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Robust estimators under a functional common principal components model
(Elsevier Science, 2017-09)
When dealing with several populations of functional data, equality of the covariance operators is often assumed even when seeking for a lower-dimensional approximation to the data. Usually, if this assumption does not hold, ...
Robust principal components for hyperspectral data analysis
(Springer, 2009-07)
Remote sensing data present peculiar features and characteristics that may make their statistical processing and analysis a difficult task. Among them, it can be mentioned the volume of data involved, the redundancy, the ...
Detecting influential observations in principal components and common principal components
(Elsevier Science, 2010-12)
Detecting outlying observations is an important step in any analysis, even when robust estimates are used. In particular, the robustified Mahalanobis distance is a natural measure of outlyingness if one focuses on ellipsoidal ...
Robust clustering of banks in Argentina
(2014-10)
The purpose of this paper is to classify and characterize 64 banks, active as of 2010 inArgentina, by means of robust techniques used on information gathered during the period 2001-2010. Based on the strategy criteria ...
Is there a Common Path that could have Conditioned the Degree of Welfare State Development in Latin America and the Caribbean?
(Blackwell Publishing Ltd, 2017)
Rethinking the Exploration of Dichotomous Data: Mokken Scale Analysis Versus Factorial Analysis
(Sage, 2020)
The need to determine the correct dimensionality of theoretical constructs and generate valid measurement instruments when underlying items are categorical has generated a significant volume of research in the social ...
Survival of Curtobacterium flaccumfaciens pv. flaccumfaciens in weeds
(2020-09-01)
Weeds are important alternative hosts of pathogens, responsible for the survival and spread of phytopathogenic bacteria. Our study evaluated the potential of weeds as hosts of Curtobacterium flaccumfaciens pv. flaccumfaciens ...
The forward and the equity premium puzzles: two symptoms of the same illness?
(Escola de Pós-Graduação em Economia da FGV, 2006-05-25)
The Forward Premium Puzzle (FPP) is how the empirical observation of a negative relation between future changes in the spot rates and the forward premium is known. Modeling this forward bias as a risk premium and under ...