Search Results for author: Sebastiano Stramaglia

Found 8 papers, 5 papers with code

Higher-order mutual information reveals synergistic sub-networks for multi-neuron importance

no code implementations1 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.

Representation Learning

Pairwise and high-order dependencies in the cryptocurrency trading network

no code implementations8 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.

Vocal Bursts Intensity Prediction

Local Granger Causality

no code implementations26 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.

Gaussian Processes

Quantifying dynamical high-order interdependencies from the O-information: an application to neural spiking dynamics

1 code implementation31 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.

Synergy as a warning sign of transitions: the case of the two-dimensional Ising model

1 code implementation16 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

Multiscale Granger causality analysis by à trous wavelet transform

1 code implementation12 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.

EEG

Kernel Granger causality and the analysis of dynamical networks

1 code implementation20 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

Kernel method for nonlinear Granger causality

1 code implementation16 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

Cannot find the paper you are looking for? You can Submit a new open access paper.