Results 31 to 40 of about 991,877 (258)
Nearest neighbour imputation under single index models
Statistical Theory and Related Fields, 2019 A popular imputation method used to compensate for item nonresponse in sample surveys is the nearest neighbour imputation (NNI) method utilising a covariate to defined neighbours.
Jun Shao, Lei Wang
doaj +1 more source
Remote Sensing, 2021 Unmanned aerial vehicle-based multispectral imagery including five spectral bands (blue, green, red, red-edge, and near-infrared) for a rice field in the ripening stage was used to develop regression models for predicting the rice yield and protein ...
Yeseong Kang +6 more
doaj +1 more source
The Single Index Market Model in Agriculture [PDF]
Northeastern Journal of Agricultural and Resource Economics, 1988 This study illustrates the differences in empirical results due to data measurements and estimating procedures when applying the single index market model in agriculture. Gross and net return betas along with systematic and unsystematic risk proportions are estimated and found to be different.
Gempesaw, Conrado M., II +3 more
openaire +2 more sources
A review of water quality index models and their use for assessing surface water quality
Ecological Indicators, 2021 The water quality index (WQI) model is a popular tool for evaluating surface water quality. It uses aggregation techniques that allow conversion of extensive water quality data into a single value or index.
Md. Galal Uddin +2 more
doaj +1 more source
The Single-Index/Cox Mixture Cure Model [PDF]
Biometrics, 2018 AbstractIn survival analysis, it often happens that a certain fraction of the subjects under study never experience the event of interest, that is, they are considered “cured.” In the presence of covariates, a common model for this type of data is the mixture cure model, which assumes that the population consists of two subpopulations, namely the cured
Maïlis Amico +2 more
openaire +2 more sources
A single-index model with multiple-links
Journal of Statistical Planning and Inference, 2020 In a regression model for treatment outcome in a randomized clinical trial, a treatment effect modifier is a covariate that has an interaction with the treatment variable, implying that the treatment efficacies vary across values of such a covariate.
Park, Hyung +3 more
openaire +3 more sources
Bayesian quantile regression for single-index models [PDF]
Statistics and Computing, 2012 Using an asymmetric Laplace distribution, which provides a mechanism for Bayesian inference of quantile regression models, we develop a fully Bayesian approach to fitting single-index models in conditional quantile regression. In this work, we use a Gaussian process prior for the unknown nonparametric link function and a Laplace distribution on the ...
Yuao Hu, Robert B. Gramacy, Heng Lian
openaire +4 more sources
Score estimation in the monotone single‐index model [PDF]
Scandinavian Journal of Statistics, 2018 AbstractWe consider estimation in the single‐index model where the link function is monotone. For this model, a profile least‐squares estimator has been proposed to estimate the unknown link function and index. Although it is natural to propose this procedure, it is still unknown whether it produces index estimates that converge at the parametric rate.
Fadoua Balabdaoui +2 more
openaire +3 more sources
On Partially Linear Single-Index Models with Missing Response and Error-in-Variable Predictors
Journal of Statistical Theory and Applications (JSTA), 2019 In this paper, we consider a partially linear single-index model when missing responses and nonlinear regressors with measurement error are taken into account.
Tsung-Lin Cheng +3 more
doaj +1 more source
Agriculture, 2022 Appropriate modeling methods and feature selection algorithms must be selected to improve the accuracy of early and mid-term remote sensing detection of wheat stripe rust.
Linsheng Huang +6 more
doaj +1 more source