Abstract This paper analyses the performance of several versions of a block parallel
algorithm in order to apply Neville elimination in a distributed memory parallel computer.
Neville elimination is a procedure to transform ...
The Cosmic Microwave Background (CMB) is a diffuse radiation which is contaminated by the radiation emitted by point sources. The precise knowledge of CMB fluctuations can lead to a better knowledge of the chemistry at the ...
San Juan Sebastián, Pablo; Vidal Maciá, Antonio Manuel; García Mollá, Víctor Manuel; Martínez Zaldívar, Francisco José; Ranilla, J.; Alonso, P.; Alonso-González, M.; Cortina, R.(CMMSE, 2015-07)
[EN] NnmfPack is a numerical library designed to compute efficiently the
Non-Negative Matrix Factorization (NNMF). It has been conceived for
shared memory heterogeneous parallel systems, and it supports, from its
conception, ...
Díaz-Gracia, N.; Cocaña-Fernández, A.; Alonso-González, M:; Martínez Zaldívar, Francisco José; Cortina, Raquel; García Mollá, Víctor Manuel; Alonso, P.; Ranilla, J.; Vidal Maciá, Antonio Manuel(Springer Verlag (Germany), 2015-05)
NnmfPack is a library for the nonnegative matrix factorization (NNMF) problem. Nowadays NNMF is an essential tool in many fields spanning machine learning, data analysis, image analysis or audio source separation, among ...
[EN] This paper shows a study on the consolidation effectiveness of nano-silica and nano-lime-based consolidants (i.e. Nano Estel (R) and Nanorestore (R), respectively), both available on the market, on two stones with ...
[EN] This paper describes several parallel algorithmic variations of the Neville elimination. This elimination solves a system of linear equations making zeros in a matrix column by adding to each row an adequate multiple ...
Abstract
In this work we present a suitable computational tool to deal with large
matrices and solve systems of non-linear equations. This technique is applied to a
very interesting problem: the detection and flux ...
Alonso, P.; García Mollá, Víctor Manuel; Martínez Zaldívar, Francisco José; Salazar Afanador, Addisson; Vergara Domínguez, Luís; Vidal Maciá, Antonio Manuel(Springer Verlag (Germany), 2014-11)
We tackle the parallelization of Non-Negative Matrix Factorization (NNMF), using the Alternating Least Squares and Lee and Seung algorithms, motivated by its use in audio source separation. For the first algorithm, a very ...