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Schürmann, Femke (author)This thesis discusses and compares methods which try to approximate the assymptotic variance.bachelor thesis 2019
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Musta, E. (author)In this thesis we address the problem of estimating a curve of interest (which might be a probability density, a failure rate or a regression function) under monotonicity constraints. The main concern is investigating large sample distributional properties of smooth isotonic estimators, which have a faster rate of convergence and a nicer...doctoral thesis 2019
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Lopuhaä, H.P. (author), Musta, E. (author)We investigate the asymptotic behavior of the Lp-distance between<br/>a monotone function on a compact interval and a smooth estimator<br/>of this function. Our main result is a central limit theorem for the Lp-error<br/>of smooth isotonic estimators obtained by smoothing a Grenander-type<br/>estimator or isotonizing the ordinary kernel...journal article 2019
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Lopuhaä, H.P. (author), Musta, E. (author)We consider Grenander-type estimators for a monotone function (Formula presented.), obtained as the slope of a concave (convex) estimate of the primitive of λ. Our main result is a central limit theorem for the Hellinger loss, which applies to estimation of a probability density, a regression function or a failure rate. In the case of density...journal article 2018
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Kulikov, V.N. (author), Lopuhaa, H.P. (author)We investigate the limit behavior of the Lk-distance between a decreasing density f and its nonparametric maximum likelihood estimator fn for k ? 1. Due to the inconsistency of fn at zero, the case k = 2.5 turns out to be a kind of transition point.We extend asymptotic normality of the L1-distance to the Lk-distance for 1 ? k < 2.5, and...journal article 2005