Results 11 to 20 of about 777 (154)

On a Problem in Semiparametric Estimation [PDF]

open access: yes, 1991
The estimation problem in a semiparametric model, namely, the generalized Lehmann alternative model, is considered here. Suppose that two independent samples X1,…,Xm and Y1, …,Yn with d.f.’s F and G, respectively, are observed. Assume that G(·)=H(F(·);θ), where the form of the function H is known, but F and the parameter θ are unknown.
JAMMALAMADAKA, SR, WAN, X
openaire   +2 more sources

Semiparametric Regression Pursuit [PDF]

open access: yesStatistica Sinica, 2012
The semiparametric partially linear model allows flexible modeling of covariate effects on the response variable in regression. It combines the flexibility of nonparametric regression and parsimony of linear regression. The most important assumption in the existing methods for the estimation in this model is to assume a priori that it is known which ...
Jian, Huang, Fengrong, Wei, Shuangge, Ma
openaire   +2 more sources

Right-Censored Time Series Modeling by Modified Semi-Parametric A-Spline Estimator

open access: yesEntropy, 2021
This paper focuses on the adaptive spline (A-spline) fitting of the semiparametric regression model to time series data with right-censored observations.
Dursun Aydın   +2 more
doaj   +1 more source

THE APPLICATION OF THE SEMIPARAMETRIC GSTAR MODEL IN DETERMINING GAMMA-RAY LOG DATA ON SOIL LAYERS

open access: yesMedia Statistika, 2022
This research examines the semiparametric Generalized Space-Time Autoregressive (GSTAR) spacetime modeling and determines its spatial weight. In general, the spatial weights used are uniform, binary weights, and based on the distance, the result is a ...
Yundari Yundari, Shantika Martha
doaj   +1 more source

Regional Modeling of Forest Fuels and Structural Attributes Using Airborne Laser Scanning Data in Oregon

open access: yesRemote Sensing, 2021
Airborne laser scanning (ALS) acquisitions provide piecemeal coverage across the western US, as collections are organized by local managers of individual project areas.
Francisco Mauro   +7 more
doaj   +1 more source

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

Fitting Nonlinear Structural Equation Models in R with Package nlsem

open access: yesJournal of Statistical Software, 2017
Structural equation mixture modeling (SEMM) has become a standard procedure in latent variable modeling over the last two decades (Jedidi, Jagpal, and DeSarbo 1997b; Muthén and Shedden 1999; Muthén 2001, 2004; Muthén and Asparouhov 2009).
Nora Umbach   +3 more
doaj   +1 more source

ESTIMASI PARAMETER COX SEMIPARAMETRIC HAZARDS MODEL DENGAN METODE EFRON PADA DATA TERSENSOR KANAN

open access: yesJurnal Matematika UNAND, 2021
Salah satu kendala yang sering dihadapi pada penelitian survival adalah adanya data tersensor. Jika data tersensor dihilangkan, maka akan terjadi bias. Pengolahan data tersensor dapat dilakukan dengan Cox Semiparametric Hazards model. Pada penelitian ini,
TEDY MACHMUD   +3 more
doaj   +1 more source

The influence function of semiparametric estimators [PDF]

open access: yesQuantitative Economics, 2015
There are many economic parameters that depend on nonparametric first steps. Examples include games, dynamic discrete choice, average exact consumer surplus, and treatment effects. Often estimators of these parameters are asymptotically equivalent to a sample average of an object referred to as the influence function.
Hidehiko Ichimura, Whitney K. Newey
openaire   +7 more sources

Endogeneity in Semiparametric Threshold Regression [PDF]

open access: yesSSRN Electronic Journal, 2017
This paper estimates threshold regression models with an endogenous threshold variable using a nonparametric control function approach. Assuming diminishing threshold effects, we derive the consistency and limiting distribution of our proposed estimator constructed from the series approximation method for weakly dependent data.
Kourtellos, Andros   +2 more
openaire   +1 more source

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