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Noise-cleaning the precision matrix of fMRI time series
We observe that the so called Optimal Rotationally Invariant Estimator, based on Random Matrix Theory, leads to a significantly lower distance from the true precision matrix in synthetic data, and higher test likelihood in natural fMRI data.
The Evolution of Competitiveness across Economic, Innovation and Knowledge production activities
The evolution of economic and innovation systems at the national scale is shaped by a complex dynamics, the footprint of which is the nested structure of the activities in which different countries are competitive.
The unbalanced reorganization of weaker functional connections induces the altered brain network topology in schizophrenia
Network neuroscience shed some light on the functional and structural modifications occurring to the brain associated with the phenomenology of schizophrenia.
The Statistical Physics of Real-World Networks
In the last 15 years, statistical physics has been a very successful framework to model complex networks.
Physics and Society Disordered Systems and Neural Networks Statistical Mechanics Information Theory Social and Information Networks Information Theory
Reconstructing topological properties of complex networks using the fitness model
A major problem in the study of complex socioeconomic systems is represented by privacy issues$-$that can put severe limitations on the amount of accessible information, forcing to build models on the basis of incomplete knowledge.
Social and Information Networks Physics and Society General Finance
Bootstrapping topology and systemic risk of complex network using the fitness model
The missing links are generated on the basis of the latter quan- tity according to a fitness model calibrated on the subset of nodes for which links are known.
Physics and Society Social and Information Networks General Finance
