Results 91 to 100 of about 15,953 (268)

The use of spline, Bayesian spline and penalized Bayesian spline regression for modeling

open access: yes, 2021
Splayn, cezalandırılmış splayn ve Bayesyen splayn olarak adlandırılan parametrik olmayan regresyon yöntemleri modellemede esneklik ve sabit bir modele bağlı olmamak gibi büyük avantajlar sağlar. Cezalandırılmış splayn regresyon, parametrik olmayan splayn düzeltme düşüncesini kullanır.
openaire   +2 more sources

Nonparametric inference in hidden Markov models using P-splines [PDF]

open access: yes, 2013
Hidden Markov models (HMMs) are flexible time series models in which the distributions of the observations depend on unobserved serially correlated states.
Alexandrovich   +25 more
core   +3 more sources

Quantitative Diffusion and T2 Mapping Using RF‐Modulated Phase‐Based Gradient Echo Imaging

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To introduce and evaluate the feasibility of a novel RF‐phase modulated gradient echo (GRE) method for quantitative diffusion MRI, aimed at mitigating geometric distortion and enabling high‐resolution 3D quantitative diffusion/T2 mapping as a complementary alternative to conventional DWI.
Daiki Tamada   +4 more
wiley   +1 more source

Bayesian Analysis for Penalized Spline Regression Using WinBUGS [PDF]

open access: yes
Penalized splines can be viewed as BLUPs in a mixed model framework, which allows the use of mixed model software for smoothing. Thus, software originally developed for Bayesian analysis of mixed models can be used for penalized spline regression ...
Ciprian M. Crainiceanu   +2 more
core   +1 more source

Self-Modeling Regression with Random Effects Using Penalized Splines [PDF]

open access: yes, 2000
20 pages, 1 article*Self-Modeling Regression with Random Effects Using Penalized Splines* (Altman, Naomi S.; Villarreal, Julio C.) 20 ...
Altman, Naomi S.   +4 more
core  

Boosting Additive Models using Component-wise P-Splines [PDF]

open access: yes, 2007
We consider an efficient approximation of Bühlmann & Yu’s L2Boosting algorithm with component-wise smoothing splines. Smoothing spline base-learners are replaced by P-spline base-learners which yield similar prediction errors but are more advantageous ...
Hothorn, Torsten, Schmid, Matthias
core   +1 more source

Explicit‐Implicit Material Point Method for Dense Granular Flows With a Novel Regularized µ(I) Model

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT The material point method (MPM) is widely employed to simulate granular flows. Although explicit time integration is favored in most current MPM implementations for its simplicity, it cannot rigorously incorporate the incompressible µ(I)‐rheology, an efficient model ubiquitously adopted in other particle‐based numerical methods. While operator‐
Hang Feng, Zhen‐Yu Yin
wiley   +1 more source

Robust estimation of the expected survival probabilities from high-dimensional Cox models with biomarker-by-treatment interactions in randomized clinical trials

open access: yesBMC Medical Research Methodology, 2017
Background Thanks to the advances in genomics and targeted treatments, more and more prediction models based on biomarkers are being developed to predict potential benefit from treatments in a randomized clinical trial.
Nils Ternès   +2 more
doaj   +1 more source

Functional diversity in agricultural landscapes: evidence of long‐term clustering and multi‐scale effects of land use on avian communities

open access: yesOikos, EarlyView.
Functional diversity (FD) is an essential community property connecting biodiversity, ecosystem functioning, and conservation objectives. In agricultural landscapes, avian communities, which play key functional roles, are facing large‐scale biodiversity erosion, largely due to land‐use changes.
Pietro Tirozzi   +3 more
wiley   +1 more source

Exact asymptotics of the optimal Lp-error of asymmetric linear spline approximation

open access: yes, 2013
In this paper we study the best asymmetric (sometimes also called penalized or sign-sensitive) approximation in the metrics of the space $L_p$, $1\leqslant p\leqslant\infty$, of functions $f\in C^2\left([0,1]^2\right)$ with nonnegative Hessian by ...
Babenko, Vladyslav   +3 more
core  

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