García Mollá, Víctor Manuel; Liberos Mascarell, Alejandro; Vidal Maciá, Antonio Manuel; Guillem Sánchez, María Salud; Millet Roig, José; González Salvador, Alberto; Martínez Zaldívar, Francisco José; Climent, Andreu M.(Elsevier, 2014-02)
In this paper we studied the implementation and performance of adaptive step methods for large
systems of ordinary differential equations systems in graphics processing units, focusing on the
simulation of three-dimensional ...
[EN] This paper presents an implementation of one of the most up-to-day algorithms proposed to compute the matrix trigonometric functions sine and cosine. The method used is based on Taylor series approximations which ...
[EN] Internet of Things (IoT) is becoming a new socioeconomic revolution in which data and immediacy are the main ingredients. IoT generates large datasets on a daily basis but it is currently considered as "dark data", ...
Cebrian, Juan M.; Imbernón, Baldomero; Soto, Jesús; Cecilia-Canales, José María(MDPI AG, 2021-09)
[EN] Clustering algorithms are one of the most widely used kernels to generate knowledge from large datasets. These algorithms group a set of data elements (i.e., images, points, patterns, etc.) into clusters to identify ...
[EN] In this work we introduce a new method to compute the matrix cosine. It is based on recent new matrix polynomial evaluation methods for the Taylor approximation and a mixed forward and backward error analysis. The ...
Lamas Daviña, Alejandro; Román Moltó, José Enrique(Springer, 2016-04-02)
In an eigenvalue problem defined by one or two matrices with block-tridiagonal structure, if only a few eigenpairs are required it is interesting to consider iterative methods based on Krylov subspaces, even if matrix ...
López-Gómez, David; de Blas-Moncalvillo, Miguel; Cuéllar-Moro, Vicente(Universitat Politècnica de València, 2024-01-31)
[EN] Marmolejo Reservoir sedimentation increases the flooding risk in Andújar village, located at the reservoir tail. The Spanish Hydraulic Administration has designed a set of protection measures whose effectiveness is ...
Lamas Daviña, Alejandro; Roman, Jose E.(Elsevier, 2018)
[EN] We consider the computation of a few eigenpairs of a generalized eigenvalue problem Ax = lambda Bx with block-tridiagonal matrices, not necessarily symmetric, in the context of Krylov methods. In this kind of computation, ...
Defez Candel, Emilio; Ibáñez González, Jacinto Javier; Peinado Pinilla, Jesús; Alonso-Jordá, Pedro; Alonso Abalos, José Miguel(Elsevier, 2022-07)
[EN] There are, currently, very few implementations to compute the hyperbolic cosine of a matrix. This work tries to fill this gap. To this end, we first introduce both a new rational-polynomial Hermite matrix expansion ...
Defez Candel, Emilio; Ibáñez González, Jacinto Javier; Alonso-Jordá, Pedro; Alonso Abalos, José Miguel; Peinado Pinilla, Jesús(Elsevier, 2022-04)
[EN] We present in this paper a new method based on Bernoulli matrix polynomials to approximate the exponential of a matrix. The developed method has given rise to two new algorithms whose efficiency and precision are ...
García Mollá, Víctor Manuel; Alonso-Jordá, Pedro(Springer-Verlag, 2023-01)
[EN] Border tracking in binary images is an important operation in many computer vision applications. The problem consists in finding borders in a 2D binary image (where all of the pixels are either 0 or 1). There are ...
García Mollá, Víctor Manuel; Alonso-Jordá, Pedro; García-Laguía, Ricardo(Springer-Verlag, 2020-01-19)
[EN] Border tracking in binary images is an important kernel for many applications. There are very efficient sequential algorithms, most notably, the algorithm proposed by Suzuki et al., which has been implemented for CPUs ...
García Mollá, Víctor Manuel; Salazar Afanador, Addisson; Safont Armero, Gonzalo; Vidal, Antonio M.; Vergara Domínguez, Luís(Springer, 2019-06-14)
In this paper, we present the optimization and parallelization of a state-of-the-art algorithm for automatic classification, in order to perform real-time classification of clinical data. The parallelization has been carried ...