Results 41 to 50 of about 28,804 (260)

Smoothing with Curvature Constraints based on Boosting Techniques [PDF]

open access: yes, 2006
In many applications it is known that the underlying smooth function is constrained to have a specific form. In the present paper, we propose an estimation method based on the regression spline approach, which allows to include concavity or convexity ...
Leitenstorfer, Florian, Tutz, Gerhard
core   +5 more sources

TUBERCULOSIS CASE MODEL USING GCV AND UBR KNOT SELECTION METHODS IN TRUNCATED SPLINE NONPARAMETRIC REGRESSION

open access: yesBarekeng, 2023
The nonparametric regression approach is used when the shape of the regression curve is not known. The advantage of nonparametric regression is that it has a high degree of flexibility.
Sitti Anggraeni   +2 more
doaj   +1 more source

Generalized structured additive regression based on Bayesian P-splines [PDF]

open access: yes, 2003
Generalized additive models (GAM) for modelling nonlinear effects of continuous covariates are now well established tools for the applied statistician. In this paper we develop Bayesian GAM's and extensions to generalized structured additive regression ...
Brezger, Andreas, Lang, S.
core   +3 more sources

MODELING DHF IN CENTRAL JAVA USING HYBRID NONPARAMETRIC SPLINE TRUNCATED-FOURIER SERIES APPROACH

open access: yesBarekeng
Regression analysis aims to determine the relationship and influence of predictor variables on response variables through regression curve. The problem with nonparametric regression research so far is that it only uses one approach, causing the ...
Tiani Wahyu Utami   +2 more
doaj   +1 more source

Bivariate hierarchical Hermite spline quasi--interpolation

open access: yes, 2016
Spline quasi-interpolation (QI) is a general and powerful approach for the construction of low cost and accurate approximations of a given function. In order to provide an efficient adaptive approximation scheme in the bivariate setting, we consider ...
Bracco, Cesare   +3 more
core   +1 more source

Monotonic regression based on Bayesian P-splines: an application to estimating price response functions from store-level scanner data [PDF]

open access: yes, 2003
Generalized additive models have become a widely used instrument for flexible regression analysis. In many practical situations, however, it is desirable to restrict the flexibility of nonparametric estimation in order to accommodate a presumed monotonic
Brezger, Andreas, Steiner, Winfried J.
core   +2 more sources

METODE KUADRAT TERKECIL UNTUK ESTIMASI KURVA REGRESI SEMIPARAMETRIK SPLINE [PDF]

open access: yes, 2009
Pada regresi semiparametrik, untuk memperoleh estimator spline padadasarnya terdapat dua pendekatan optimasi, yaitu estimator spline yang diperoleh berdasarkan optimasi penalized least square (PLS) dan estimator spline yang diperoleh berdasarkan optimasi
I Nyoman, Budiantara   +2 more
core  

Spline-based self-controlled case series method [PDF]

open access: yes, 2017
The self-controlled case series (SCCS) method is an alternative to study designs such as cohort and case control methods and is used to investigate potential associations between the timing of vaccine or other drug exposures and adverse events.
de Boor   +15 more
core   +1 more source

Changes in Immune‐Inflammation Status and Acute Ischemic Stroke Prognosis in Prospective Cohort

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Inflammation is a critical risk factor for poor outcomes in cerebral infarction. Prior studies focused primarily on baseline inflammation status, neglecting dynamic longitudinal changes. We try to investigate the association between immune‐inflammation status alterations and stroke prognosis, and evaluated three systemic biomarkers'
Songfang Chen   +11 more
wiley   +1 more source

Further Properties of Quantum Spline Spaces

open access: yesMathematics, 2020
We construct q-B-splines using a new form of truncated power functions. We give basic properties to show that q-B-splines form a basis for quantum spline spaces.
Gülter Budakçı, Halil Oruç
doaj   +1 more source

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