no code implementations • 17 Mar 2023 • Daniele Masti, Filippo Fabiani, Giorgio Gnecco, Alberto Bemporad
We propose a counter-example guided inductive synthesis (CEGIS) scheme for the design of control Lyapunov functions and associated state-feedback controllers for linear systems affected by parametric uncertainty with arbitrary shape.
no code implementations • 16 Mar 2022 • Rodolfo Metulini, Giorgio Gnecco, Francesco Biancalani, Massimo Riccaboni
World Input-Output (I/O) matrices provide the networks of within- and cross-country economic relations.
no code implementations • 4 Apr 2021 • Giorgio Gnecco, Andrea Bacigalupo, Francesca Fantoni, Daniela Selvi
In this framework, the present article describes the application of a related unsupervised machine learning technique, namely, principal component analysis, to approximate the gradient of the objective function of a band gap optimization problem for an acoustic metamaterial, with the aim of making the successive application of a gradient-based iterative optimization algorithm faster.
no code implementations • 4 Apr 2021 • Giorgio Gnecco, Andrea Bacigalupo
In this short paper, a matrix perturbation bound on the eigenvalues found by principal component analysis is investigated, for the case in which the data matrix on which principal component analysis is performed is a convex combination of two data matrices.
no code implementations • 28 Aug 2019 • Andrea Bacigalupo, Giorgio Gnecco, Marco Lepidi, Luigi Gambarotta
Specifically, the feasibility and effectiveness of Radial Basis Function networks and Quasi-Monte Carlo methods for the interpolation of the objective functions of such optimization problems are discussed, and their numerical application to a specific acoustic metamaterial with tetrachiral microstructure is presented.
1 code implementation • 29 May 2019 • Falco J. Bargagli-Stoffi, Kristof De-Witte, Giorgio Gnecco
This paper introduces an innovative Bayesian machine learning algorithm to draw interpretable inference on heterogeneous causal effects in the presence of imperfect compliance (e. g., under an irregular assignment mechanism).
no code implementations • 13 Aug 2018 • Falco J. Bargagli-Stoffi, Giorgio Gnecco
This paper provides a link between causal inference and machine learning techniques - specifically, Classification and Regression Trees (CART) - in observational studies where the receipt of the treatment is not randomized, but the assignment to the treatment can be assumed to be randomized (irregular assignment mechanism).
no code implementations • 27 Jun 2016 • Giorgio Gnecco
A particularly interesting instance of supervised learning with kernels is when each training example is associated with two objects, as in pairwise classification (Brunner et al., 2012), and in supervised learning of preference relations (Herbrich et al., 1998).