33 citations · 131 across the 9 of their papers we have counts for
10 papers
Approximating matrix functions by block Krylov methods with randomized vectors
Josh Kane, Lucas Onisk, Lothar Reichel +1
The need to evaluate expressions of the form , where is a square matrix, is a function, and is a vector, arises in several areas of applied mat…
The seriation problem in the presence of a double Fiedler value
Anna Concas, Caterina Fenu, Giuseppe Rodriguez +1
Seriation is a problem consisting of seeking the best enumeration order of a set of units whose interrelationship is described by a bipartite graph, that is, a graph whose nodes ar…
Regularized minimal-norm solution of an overdetermined system of first kind integral equations
Patricia Díaz de Alba, Luisa Fermo, Federica Pes +1
Overdetermined systems of first kind integral equations appear in many applications. When the right-hand side is discretized, the resulting finite-data problem is ill-posed and adm…
A doubly relaxed minimal-norm Gauss-Newton method for underdetermined nonlinear least-squares problems
Federica Pes, Giuseppe Rodriguez
When a physical system is modeled by a nonlinear function, the unknown parameters can be estimated by fitting experimental observations by a least-squares approach. Newton's method…
Inversion of multiconfiguration complex EMI data with minimum gradient support regularization: A case study
Gian Piero Deidda, Patricia Diaz de Alba, Giuseppe Rodriguez +1
Frequency-domain electromagnetic instruments allow the collection of data in different configurations, that is, varying the intercoil spacing, the frequency, and the height above t…
FDEMtools: a MATLAB package for FDEM data inversion
Gian Piero Deidda, Patricia Díaz de Alba, Caterina Fenu +2
Electromagnetic induction surveys are among the most popular techniques for non-destructive investigation of soil properties in order to detect the presence of either ground inhomo…
PQSER: A Matlab package for spectral seriation
Anna Concas, Caterina Fenu, Giuseppe Rodriguez
The seriation problem is an important ordering issue which consists of finding the best ordering of a set of units whose interrelationship is defined by a bipartite graph. It has i…
Regularized solution of a nonlinear problem in electromagnetic sounding
Gian Piero Deidda, Caterina Fenu, Giuseppe Rodriguez
We propose a regularization method to solve a nonlinear ill-posed problem connected to inversion of data gathered by a ground conductivity meter.
A fast solver for linear systems with displacement structure
Antonio Arico', Giuseppe Rodriguez
We describe a fast solver for linear systems with reconstructable Cauchy-like structure, which requires O(rn^2) floating point operations and O(rn) memory locations, where n is the…
smt: a Matlab structured matrices toolbox
Michela Redivo-Zaglia, Giuseppe Rodriguez
We introduce the smt toolbox for Matlab. It implements optimized storage and fast arithmetics for circulant and Toeplitz matrices, and is intended to be transparent to the user and…