Results 11 to 20 of about 993,390 (258)

Analysis of Double Single Index Models. [PDF]

open access: yesScand Stat Theory Appl, 2017
Abstract Motivated from problems in canonical correlation analysis, reduced rank regression and sufficient dimension reduction, we introduce a double dimension reduction model where a single index of the multivariate response is linked to the multivariate covariate through a single index of these covariates, hence the name double ...
Chen K, Ma Y.
europepmc   +5 more sources

Statistical Inference for High-Dimensional Heteroscedastic Partially Single-Index Models [PDF]

open access: yesEntropy
In this study, we propose a novel penalized empirical likelihood approach that simultaneously performs parameter estimation and variable selection in heteroscedastic partially linear single-index models with a diverging number of parameters.
Jianglin Fang, Zhikun Tian
doaj   +2 more sources

Robust Variable Selection Based on Penalized Composite Quantile Regression for High-Dimensional Single-Index Models

open access: yesMathematics, 2022
The single-index model is an intuitive extension of the linear regression model. It has been increasingly popular due to its flexibility in modeling. In this work, we focus on the estimators of the parameters and the unknown link function for the single ...
Yunquan Song, Zitong Li, Minglu Fang
doaj   +3 more sources

SiAM: A Hybrid of Single Index Models and Additive Models. [PDF]

open access: yesElectron J Stat, 2017
While popular, single index models and additive models have potential limitations, a fact that leads us to propose SiAM, a novel hybrid combination of these two models. We first address model identifiability under general assumptions. The result is of independent interest.
Ma S, Lian H, Liang H, Carroll RJ.
europepmc   +4 more sources

A bootstrap test for single index models [PDF]

open access: yesStatistics, 2001
Single index models are frequently used in econometrics and biometrics. Logit and Probit models arc special cases with fixed link functions. In this paper we consider a bootstrap specification test that detects nonparametric deviations of the link function.
Wolfgang Karl Härdle   +2 more
exaly   +7 more sources

Optimal Smoothing in Single-Index Models

open access: yesAnnals of Statistics, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wolfgang Karl Härdle   +1 more
exaly   +3 more sources

Simplification of a Three-Constant Intraocular Lens Calculation Formula to a Single-Constant Approach: The Haigis Formula [PDF]

open access: yesDiagnostics
Background/Objectives: To derive and validate a simplified modification of the Haigis intraocular lens (IOL) power calculation formula by reducing the three-constant effective lens position (ELP) model to a single constant while introducing an optimized ...
Achim Langenbucher   +6 more
doaj   +2 more sources

Large-scale multi-omics enhance risk prediction for type 2 diabetes [PDF]

open access: yesCardiovascular Diabetology
Background Polygenic risk scores (PRS), metabolomics, and proteomics have each shown promise in improving type 2 diabetes risk prediction, but their combined utility beyond established clinical models remains unclear.
Ruijie Xie   +2 more
doaj   +2 more sources

Estimation for single-index and partially linear single-index integrated models

open access: yesAnnals of Statistics, 2016
Published at http://dx.doi.org/10.1214/15-AOS1372 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Jití Gao   +2 more
exaly   +4 more sources

A perioperative multi-modal fusion and deep learning-based prognostic system for upper tract urothelial carcinoma: a multi-institutional study [PDF]

open access: yesInsights into Imaging
Objectives Precise perioperative risk stratification for upper tract urothelial carcinoma (UTUC) is essential. We developed a multimodal prognostic model integrating perioperative clinical data, radiomics, and deep learning (DL) features from baseline CT
Xiang Peng   +10 more
doaj   +2 more sources

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