Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Matrán, Carlos"'
Publikováno v:
Stat Comput 34, 100 (2024)
This work introduces a refinement of the Parsimonious Model for fitting a Gaussian Mixture. The improvement is based on the consideration of clusters of the involved covariance matrices according to a criterion, such as sharing Principal Directions.
Externí odkaz:
http://arxiv.org/abs/2302.11487
Autor:
del Barrio, Eustasio, Inouzhe, Hristo, Loubes, Jean-Michel, Matrán, Carlos, Mayo-Íscar, Agustín
Data obtained from Flow Cytometry present pronounced variability due to biological and technical reasons. Biological variability is a well-known phenomenon produced by measurements on different individuals, with different characteristics such as illn
Externí odkaz:
http://arxiv.org/abs/1907.08006
Classical tests of fit typically reject a model for large enough real data samples. In contrast, often in statistical practice a model offers a good description of the data even though it is not the "true" random generator. We consider a more flexibl
Externí odkaz:
http://arxiv.org/abs/1903.08687
Publikováno v:
Journal of Optimization Theory and Applications 2020
Tests of fit to exact models in statistical analysis often lead to rejections even when the model is a useful approximate description of the random generator of the data. Among possible relaxations of a fixed model, the one defined by contamination n
Externí odkaz:
http://arxiv.org/abs/1903.08573
Univariate concepts as quantile and distribution functions involving ranks and signs, do not canonically extend to $\mathbb{R}^d, d\geq 2$. Palliating that has generated an abundant literature. Chapter 1 shows that, unlike the many definitions that h
Externí odkaz:
http://arxiv.org/abs/1806.01238
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Stochastic ordering among distributions has been considered in a variety of scenarios. Economic studies often involve research about the ordering of investment strategies or social welfare. However, as noted in the literature, stochastic orderings ar
Externí odkaz:
http://arxiv.org/abs/1412.1920
Autor:
del Barrio, Eustasio, Matrán, Carlos
Publikováno v:
Annals of Probability 2013, Vol. 41, No. 5, 3140-3156
We consider the problem of optimal incomplete transportation between the empirical measure on an i.i.d. uniform sample on the d-dimensional unit cube $[0,1]^d$ and the true measure. This is a family of problems lying in between classical optimal tran
Externí odkaz:
http://arxiv.org/abs/1310.0924
Publikováno v:
Bernoulli 2012, Vol. 18, No. 2, 606-634
We say that two probabilities are similar at level $\alpha$ if they are contaminated versions (up to an $\alpha$ fraction) of the same common probability. We show how this model is related to minimal distances between sets of trimmed probabilities. E
Externí odkaz:
http://arxiv.org/abs/1205.1950
Publikováno v:
Annals of Statistics 2008, Vol. 36, No. 5, 2284-2318
Robust estimators of location and dispersion are often used in the elliptical model to obtain an uncontaminated and highly representative subsample by trimming the data outside an ellipsoid based in the associated Mahalanobis distance. Here we analyz
Externí odkaz:
http://arxiv.org/abs/0811.0503