33 citations · 37 across the 4 of their papers we have counts for
6 papers
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…
Identifying the lights position in photometric stereo under unknown lighting
A. Concas, R. Dessì, C. Fenu +2
Reconstructing the 3D shape of an object from a set of images is a classical problem in Computer Vision. Photometric stereo is one of the possible approaches. It stands on the assu…
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…
Computation of generalized matrix functions
Francesca Arrigo, Michele Benzi, Caterina Fenu
We develop numerical algorithms for the efficient evaluation of quantities associated with generalized matrix functions [J. B. Hawkins and A. Ben-Israel, Linear and Multilinear Alg…
Block Matrix Formulations for Evolving Networks
Caterina Fenu, Desmond J. Higham
Many types of pairwise interaction take the form of a fixed set of nodes with edges that appear and disappear over time. In the case of discrete-time evolution, the resulting evolv…
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.