Working papers

1. Pigini, C., Pionati, A., & Valentini, F. (2025). Grouped fixed effects regularization for binary choice models. arXiv preprint arXiv:2502.06446.

2. Brusa, L., Pennoni, F., Bartolucci, F., Peruilh Bagolini, R. (2025). Dealing with separation problem in hidden Markov models with covariates based on a penalized maximum likelihood approach. arXiv preprint arXiv:2507.02425.