2 papers
stat.AP2025
Negative correlations in Ising models of credit risk
Chiara Emonti, Roberto Fontana
We analyze a subclass of Ising models in the context of credit risk, focusing on Dandelion models when the correlations between the central node and each non-central node are…
stat.CO2024
A topology-based algorithm for the isomorphism check of 2-level Orthogonal Arrays
Roberto Fontana, Marco Guerra
We introduce a construction and an algorithm, both based on Topological Data Analysis (TDA), to tackle the problem of the isomorphism check of Orthogonal Arrays (OAs). Specifically…