Results 11 to 20 of about 15,261 (244)

Forecasts of Value-at-Risk and Expected Shortfall in the Crude Oil Market: A Wavelet-Based Semiparametric Approach

open access: yesEnergies, 2020
We propose the use of wavelet-based semiparametric models for forecasting the value-at-risk (VaR) and expected shortfall (ES) in the crude oil market. We compared the forecast outcomes across different time scales for three semiparametric models, three ...
Lu Yang, Shigeyuki Hamori
doaj   +1 more source

SEMIPARAMETRIC MULTIVARIATE VOLATILITY MODELS [PDF]

open access: yesEconometric Theory, 2007
Summary: We consider a model for a multivariate time series where the conditional covariance matrix is a function of a finite-dimensional parameter and the innovation distribution is nonparametric. The semiparametric lower bound for the estimation of the Euclidean parameter is characterized, and it is shown that adaptive estimation without ...
Hafner, C.M., Rombouts, J.V.K.
openaire   +3 more sources

Comparing parametric and semiparametric error correction models for estimation of long run equilibrium between exports and imports

open access: yesApstract: Applied Studies in Agribusiness and Commerce, 2017
This paper introduces the semiparametric error correction model for estimation of export-import relationship as an alternative to the least squares approach.
Henry De-Graft Acquah   +1 more
doaj   +1 more source

bsamGP: An R Package for Bayesian Spectral Analysis Models Using Gaussian Process Priors

open access: yesJournal of Statistical Software, 2019
The Bayesian spectral analysis model (BSAM) is a powerful tool to deal with semiparametric methods in regression and density estimation based on the spectral representation of Gaussian process priors. The bsamGP package for R provides a comprehensive set
Seongil Jo   +3 more
doaj   +1 more source

Generalizing sample tree information with semiparametric and parametric models.

open access: yesSilva Fennica, 1995
Semiparametric models, ordinary regression models and mixed models were compared for modelling stem volume in National Forest Inventory data. MSE was lowest for the mixed model.
Kangas, Annika, Korhonen, Kari
doaj   +1 more source

A semiparametric cluster detection method — a comprehensive power comparison with Kulldorff's method

open access: yesInternational Journal of Health Geographics, 2009
Background A semiparametric density ratio method which borrows strength from two or more samples can be applied to moving window of variable size in cluster detection. The method requires neither the prior knowledge of the underlying distribution nor the
Kedem Benjamin, Wen Shihua
doaj   +1 more source

APLIKASI MODEL REGRESI SEMIPARAMETRIK SPLINE TRUNCATED (Studi Kasus: Pasien Demam Berdarah Dengue (DBD) di Rumah Sakit Puri Raharja)

open access: yesE-Jurnal Matematika, 2017
Semiparametric regression is a regression model that includes parametric components and nonparametric components in a model. The regression model in this research is truncated spline semiparametric regression with case studies of patients with Dengue ...
NI WAYAN MERRY NIRMALA YANI   +2 more
doaj   +1 more source

Investigation of Parametric, Non-Parametric and Semiparametric Methods in Regression Analysis

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
Regression analysis is known as statistical methods applied to model and analyze the relationship between variables. Regression method can be examined as parametric, non-parametric and semiparametric regression methods.The parametric regression method ...
Esra Yavuz, Mustafa Şahin
doaj   +1 more source

Semiparametric modelling of multicategorical data [PDF]

open access: yesJournal of Statistical Computation and Simulation, 2004
Parametric multicategorical models are an established tool in statistical data analysis. Alternative semi-parametric models are introduced where part of the explanatory variables is still linearly parametrized and the rest is given as a sum of unspecified functions of the explanatory variables.
Tutz, Gerhard, Scholz, T.
openaire   +1 more source

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