14 citations · 30 across the 6 of their papers we have counts for
7 papers
A two-phase rank-based algorithm for low-rank matrix completion
Tacildo de Souza Araújo, Douglas S. Gonçalves, Cristiano Torezzan
Matrix completion aims to recover an unknown low-rank matrix from a small subset of its entries. In many applications, the rank of the unknown target matrix is known in advance. In…
A novel low-rank matrix completion approach to estimate missing entries in Euclidean distance matrices
Nilson Moreira, Leonardo Duarte, Carlile Lavor +1
A Euclidean Distance Matrix (EDM) is a table of distance-square between points on a k- dimensional Euclidean space, with applications in many fields (e.g. engineering, geodesy, eco…
A heuristic approach for designing cyclic group codes
João E. Strapasson, Cristiano Torezzan
In this paper we propose a heuristic technique for distributing points on the surface of a unit n-dimensional Euclidean sphere, generated as the orbit of a finite cyclic subgroup o…
Curves on Flat Tori and Analog Source-Channel Codes
Antonio Campello, Cristiano Torezzan, Sueli I. R. Costa
In this paper we consider the problem of transmitting a continuous alphabet discrete-time source over an AWGN channel. We propose a constructive scheme based on a set of curves on…
Constructive spherical codes on layers of flat tori
Cristiano Torezzan, Sueli I. R. Costa, Vinay A. Vaishampayan
A new class of spherical codes is constructed by selecting a finite subset of flat tori from a foliation of the unit sphere S^{2L-1} of R^{2L} and designing a structured codebook o…
Optimum Commutative Group Codes
Cristiano Torezzan, João E. Strapasson, Sueli I. R. Costa +1
A method for finding an optimum -dimensional commutative group code of a given order is presented. The approach explores the structure of lattices related to these codes and…
Curves on torus layers and coding for continuous alphabet sources
Antonio Campello, Cristiano Torezzan, Sueli I. R. Costa
In this paper we consider the problem of transmitting a continuous alphabet discrete-time source over an AWGN channel. The design of good curves for this purpose relies on geometri…