Results 31 to 40 of about 170,593 (200)

P-spline anova-type interaction models for spatio-temporal smoothing [PDF]

open access: yes, 2009
In recent years, spatial and spatio-temporal modelling have become an important area of research in many fields (epidemiology, environmental studies, disease mapping, ...).
Lee, Dae-Jin   +1 more
core   +1 more source

A-Spline Regression for Fitting a Nonparametric Regression Function with Censored Data

open access: yesStats, 2020
This paper aims to solve the problem of fitting a nonparametric regression function with right-censored data. In general, issues of censorship in the response variable are solved by synthetic data transformation based on the Kaplan–Meier estimator in the
Ersin Yılmaz   +2 more
doaj   +1 more source

Estimating conditional heteroscedastic nonlinear autoregressive model by using smoothing spline and penalized spline methods [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2019
We propose smoothing spline (SS) and penalized spline (PS) methods in a class of nonparametric regression methods for estimating the unknown functions in a conditional heteroscedastic nonlinear autoregressive (CHNLAR) model.
Autcha Araveeporn
doaj   +1 more source

Fuzzy clustering of time series gene expression data with cubic-spline [PDF]

open access: yes, 2013
Data clustering techniques have been applied to ex- tract information from gene expression data for two decades. A large volume of novel clustering algorithms have been developed and achieved great success.
Ali, Akhtar, Wang, Yu, Angelova, Maia
core   +1 more source

Development of Ramsey RESET to Identify the Polynomials Order of Smoothing Spline with Simulation Study

open access: yesJTAM (Jurnal Teori dan Aplikasi Matematika)
Path  analysis is used to determine the effect of exogenous variables on endogenous variables. One of the assumptions in path analysis is the linearity assumption. The linearity assumption can be tested using Ramsey RESET.
Muhammad Rafi Hasan Nurdin   +3 more
doaj   +1 more source

Smoothing Spline ANOVA Models: R Package gss

open access: yesJournal of Statistical Software, 2014
This document provides a brief introduction to the R package gss for nonparametric statistical modeling in a variety of problem settings including regression, density estimation, and hazard estimation.
Chong Gu
doaj   +1 more source

Efficient estimation of smoothing spline with exact shape constraints

open access: yesStatistical Theory and Related Fields, 2021
Smoothing spline is a popular method in non-parametric function estimation. For the analysis of data from real applications, specific shapes on the estimated function are often required to ensure the estimated function undeviating from the domain ...
Vincent Chan   +4 more
doaj   +1 more source

Precise Tensor Product Smoothing via Spectral Splines

open access: yesStats
Tensor product smoothers are frequently used to include interaction effects in multiple nonparametric regression models. Current implementations of tensor product smoothers either require using approximate penalties, such as those typically used in ...
Nathaniel E. Helwig
doaj   +1 more source

Diagnostics for Smoothing Splines

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 1985
SUMMARY Diagnostic measures appropriate for use with smoothing splines are derived and their properties are investigated. The proposed measures focus on detection of observations which substantially influence the fit and provide additional information over that obtained from examination of residuals alone. A numerical example illustrates
openaire   +2 more sources

On algorithms for generalised smoothing splines [PDF]

open access: yesThe Journal of the Australian Mathematical Society. Series B. Applied Mathematics, 1988
AbstractRecently, considerable interest has been shown in the connection between smoothing splines and a particular class of stochastic processes. Here the connection with an equivalent class of least squares problems is used to develop algorithms, and properties of the solution are examined.
Osborne, M. R., Prvan, Tania
openaire   +2 more sources

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