no code implementations • 1 Nov 2022 • Kenzo Clauw, Sebastiano Stramaglia, Daniele Marinazzo
Quantifying which neurons are important with respect to the classification decision of a trained neural network is essential for understanding their inner workings.
no code implementations • 8 Jul 2022 • Tomas Scagliarini, Giuseppe Pappalardo, Alessio Emanuele Biondo, Alessandro Pluchino, Andrea Rapisarda, Sebastiano Stramaglia
We first define a cryptocurrency trading network, i. e. the network made using cryptocurrencies as nodes and the Granger causality among their weekly log returns as links, later we analyse its evolution over time.
no code implementations • 26 Oct 2020 • Sebastiano Stramaglia, Tomas Scagliarini, Yuri Antonacci, Luca Faes
Granger causality is a statistical notion of causal influence based on prediction via vector autoregression.
1 code implementation • 31 Jul 2020 • Sebastiano Stramaglia, Tomas Scagliarini, Bryan C. Daniels, Daniele Marinazzo
We address the problem of efficiently and informatively quantifying how multiplets of variables carry information about the future of the dynamical system they belong to.
1 code implementation • 16 Jan 2019 • Daniele Marinazzo, Leonardo Angelini, Mario Pellicoro, Sebastiano Stramaglia
We consider the formalism of information decomposition of target effects from multi-source interactions, i. e. the problem of defining unique, redundant (or shared), and synergistic (or complementary) components of the information that a set of source variables provides about a target, and apply it to the two-dimensional Ising model as a paradigm of a critically transitioning system.
Statistical Mechanics
1 code implementation • 12 Jul 2017 • Sebastiano Stramaglia, Iege Bassez, Luca Faes, Daniele Marinazzo
Since interactions in neural systems occur across multiple temporal scales, it is likely that information flow will exhibit a multiscale structure, thus requiring a multiscale generalization of classical temporal precedence causality analysis like Granger's approach.
1 code implementation • 20 Mar 2008 • Daniele Marinazzo, Mario Pellicoro, Sebastiano Stramaglia
We apply the proposed approach to a network of chaotic maps and to a simulated genetic regulatory network: it is shown that the underlying topology of the network can be reconstructed from time series of node's dynamics, provided that a sufficient number of samples is available.
Disordered Systems and Neural Networks Exactly Solvable and Integrable Systems Quantitative Methods
1 code implementation • 16 Nov 2007 • Daniele Marinazzo, Mario Pellicoro, Sebastiano Stramaglia
Important information on the structure of complex systems, consisting of more than one component, can be obtained by measuring to which extent the individual components exchange information among each other.
Disordered Systems and Neural Networks Exactly Solvable and Integrable Systems