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- Sapienza University of RomeIT137 papers
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10 papers · 1 filter
Why you should also use OLS estimation of tail exponents
Thiago Trafane Oliveira Santos, Daniel Oliveira Cajueiro
Even though practitioners often estimate Pareto exponents running OLS rank-size regressions, the usual recommendation is to use the Hill MLE with a small-sample correction instead,…
Zipf's law in the distribution of Brazilian firm size
Thiago Trafane Oliveira Santos, Daniel Oliveira Cajueiro
Zipf's law states that the probability of a variable being larger than is roughly inversely proportional to . In this paper, we evaluate Zipf's law for the distribution of f…
Thermal treatment effects on PMN-0.4PT/Fe multiferroic heterostructures
Deepak Dagur, Alice Margherita Finardi, Vincent Polewczyk +10
Multiferroic heterostructures have gained in recent years a renewed role in spintronic applications due to their possibility in controlling the magnetic properties via interfacial…
General theory for extended-range percolation on simple and multiplex networks
Lorenzo Cirigliano, Claudio Castellano, Ginestra Bianconi
Extended-range percolation is a robust percolation process that has relevance for quantum communication problems. In extended-range percolation nodes can be trusted or untrusted. U…
Laplacian Renormalization Group: An introduction to heterogeneous coarse-graining
Guido Caldarelli, Andrea Gabrielli, Tommaso Gili +1
The renormalization group (RG) constitutes a fundamental framework in modern theoretical physics. It allows the study of many systems showing states with large-scale correlations a…
Network topology mapping of Chemical Compounds Space
Georgios Tsekenis, Giulio Cimini, Marinos Kalafatis +3
We define bipartite and monopartite relational networks of chemical elements and compounds using two different datasets of inorganic chemical and material compounds, as well as stu…