Results 21 to 30 of about 1,663,953 (297)

Resistant Nonparametric Smoothing with S-PLUS

open access: yesJournal of Statistical Software, 2004
In this paper we introduce and illustrate the use of an S-PLUS set of functions to fit M-type smoothing splines with the smoothing parameter chosen by a robust criterion (either a robust version of cross-validation or a robust version of Mallows's Cp ...
Eva Cantoni
doaj   +1 more source

Efficient algorithms for robust generalized cross-validation spline smoothing [PDF]

open access: yes, 2010
Generalized cross-validation (GCV) is a widely used parameter selection criterion for spline smoothing, but it can give poor results if the sample size n is not sufficiently large.
Anderssen, R.S.   +5 more
core   +1 more source

Penalized spline estimator with multi smoothing parameters in bi-response multi-predictor nonparametric regression model for longitudinal data [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2020
Penalized spline estimators that depend on a smoothing parameter is one type of estimator used in the estimation regression curve in nonparametric regression.
Anna Islamiyati, Fatmawati, Nur Chamidah
doaj   +1 more source

On the Number of Independent Pieces of Information in a Functional Linear Model with a Scalar Response

open access: yesStats, 2020
In a functional linear model (FLM) with scalar response, the parameter curve quantifies the relationship between a functional explanatory variable and a scalar response.
Eduardo L. Montoya
doaj   +1 more source

Estimation of the Smoothing Parameters in the HPMV Filter

open access: yesAnnals of the Alexandru Ioan Cuza University - Mathematics, 2011
We suggest an optimality criterion, for choosing the best smoothing parameters for an extension of the so-called Hodrick-Prescott Multivariate (HPMV) filter. We show that this criterion admits a whole set of optimal smoothing parameters, to which belong the widely used noise-to-signal ratios.
Rahmania, Nadji   +2 more
openaire   +2 more sources

Parameter inference in mechanistic models of cellular regulation and signalling pathways using gradient matching [PDF]

open access: yes, 2012
A challenging problem in systems biology is parameter inference in mechanistic models of signalling pathways. In the present article, we investigate an approach based on gradient matching and nonparametric Bayesian modelling with Gaussian processes.
Dondelinger, F.   +7 more
core   +8 more sources

Direct Determination of Smoothing Parameter for Penalized Spline Regression

open access: yesJournal of Probability and Statistics, 2014
Penalized spline estimator is one of the useful smoothing methods. To construct the estimator, having goodness of fit and smoothness, the smoothing parameter should be appropriately selected. The purpose of this paper is to select the smoothing parameter
Takuma Yoshida
doaj   +1 more source

Comparison of Remote Sensing Time-Series Smoothing Methods for Grassland Spring Phenology Extraction on the Qinghai–Tibetan Plateau

open access: yesRemote Sensing, 2020
Accurate evaluation of start of season (SOS) changes is essential to assess the ecosystem’s response to climate change. Smoothing method is an understudied factor that can lead to great uncertainties in SOS extraction, and the applicable situation for ...
Nan Li   +5 more
doaj   +1 more source

Unsupervised estimation of dirichlet smoothing parameters

open access: yesProceedings of the 33rd international ACM SIGIR conference on Research and development in information retrieval, 2010
A standard approach for determining a Dirichlet smoothing parameter is to choose a value which maximizes a retrieval performance metric using training data consisting of queries and relevance judgments. There are, however, situations where training data does not exist or the queries and relevance judgments do not reflect typical user information needs ...
Jangwon Seo, W. Bruce Croft
openaire   +2 more sources

Automatic Smoothing Parameter Selection: A Survey [PDF]

open access: yesEmpirical Economics, 1988
This is a survey of recent developments in smoothing parameter selection for curve estimation. The first goal of this paper is to provide an introduction to the methods available, with discussion at both a practical and also a nontechnical level, including comparison of methods.
openaire   +1 more source

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