featured Research
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How Fair is Your Diffusion Recommender Model?

D. Malitesta, G. Medda, E. Purificato, M. Marras, F. Malliaros, L. Boratto
19th ACM Conference on Recommender Systems (RecSys 2025)
✦ Featured Research
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Small Data, Big Impact: POI Recommendation for Individuals with Autism

L. Boratto, F. Cena, M. Marras, N. Mauro, G. Medda
48th ACM SIGIR Conference (SIGIR 2025)

2024

✦ Featured Research
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GNNUERS: Fairness Explanation in GNNs for Recommendation via Counterfactual Reasoning

L. Boratto, F. Fabbri, G. Fenu, M. Marras, G. Medda
ACM Transactions on Intelligent Systems and Technology (TIST)
✦ Featured Research
Project Code PDF

Unlocking LLMs: Addressing Scarce Data and Bias in Mental Health

V. Kumar, E. Ntoutsi, P. S. Rajwat, G. Medda, D. R. Recupero
International Conference on NLP & AI for Cyber Security (NLPaICS 2024)
✦ Featured Research
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Fair Augmentation for Graph Collaborative Filtering

L. Boratto, F. Fabbri, G. Fenu, M. Marras, G. Medda
18th ACM Conference on Recommender Systems (RecSys 2024)
✦ Featured Research
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Robustness in Fairness against Edge-level Perturbations

L. Boratto, F. Fabbri, G. Fenu, M. Marras, G. Medda
46th European Conference on IR Research (ECIR 2024)

2023

✦ Featured Research
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Counterfactual Graph Augmentation for Consumer Unfairness Mitigation

L. Boratto, F. Fabbri, G. Fenu, M. Marras, G. Medda
32nd ACM International Conference on Information and Knowledge Management (CIKM 2023)
✦ Featured Research
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Causal Reasoning for Algorithmic Fairness in Voice Controlled Systems

G. Fenu, M. Marras, G. Medda, G. Meloni
Pattern Recognition Letters (PRLetters 2023)
✦ Featured Research
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How Do You Feel? Information Retrieval in Psychotherapy and Fair Ranking Assessment

V. Kumar†, G. Medda†, D. Reforgiato Recupero, D. Riboni, R. Helaoui, G. Fenu
Workshop on Algorithmic Bias in Search and Recommendation (Bias@ECIR 2023)
✦ Featured Research
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Practical Perspectives of Consumer Fairness in Recommendation

L. Boratto, G. Fenu, M. Marras, G. Medda
Information Processing & Management (IPM 2023)

2022

✦ Featured Research
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Consumer Fairness in Recommender Systems: Contextualizing Definitions and Mitigations

L. Boratto, G. Fenu, M. Marras, G. Medda
46th European Conference on IR Research (ECIR 2022)

2021

✦ Featured Research
Project DOI

Fair Voice Biometrics: Impact of Demographic Imbalance on Group Fairness in Speaker Recognition

G. Fenu, M. Marras, G. Medda, G. Meloni
Interspeech 2021 (Interspeech 2021)

2020

✦ Featured Research
Project DOI

Improving Fairness in Speaker Recognition

G. Fenu, M. Marras, G. Medda, G. Meloni
European Symposium on Software Engineering (ESSE 2020)