Results 31 to 40 of about 1,669,248 (311)

Finite-Sample Bounds on the Accuracy of Plug-In Estimators of Fisher Information

open access: yesEntropy, 2021
Finite-sample bounds on the accuracy of Bhattacharya’s plug-in estimator for Fisher information are derived. These bounds are further improved by introducing a clipping step that allows for better control over the score function.
Wei Cao   +3 more
doaj   +1 more source

Adaptive Estimation of Nonparametric Functionals

open access: yesJ. Mach. Learn. Res., 2016
We provide general adaptive upper bounds for estimating nonparametric functionals based on second order U-statistics arising from finite dimensional approximation of the infinite dimensional models. We then provide examples of functionals for which the theory produces rate optimally matching adaptive upper and lower bounds.
Lin Liu   +3 more
openaire   +4 more sources

Adaptive Reduction of Curse of Dimensionality in Nonparametric Instrumental Variable Estimation

open access: yesMathematics
Nonparametric estimation of instrumental variable treatment effects typically builds on various nonparametric identification results. However, these estimators often face challenges from the curse of dimensionality in practice, as multi-dimensional ...
Ming-Yueh Huang, Kwun Chuen Gary Chan
doaj   +1 more source

An Assessment of Hermite Function Based Approximations of Mutual Information Applied to Independent Component Analysis

open access: yesEntropy, 2008
At the heart of many ICA techniques is a nonparametric estimate of an information measure, usually via nonparametric density estimation, for example, kernel density estimation.
Julian Sorensen
doaj   +1 more source

Optimal designs for testing the functional form of a regression via nonparametric estimation techniques [PDF]

open access: yes, 2000
For the problem of checking linearity in a heteroscedastic nonparametric regression model under a fixed design assumption we study maximin designs which maximize the minimum power of a nonparametric test over a broad class of alternatives from the ...
Stefanie Biedermann   +3 more
core   +1 more source

Bias Adjustment for a Nonparametric Entropy Estimator

open access: yesEntropy, 2013
Zhang in 2012 introduced a nonparametric estimator of Shannon’s entropy, whose bias decays exponentially fast when the alphabet is finite. We propose a methodology to estimate the bias of this estimator.
Zhiyi Zhang, Michael Grabchak
doaj   +1 more source

Nonparametric Estimation of Range Value at Risk

open access: yesComputation, 2023
Range value at risk (RVaR) is a quantile-based risk measure with two parameters. As special examples, the value at risk (VaR) and the expected shortfall (ES), two well-known but competing regulatory risk measures, are both members of the RVaR family. The
Suparna Biswas, Rituparna Sen
doaj   +1 more source

Nonparametric Regression Estimation for Circular Data

open access: yesProceedings, 2019
Non-parametric regression with a circular response variable and a unidimensional linear regressor is a topic which was discussed in the literature.
Andrea Meilán-Vila   +3 more
doaj   +1 more source

Wind power interval prediction based on hybrid semi-cloud model and nonparametric kernel density estimation

open access: yesEnergy Reports, 2022
In today’s increasingly serious world energy crisis, Renewable energy such as wind energy has gradually penetrated into life. Aiming at the uncertainty of wind power and the need of a mass of sample data in nonparametric kernel density estimation, a wind
Kai Zhang   +6 more
doaj   +1 more source

Longitudinal Assessment of Biomarkers in ALS: Discriminative Biomarkers for Disease Progression and Survival

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To assess the association and discriminative performance of serum biomarkers with clinical disease progression and survival in patients with amyotrophic lateral sclerosis (ALS). Methods This retrospective study, conducted at Houston Methodist Hospital, Houston, TX, used longitudinal serum samples collected between January 2018 and ...
David R. Beers   +7 more
wiley   +1 more source

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