From the 1 of 5 linked papers with an AI index.
5 papers
On the spherical cardioid distribution and its goodness-of-fit
Eduardo GarcÃa-Portugués
The paper investigates the spherical cardioid distribution, a flexible directional model on the sphere, and develops its theoretical properties, estimation methods, and bootstrap g…
On Stein's test of uniformity on the hypersphere
Paul Axmann, Bruno Ebner, Eduardo GarcÃa-Portugués
We propose a new test of uniformity on the hypersphere based on a Stein characterization associated with the Laplace-Beltrami operator. We identify a sufficient class of test funct…
Out-of-bag prediction balls for random forests in metric spaces
Diego Serrano, Eduardo GarcÃa-Portugués
Statistical methods for metric spaces provide a general and versatile framework for analyzing complex data types. We introduce a novel approach for constructing confidence regions…
Blessing of dimensionality in cross-validated bandwidth selection on the sphere
José E. Chacón, Eduardo GarcÃa-Portugués, Andrea Meilán-Vila
We study the asymptotic behavior of least-squares cross-validation bandwidth selection in kernel density estimation on the -dimensional hypersphere, . We show that the…
Density estimation for compositional data using nonparametric mixtures
Jiajin Xie, Yong Wang, Eduardo GarcÃa-Portugués
Compositional data, representing proportions constrained to the simplex, arise in diverse fields such as geosciences, ecology, genomics, and microbiome research. Existing nonparame…