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This paper defines a decomposition of technical efficiency for a series of nonparametric deterministic reference … efficiency decomposition are illustrated with several data sets and contrasted with results based on the traditional, convex Data …
Persistent link: https://www.econbiz.de/10005478913
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A geometrical setting is constructed, based on Hilbert space, in which the asymptotic properties of estimators can be studied. Estimators are defined in the context of parametrised models, which are treated as submanifolds of an underlying Hilbert manifold, on which a parameter-defining mapping...
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The minimum Covariance Determinant (MCD) scatter estimator is a highly robust estimator for the dispersion matrix of a multivariate, elliptically symmetric distribution. It is fast to compute and intuitively appealing. In this note we derive its influence function and compute the asymptotic...
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parameters in the drift coefficient, and for efficiency. The conditions turn out to be equal to those implying small delta …
Persistent link: https://www.econbiz.de/10005114125
In this Paper we argue that standard tests of portfolio efficiency are biased because they neglect the existence of … adjusted, we argue that tests for portfolio efficiency of financial assets must then be run conditionally upon housing wealth … given and test for efficiency in this framework. Our empirical results support the view that the presence of illiquid wealth …
Persistent link: https://www.econbiz.de/10005114460