Results 141 to 150 of about 15,261 (244)

Analyzing Interval-Censored Recurrence Event Data with Adjusting Informative Observation Times by Propensity Scores

open access: yesMathematics
In this paper, we discuss the statistical inference of interval-censored recurrence event data under an informative observation process. We establish an additive semiparametric mean model for the recurrence event process.
Ni Li, Meiting Lin, Yakun Shang
doaj   +1 more source

Semiparametric Estimation in Multivariate Nonstationary Time Series Models [PDF]

open access: yes
A system of multivariate semiparametric nonlinear time series models is studied with possible dependence structures and nonstationarities in the parametric and nonparametric components.
Peter C.B. Phillips, Jiti Gao
core  

Semiparametric modeling for the cardiometabolic risk index and individual risk factors in the older adult population: A novel proposal.

open access: yesPLoS ONE
The accurate monitoring of metabolic syndrome in older adults is relevant in terms of its early detection, and its management. This study aimed at proposing a novel semiparametric modeling for a cardiometabolic risk index (CMRI) and individual risk ...
Philippe Tagder   +7 more
doaj   +1 more source

Estimation of Copula-Based Semiparametric Time Series Models [PDF]

open access: yes
This paper studies the estimation of a class of copula-based semiparametric stationary Markov models. These models are characterized by nonparametric invariant (or marginal) distributions and parametric copula functions that capture the temporal ...
Yanqin Fan, Xiaohong Chen
core  

Asymptotic Expansions for Some Semiparametric Program Evaluation Estimators [PDF]

open access: yes
We investigate the performance of a class of semiparametric estimators of the treatment effect via asymptotic expansions. We derive approximations to the first two moments of the estimator that are valid to 'second order'.
Oliver Linton, Hidehiko Ichimura
core  

Efficient estimation of parameters in marginals in semiparametric multivariate models [PDF]

open access: yes
Recent literature on semiparametric copula models focused on the situation when the marginals are specified nonparametrically and the copula function is given a parametric form.
Artem Prokhorov, Valentyn Panchenko
core  

Difference based Ridge and Liu type Estimators in Semiparametric Regression Models [PDF]

open access: yes
We consider a difference based ridge regression estimator and a Liu type estimator of the regression parameters in the partial linear semiparametric regression model, y = Xβ + f + ε.
Wolfgang Karl Härdle   +2 more
core  

Semiparametric Model for Bivariate Survival Data Subject to Biased Sampling. [PDF]

open access: yesJ R Stat Soc Series B Stat Methodol, 2019
Piao J, Ning J, Shen Y.
europepmc   +1 more source

Another Look at the Income Elasticity of Non-Point Source Air Pollutants: A Semiparametric Approach [PDF]

open access: yes
In this paper, a semiparametric model is used to examine the relationship between pollution and income for three non-point source pollutants. Statistical tests reject the quadratic specification in favor of the semiparametric model in all cases. However,
Nilanjana Roy, G. Cornelis van Kooten
core  

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