Now showing items 1-10 of 1371
Testing equality between several populations covariance operators
(Springer Heidelberg, 2018-08)
In many situations, when dealing with several populations, equality of the covariance operators is assumed. An important issue is to study whether this assumption holds before making other inferences. In this paper, we ...
Using spatial covariance function for antitrust market delineation
(Sociedade Brasileira de Econometria, 2009-05-01)
In this paper, an estimation of a Spatial Covariance Function was proposed for determining the relevant geographic market for a merger. This methodology was applied to a proposed merger between two competing Brazilian ...
A bivariate generalized exponential distribution derived from copula functions in the presence of censored data and covariates
In this paper, we introduce a Bayesian analysis for a bivariate generalized exponential distribution in the presence of censored data and covariates derived from Copula functions. The generalized exponential distribution ...
Covariance analysis of sugarcane variety experiments (Saccharum spp.) in contrasting environments
(MODELLING & SIMULATION SOC AUSTRALIA & NEW ZEALAND INC, 2015)
Robust minimum information loss estimation
(Elsevier Science, 2013-09)
Two robust estimators of a matrix-valued location parameter are introduced and discussed. Each is the average of the members of a subsample–typically of covariance or cross-spectrum matrices–with the subsample chosen to ...
The Poisson-exponential lifetime distribution
In this paper we proposed a new two-parameters lifetime distribution with increasing failure rate. The new distribution arises on a latent complementary risk problem base. The properties of the proposed distribution are ...
Minimizing inter-genotypic competition effects to predict genetic values and selection in forestry genetic tests
(Universidade de São Paulo (USP), Escola Superior de Agricultura Luiz de Queiroz (ESALQ), 2011-12-01)
The effect of competition is an important source of variation in breeding experiments. This study aimed to compare the selection of plants of open-pollinated families of Eucalyptus with and without the use of competition ...
Spike-triggered covariance: geometric proof, symmetry properties, and extension beyond Gaussian stimuli
The space of sensory stimuli is complex and high-dimensional. Yet, single neurons in sensory systems are typically affected by only a small subset of the vast space of all possible stimuli. A proper understanding of the ...