3 papers
physics.plasm-ph2018
Profile Shape Parameterization of JET Electron Temperature and Density Profiles
Beatrix Schunke, Kaya Imre, Kurt S. Riedel
The temperature and density profiles of the Joint European Torus are parameterized using log-additive models in the control variables. Predictive error criteria are used to determi…
stat.ME2018
A Hierarchy of Empirical Models of Plasma Profiles and Transport
Kaya Imre, Kurt S. Riedel, Beatrix Schunke
Two families of statistical models are presented which generalize global confinement expressions to plasma profiles and local transport coefficients. The temperature or diffusivity…
stat.ME2018
Smoothing Spline Growth Curves With Covariates
Kurt S. Riedel, Kaya Imre
We adapt the interactive spline model of Wahba to growth curves with covariates. The smoothing spline formulation permits a non-parametric representation of the growth curves. In t…