Results 101 to 110 of about 15,886 (254)
Exact asymptotics of the optimal Lp-error of asymmetric linear spline approximation
, 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
Filtering Time Series with Penalized Splines
Studies in Nonlinear Dynamics & Econometrics, 2011 The decomposition and filtering of time series is an important issue in economics and econometrics and related fields. Even though there are numerous competing methods on the market, in applications one often meets one of the few favorites, like the Hodrick & Prescott filter or the Bandpass filter.
Kauermann, Göran +2 more
openaire +3 more sources
Explicit‐Implicit Material Point Method for Dense Granular Flows With a Novel Regularized µ(I) Model
International 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
The relationship between changes in the Economic Sentiment Indicator and real GDP growth: a time-varying coefficient approach [PDF]
The aim of this paper is to capture the time-varying effects of the relationship between changes in the Economic Sentiment Indicator (ESI) and economic growth.
Luca Zanin
core
Oikos, 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
Automatic search intervals for the smoothing parameter in penalized splines. [PDF]
Stat Comput, 2023 Li Z, Cao J.
europepmc +1 more source
Self-Modeling Regression with Random Effects Using Penalized Splines [PDF]
, 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
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Oikos, EarlyView.Niche breadth, reflecting the range of environmental conditions or resources a species can exploit, influences its distribution, persistence, vulnerability to environmental change, and interspecific interactions. The elevational niche‐breadth hypothesis predicts broader ecological niches at higher elevations due to increased environmental stress and ...
Fernando P. Gaona +9 more
wiley +1 more source
Non-Standard Semiparametric Regression via BRugs
Journal of Statistical Software, 2010 We provide several illustrations of Bayesian semiparametric regression analyses in the BRugs package. BRugs facilitates use of the BUGS inference engine from the R computing environment and allows analyses to be managed using scripts.
Jennifer K. Marley, Matthew P. Wand
doaj
Nonparametric maximum likelihood estimation of probability densities by penalty function methods [PDF]
When it is known a priori exactly to which finite dimensional manifold the probability density function gives rise to a set of samples, the parametric maximum likelihood estimation procedure leads to poor estimates and is unstable; while the ...
Demontricher, G. F. +2 more
core +1 more source