Results 41 to 50 of about 12,193,766 (206)

Hybrid Fourier series and smoothing spline path non-parametrics estimation model

open access: yesFrontiers in Applied Mathematics and Statistics, 2023
Pathway analysis is one way to determine whether there is a causal relationship between extrinsic and intrinsic factors. The linearity assumption is something that can change the model. The shape of the model is subject to linearity assumptions.
Atiek Iriany   +1 more
doaj   +1 more source

Non‐parametric regression under location shifts

open access: yesThe Econometrics Journal, 2011
Summary: Recent work by \textit{Q. Wang} and \textit{P. C. B. Phillips} [Econometrica 77, No. 6, 1901--1948 (2009; Zbl 1182.62088); Econom. Theory 27, No. 2, 235--259 (2011; Zbl 1210.62126)] has shown that ill-posed inverse problems do not arise in non-stationary nonparametric regression and there is no need for nonparametric instrumental variable ...
PHILLIPS, Peter C. B., SU, Liangjun
openaire   +3 more sources

A non-parametric investigation of risk premia [PDF]

open access: yes
This paper investigates features of credit risk using non-parametric techniques, studying determinants of risk premia using a non-parametric term-structure model of the corporate spread. The model, which measures the extra return of defaultable corporate
Peroni, Chiara
core   +2 more sources

Bayesian Geoadditive Seemingly Unrelated Regression [PDF]

open access: yes, 2002
Parametric seemingly unrelated regression (SUR) models are a common tool for multivariate regression analysis when error variables are reasonably correlated, so that separate univariate analysis may result in inefficient estimates of covariate effects. A
Steiner, Winfried J.   +3 more
core   +1 more source

Estimating equivalence scales and non-food needs in Egypt: Parametric and semiparametric regression modeling.

open access: yesPLoS ONE, 2021
This paper investigated the appropriate specifications of Engel curves for non-food expenditure categories and estimated the deprivation indices of non-food needs in rural areas using a semi parametric examination of the presence of saturation points ...
Fuad A Awwad   +2 more
doaj   +1 more source

Non-parametric Regression

open access: yes
Abstract Unlike Chap. 6, this chapter focuses on non-parametric transformations of both the response and the explanatory variables. Transformation of the explanatory variables uses the Generalized Additive Model (GAM), described in Sect. 7.2.
Anthony C. Atkinson   +4 more
openaire   +1 more source

Optimizing Image Focus for Shape From Focus Through Locally Weighted Non-Parametric Regression

open access: yesIEEE Access, 2019
Shape from focus is a passive optical technique that uses multiple images with different focus levels. To compute the sharpness of each pixel in the image sequence, obtained by translating the object plane at a constant step size along the optical axis ...
Hoon-Seok Jang   +2 more
doaj   +1 more source

Smoothing migration intensities with P-TOPALS

open access: yesDemographic Research, 2020
Background: Age-specific migration intensities often display irregularities that need to be removed by graduation, but two current methods for doing so, parametric model migration schedules and non-parametric kernel regression, have their limitations ...
Sigurd Dyrting
doaj   +1 more source

Non-parametric genetic prediction of complex traits with latent Dirichlet process regression models

open access: yesNature Communications, 2017
Genetic prediction of complex traits with polygenic architecture has wide application from animal breeding to disease prevention. Here, Zeng and Zhou develop a non-parametric genetic prediction method based on latent Dirichlet Process regression models.
Ping Zeng, Xiang Zhou
doaj   +1 more source

A Comparative Assessment of Different Modeling Algorithms for Estimating Leaf Nitrogen Content in Winter Wheat Using Multispectral Images from an Unmanned Aerial Vehicle

open access: yesRemote Sensing, 2018
Unmanned aerial vehicle (UAV)-based remote sensing (RS) possesses the significant advantage of being able to efficiently collect images for precision agricultural applications.
Hengbiao Zheng   +9 more
doaj   +1 more source

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