Results 61 to 70 of about 1,005 (119)

Nonparametric methods for inference in the presence of instrumental variables

open access: yes, 2005
We suggest two nonparametric approaches, based on kernel methods and orthogonal series to estimating regression functions in the presence of instrumental variables.
Hall, Peter, Horowitz, Joel L.
core   +2 more sources

A Threshold Regularization Method for Inverse Problems [PDF]

open access: yes, 2011
A number of regularization methods for discrete inverse problems consist in considering weighted versions of the usual least square solution. However, these so-called filter methods are generally restricted to monotonic transformations, e.g. the Tikhonov
Rochet, Paul
core   +3 more sources

Optimal bandwidth selection for semi-recursive kernel regression estimators

open access: yes, 2016
In this paper we propose an automatic selection of the bandwidth of the semi-recursive kernel estimators of a regression function defined by the stochastic approximation algorithm.
Slaoui, Yousri
core   +3 more sources

The EFM approach for single-index models

open access: yes, 2011
Single-index models are natural extensions of linear models and circumvent the so-called curse of dimensionality. They are becoming increasingly popular in many scientific fields including biostatistics, medicine, economics and financial econometrics ...
Cui, Xia   +2 more
core   +1 more source

Piecewise linear regularized solution paths

open access: yes, 2007
We consider the generic regularized optimization problem $\hat{\mathsf{\beta}}(\lambda)=\arg \min_{\beta}L({\sf{y}},X{\sf{\beta}})+\lambda J({\sf{\beta}})$. Efron, Hastie, Johnstone and Tibshirani [Ann. Statist.
Rosset, Saharon, Zhu, Ji
core   +2 more sources

Sharp non-asymptotic oracle inequalities for nonparametric heteroscedastic regression models

open access: yes, 2009
An adaptive nonparametric estimation procedure is constructed for heteroscedastic regression when the noise variance depends on the unknown regression.
Galtchouk, Leonid   +1 more
core   +1 more source

Nonparametric methods for volatility density estimation

open access: yes, 2009
Stochastic volatility modelling of financial processes has become increasingly popular. The proposed models usually contain a stationary volatility process.
Spreij, Peter   +2 more
core  

Accelerating the Pool-Adjacent-Violators Algorithm for Isotonic Distributional Regression. [PDF]

open access: yesMethodol Comput Appl Probab, 2022
Henzi A, Mösching A, Dümbgen L.
europepmc   +1 more source

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