Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Juan C. Vera"'
Autor:
Rosember Guerra-Urzola, Niek C. de Schipper, Anya Tonne, Klaas Sijtsma, Juan C. Vera, Katrijn Van Deun
Publikováno v:
Advances in Data Analysis and Classification, 17(1), 269-286. Springer Verlag
Sparse PCA methods are used to overcome the difficulty of interpreting the solution obtained from PCA. However, constraining PCA to obtain sparse solutions is an intractable problem, especially in a high-dimensional setting. Penalized methods are use
Autor:
Daniel García-Rivero, Ruth Taylor, Cláudia Umbelino, T Douglas Price, Esteban García-Viñas, Eloísa Bernáldez-Sánchez, Guillem Pérez-Jordà, Leonor Peña-Chocarro, María Barrera-Cruz, Juan F Gibaja-Bao, Manuel J Díaz-Rodríguez, Patricia Monteiro, Juan C Vera-Rodríguez, Javier Pérez-González
Publikováno v:
PLoS ONE, Vol 15, Iss 8, p e0236961 (2020)
There is a significant number of funerary contexts for the Early Neolithic in the Iberian Peninsula, and the body of information is much larger for the Late Neolithic. In contrast, the archaeological information available for the period in between (c
Externí odkaz:
https://doaj.org/article/127a0b746e9b4bf4922d58f59ba2fe5d
Publikováno v:
INFORMS Journal on Computing, 34(1), 656-669. INFORMS Inst.for Operations Res.and the Management Sciences
The maximum k-colorable subgraph (MkCS) problem is to find an induced k-colorable subgraph with maximum cardinality in a given graph. This paper is an in-depth analysis of the MkCS problem that considers various semidefinite programming relaxations,
Autor:
Daniel García Rivero, María Barrera Cruz, Manuel J Diaz Rodriguez, Juan C. Vera Rodriguez, Ruth Taylor
Publikováno v:
SPAL. Revista de Prehistoria y Arqueología de la Universidad de Sevilla. 1:27-91
Este artículo presenta los datos procedentes de un nuevo corte –denominado C006- realizado durante 2017 en Cueva de la Dehesilla. Por vez primera, se excava una de las salas más internas de la cavidad -sala 4-. El área intervenida muestra una se
Publikováno v:
Optimization and Engineering, 22(4), 2779-2799. Springer Netherlands
We present the closed-form solution to the problem of hedging price and quantity risks for energy retailers (ER), using financial instruments based on electricity price and weather indexes. Our model considers an ER who is intermediary in a regulated
Autor:
Elena Makareeva, Guoli Sun, Lynn S Mirigian, Edward L Mertz, Juan C Vera, Nydea A Espinoza, Kathleen Yang, Diana Chen, Teri E Klein, Peter H Byers, Sergey Leikin
Publikováno v:
PLoS ONE, Vol 13, Iss 7, p e0200264 (2018)
OI is a clinically and genetically heterogeneous disorder characterized by bone fragility. More than 90% of patients are heterozygous for mutations in type I collagen genes, COL1A1 and COL1A2, and a common mutation is substitution for an obligatory g
Externí odkaz:
https://doaj.org/article/d37218ba0ebe4c5b8392eb5fa81ef2a8
Publikováno v:
Psychometrika
Psychometrika, 86. Springer
Psychometrika, 86. Springer
PCA is a popular tool for exploring and summarizing multivariate data, especially those consisting of many variables. PCA, however, is often not simple to interpret, as the components are a linear combination of the variables. To address this issue,
Publikováno v:
Electronic Journal of Combinatorics, 28(3):P3.32. Electronic Journal of Combinatorics
This paper considers an infection spreading in a graph; a vertex gets infected if at least two of its neighbors are infected. The P3-hull number is the minimum size of a vertex set that eventually infects the whole graph. In the specific case of the
Autor:
Juan C. Vera, Olga Kuryatnikova
Publikováno v:
Theory of Computing Systems, 64(2), 199-226
We consider the minimum makespan problem for $n$ tasks and two unrelated parallel selfish machines. Let $R_n$ be the best approximation ratio of randomized monotone scale-free algorithms. This class contains the most efficient algorithms known for tr