16 citations · 48 across the 45 of their papers we have counts for
7 papers · 1 filter
Efficient computation of \lowercase{}-centralities and nonbacktracking centrality for temporal networks
Vanni Noferini, Spyridon Vrontos, Ryan Wood
We discuss efficient computation of -centralities and nonbacktracking centralities for time-evolving networks with nonnegative weights. We present a node-level formula for its c…
Smith forms of matrices in Companion Rings, with group theoretic and topological applications
Vanni Noferini, Gerald Williams
Let be a commutative ring and a monic polynomial. The commutative ring of polynomials in the companion matrix of , where , is…
Para-Hermitian rational matrices
Froilán Dopico, Vanni Noferini, María C. Quintana +1
In this paper we study para-Hermitian rational matrices and the associated structured rational eigenvalue problem (REP). Para-Hermitian rational matrices are square rational matric…
Riemann-Oracle: A general-purpose Riemannian optimizer to solve nearness problems in matrix theory
Miryam Gnazzo, Vanni Noferini, Lauri Nyman +1
We propose an extremely versatile approach to address a large family of matrix nearness problems, possibly with additional linear constraints. Our method is based on splitting a ma…
Rosenbrock's Theorem on System Matrices over Elementary Divisor Domains
Froilán Dopico, Vanni Noferini, Ion Zaballa
Rosenbrock's theorem on polynomial system matrices is a classical result in linear systems theory that relates the Smith-McMillan form of a rational matrix with the Smith forms…
Efficient computation of Katz centrality for very dense networks via negative parameter Katz
Vanni Noferini, Ryan Wood
Katz centrality (and its limiting case, eigenvector centrality) is a frequently used tool to measure the importance of a node in a network, and to rank the nodes accordingly. One r…