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math.ST2026
The Fisher score on the closed simplex
Giovanni Pistone, Fabio Rapallo, Eva Riccomagno
We extend classical analytic tools for finite-state statistical models to allow zero probabilities. Using methods from algebraic statistics and information geometry, we develop a f…
stat.ME2026
Characterization of multi-way binary tables with uniform margins and fixed correlations
Roberto Fontana, Elisa Perrone, Fabio Rapallo
In many applications involving binary variables, only pairwise dependence measures, such as correlations, are available. However, for multi-way tables involving more than two varia…