Results 21 to 30 of about 8,082 (216)

Variable selection for the single-index model [PDF]

open access: yesBiometrika, 2007
We consider variable selection in the single-index model. We prove that the popular leave-m-out crossvalidation method has different behaviour in the single-index model from that in linear regression models or nonparametric regression models. A new consistent variable selection method, called separated crossvalidation, is proposed.
Kong, E., Xia, Y.
openaire   +2 more sources

Sharia stocks optimal portfolio analysis using single index model

open access: yesJPPI (Jurnal Penelitian Pendidikan Indonesia), 2022
This study is aimed to analyze the optimal portfolio of Jakarta Islamic Index within December 2016 to November 2019 period. The research samples that were being used in this study were the stocks that are consistently included in JII during the study ...
Gatot Hendra Prakoso   +1 more
doaj   +1 more source

An Adaptive-to-Model Test for Parametric Functional Single-Index Model

open access: yesMathematics, 2023
Model checking methods based on non-parametric estimation are widely used because of their tractable limiting null distributions and being sensitive to high-frequency oscillation alternative models.
Lili Xia, Tingyu Lai, Zhongzhan Zhang
doaj   +1 more source

Single Index Regression Model for Functional Quasi-Associated Times Series Data

open access: yesRevstat Statistical Journal, 2023
The mixing condition is often considered to modeling the functional time series data. Alternatively, in this work we consider the problem of nonparametric estimation of the regression function in Single Functional Index Model (SFIM) under the quasia ...
Salim Bouzebda   +2 more
doaj   +1 more source

Risk Costs and the Choice of Market Return Index

open access: yesJournal of Agricultural and Resource Economics, 1992
Six measures of returns are used to estimate the most "appropriate" market index for southeast Kansas farms. Results suggest that localized indices are more appropriate than state indices for use as the market index.
Koffi N. Amegbeto, Allen M. Featherstone
doaj   +1 more source

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.
Härdle, Wolfgang   +2 more
openaire   +6 more sources

Sparse single-index model

open access: yesJ. Mach. Learn. Res., 2011
Let $(\bX, Y)$ be a random pair taking values in $\mathbb R^p \times \mathbb R$. In the so-called single-index model, one has $Y=f^{\star}(θ^{\star T}\bX)+\bW$, where $f^{\star}$ is an unknown univariate measurable function, $θ^{\star}$ is an unknown vector in $\mathbb R^d$, and $W$ denotes a random noise satisfying $\mathbb E[\bW|\bX]=0$.
Alquier, Pierre, Biau, Gérard
openaire   +5 more sources

Rancangan Strategi Portofolio Optimal PT. ABC dengan Metode Single Index Model

open access: yesJKBM (Jurnal Konsep Bisnis dan Manajemen), 2021
As social insurance company of the Republic of Indonesia, PT ABC (Persero) has a captive market based on the provisions of Undang-undang in Indonesia.
Ramadhan Dwi Saputra   +1 more
doaj   +1 more source

Bayesian composite quantile regression for the single-index model.

open access: yesPLoS ONE, 2023
By using a Gaussian process prior and a location-scale mixture representation of the asymmetric Laplace distribution, we develop a Bayesian analysis for the composite quantile single-index regression model.
Xiaohui Yuan, Xuefei Xiang, Xinran Zhang
doaj   +1 more source

Analisis Portofolio Optimal Saham Indeks Lq-45 Dengan Model Indeks Tunggal Di Bursa Efek Indonesia

open access: yesJurnal Perilaku dan Strategi Bisnis, 2017
Rational investors  invest in efficient stocks, the stocks that have  high return with minimum risk. The sample in this study using the stocks in the group LQ-45 index during the period February 2013-July 2013.
ALMUNFARIJAH ALMUNFARIJAH
doaj   +1 more source

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