Publications
Working papers
Alamichel, Gaffi, Rigon & Durante. Enriched stochastic block models.
Ghidini, Franzolini, Gaffi & Durante. Bayesian stochastic block models for exchangeable multiplex networks.
Franzolini & Gaffi. Scalable and exact hybrid sampling for hierarchical Dirichlet process-based models.
Gaffi, Franzolini, Josephs & Lin. Dependent random partitions for data integration in networks.
Franzolini & Gaffi. An invariance-based approach to node clustering in dynamic networks.
Gaffi, Lijoi & Prünster. Transition probabilities of continual Young diagrams and Dirichlet random means.
Preprints
Gaffi, Josephs & Lin. (2026)
Exchangeable random permutations with an application to Bayesian graph matching.
[arxiv] [code]Franzolini & Gaffi. (2026)
Complexity bounds for Dirichlet process slice samplers.
[arxiv] [code]
Journal papers
Durante, Gaffi, Lijoi & Prünster (2025)
Partially exchangeable stochastic block models for (node-colored) multilayer networks.
Journal of the American Statistical Association - Theory and Methods.
[arxiv] [code] [award] [press]Gaffi, Lijoi & Prünster (2025)
Random probability measures with fixed mean distributions.
Annals of Applied Probability.
Conference proceedings
Gaffi (2026)
Conditionally partially exchangeable partitions for dynamic networks.
In New Trends in Bayesian Statistics (BaYSM2023), Springer Proceedings in Mathematics and Statistics.Gaffi (2025)
Modeling multiple node-colored networks with partial exchangeability.
In Statistics for Innovation (SIS2025), Italian Statistical Society Series on Advances in Statistics, Springer.Gaffi, Lijoi & Prünster (2022)
Specification of the base measure of nonparametric priors via random means.
In New Frontiers in Bayesian Statistics (BaYSM2021), Springer Proceedings in Mathematics and Statistics.
Discussions
- Catalano & Gaffi (2025)
Contributed discussion on “A tree perspective on stick-breaking models in covariate-dependent mixtures” by Horiguchi, Chan & Ma.
Bayesian Analysis.
Editorial work
I serve as a reviewer for:
Bayesian Analysis
Electronic Journal of Statistics
Journal of Econometrics
Journal of the American Statistical Association
Statistics and Probability Letters
Stochastic Process and their Applications
I was a committee member for the 2024 and 2026 ASA-SBSS Student Paper Award.
Scientific societies
I am a member of the International Society for Bayesian Analysis (ISBA), the Bayesian nonparamterics section of ISBA (BNP-ISBA), the junior section of ISBA (j-ISBA), the Institute of Mathematical Statistics (IMS), and the Italian Statistical Society (SIS).
In 2026, I serve as Chair-Elect of j-ISBA.