Zobrazeno 1 - 10
of 388
pro vyhledávání: '"Fontana, Roberto"'
Autor:
Fontana, Roberto, Guerra, Marco
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, we associate to any binary OA a persistence diagram, one of the main
Externí odkaz:
http://arxiv.org/abs/2409.20077
We study the problem of transforming a multi-way contingency table into an equivalent table with uniform margins and same dependence structure. Such a problem relates to recent developments in copula modeling for discrete random vectors. Here, we foc
Externí odkaz:
http://arxiv.org/abs/2404.04343
Autor:
Fontana, Roberto, Semeraro, Patrizia
Model risk measures consequences of choosing a model in a class of possible alternatives. We find analytical and simulated bounds for payoff functions on classes of plausible alternatives of a given discrete model. We measure the impact of choosing a
Externí odkaz:
http://arxiv.org/abs/2302.08838
Autor:
Fontana, Roberto, Rapallo, Fabio
The paper describes an algorithm that, given an initial design $\mathcal{F}_n$ of size $n$ and a linear model with $p$ parameters, provides a sequence $\mathcal{F}_n \supset \ldots \supset \mathcal{F}_{n-k} \supset \ldots \supset \mathcal{F}_p$ of ne
Externí odkaz:
http://arxiv.org/abs/2206.10521
Autor:
Fontana, Roberto, Semeraro, Patrizia
The main contribution of this paper is to find a representation of the class $\mathcal{F}_d(p)$ of multivariate Bernoulli distributions with the same mean $p$ that allows us to find its generators analytically in any dimension. We map $\mathcal{F}_d(
Externí odkaz:
http://arxiv.org/abs/2205.12744
Autor:
Arrieta, Jose Pablo1 (AUTHOR) j.p.arrieta@uva.nl, Fontana, Roberto2,3 (AUTHOR) roberto.fontana@unipv.it, Brusoni, Stefano4 (AUTHOR) sbrusoni@ethz.ch
Publikováno v:
Industrial & Corporate Change. Feb2023, Vol. 32 Issue 1, p155-180. 26p. 2 Diagrams, 5 Charts, 3 Graphs.
This paper continues the application of circuit theory to experimental design started by the first two authors. The theory gives a very special and detailed representation of the kernel of the design model matrix. This representation turns out to be
Externí odkaz:
http://arxiv.org/abs/2106.11213
Autor:
Cattani, Gino1 (AUTHOR) gc59@stern.nyu.edu, Fontana, Roberto2 (AUTHOR) roberto.fontana@unipv.it, Malerba, Franco3 (AUTHOR) franco.malerba@unibocconi.it
Publikováno v:
Industrial & Corporate Change. Feb2024, Vol. 33 Issue 1, p1-7. 7p.
Autor:
Cattani, Gino1 (AUTHOR) gc59@stern.nyu.edu, Fontana, Roberto2 (AUTHOR) roberto.fontana@unipv.it, Malerba, Franco3 (AUTHOR) franco.malerba@unibocconi.it
Publikováno v:
Industrial & Corporate Change. Feb2024, Vol. 33 Issue 1, p8-39. 32p.
Autor:
Fontana, Roberto, Semeraro, Patrizia
We explore the class of exchangeable Bernoulli distributions building on their geometrical structure. Exchangeable Bernoulli probability mass functions are points in a convex polytope and we have found analytical expressions for their extremal genera
Externí odkaz:
http://arxiv.org/abs/2101.07693