Results 1 to 10 of about 327 (120)

Fractal Perturbation of the Nadaraya–Watson Estimator

open access: yesFractal and Fractional, 2022
One of the main tasks in the problems of machine learning and curve fitting is to develop suitable models for given data sets. It requires to generate a function to approximate the data arising from some unknown function.
Dah-Chin Luor, Chiao-Wen Liu
exaly   +3 more sources

Application of the Nadaraya-Watson estimator based attention mechanism to the field of predictive maintenance [PDF]

open access: yesMethodsX
Attention mechanism has recently gained immense importance in the natural language processing (NLP) world. This technique highlights parts of the input text that the NLP task (such as translation) must pay “attention” to.
Rajesh Siraskar   +4 more
doaj   +2 more sources

Heterogeneous Treatment Effect with Trained Kernels of the Nadaraya–Watson Regression

open access: yesAlgorithms, 2023
A new method for estimating the conditional average treatment effect is proposed in this paper. It is called TNW-CATE (the Trainable Nadaraya–Watson regression for CATE) and based on the assumption that the number of controls is rather large and the ...
Andrei V Konstantinov   +2 more
exaly   +3 more sources

Nonparametric Expectile Shortfall Regression for Complex Functional Structure [PDF]

open access: yesEntropy
This paper treats the problem of risk management through a new conditional expected shortfall function. The new risk metric is defined by the expectile as the shortfall threshold.
Mohammed B. Alamari   +3 more
doaj   +2 more sources

Application of non-parametric models for analyzing survival data of COVID-19 patients [PDF]

open access: yesJournal of Infection and Public Health, 2021
Background: COVID-19 Coronavirus variants are emerging across the globe causing ongoing pandemics. It is important to estimate the case fatality ratio (CFR) during such an epidemic of a potentially fatal disease. Methods: Firstly, we have performed a non-
Sarada Ghosh   +2 more
doaj   +2 more sources

Inference About Separable Causal Effects With Longitudinal Bivariate Ordinal Responses With Missingness and Censoring. [PDF]

open access: yesStat Med
ABSTRACT Causal inference has gained extensive attention in various fields, including healthcare, epidemiology, and social sciences. While many methods have been developed, most research has been directed to handle data with a univariate response variable.
Hu P, Yi GY.
europepmc   +2 more sources

COMPARING GAUSSIAN AND EPANECHNIKOV KERNEL OF NONPARAMETRIC REGRESSION IN FORECASTING ISSI (INDONESIA SHARIA STOCK INDEX)

open access: yesBarekeng, 2022
ISSI reflects the movement of sharia stock prices as a whole. It is necessary to forecast the share price to help investors determine whether the shares should be sold, bought, or retained. This study aims to predict the value of ISSI using nonparametric
Yuniar Farida   +2 more
doaj   +1 more source

Local Linear Regression Estimator on the Boundary Correction in Nonparametric Regression Estimation

open access: yesJournal of Statistical Theory and Applications (JSTA), 2020
The precision and accuracy of any estimation can inform one whether to use or not to use the estimated values. It is the crux of the matter to many if not all statisticians.
Langat Reuben Cheruiyot
doaj   +1 more source

Smoothing parameter selection in Nadaraya-Watson kernel nonparametric regression using nature-inspired algorithm optimization [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2020
In the context of Nadaraya-Watson kernel nonparametric regression, the curve estimation is fully depending on the smoothing parameter. At this point, the nature-inspired algorithms can be used as an alternative tool to find the optimal selection. In this
Zinah Basheer, Zakariya Algamal
doaj   +1 more source

Estimation in Semi-Varying Coefficient Heteroscedastic Instrumental Variable Models with Missing Responses

open access: yesMathematics, 2023
This paper studies the estimation problem for semi-varying coefficient heteroscedastic instrumental variable models with missing responses. First, we propose the adjusted estimators for unknown parameters and smooth functional coefficients utilizing the ...
Weiwei Zhang, Jingxuan Luo, Shengyun Ma
doaj   +1 more source

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