getOptimalSpline: Extract the optimal spline model parameters from the...

In LoBrA: Generalized Spline Mixed Effect Models for Longitudinal Breath Data

Extract the optimal spline model parameters from the ModelSelection Object.

Description

The method calculates which spline model and parameters worked best with respect to the median of the specified quality measure. The median is calculated among all component models.

Usage

getOptimalSpline(
  lobraModelSelectionObject,
  qualityMeasure = "AIC",
  summeryfun = stats::median
)

Arguments

lobraModelSelectionObject	LDOmodelselection created by the 'lobraModelSelection' function. It stores all evaluated Spline models to chose from.
qualityMeasure	Quality measure to be used to select the optimal spline.
summeryfun	Define the Summery function to be used. Default value is set to stats::median. Other possible functions would be mean, for instance.

Value

The function returns a 'lobraModelSelectionObject' that contains the optimal model according to the specified quality measure. @seealso plot.modelSelectionEvaluation

Examples

## Not run: 
 
  data(LoBraExample)
  selectedLDO <- selectComponents(ldo, components)
  potentialBreaks=c(8, 12)
  nknots=c(1, 2)
  qualityMeasure=c("AIC", "BIC")
  ldoSelect<- lobraModelSelection(selectedLDO, potentialBreaks, nknots, qualityMeasure)
  
  optimalAIC<-getOptimalSpline(ldoSelect, qualityMeasure="AIC", summeryfun=stats::median)
  message(optimalAIC@breaks);
  
  optimalBIC<-getOptimalSpline(ldoSelect, qualityMeasure="BIC", summeryfun=base::mean)
  hist(unlist(optimalBIC@quality));

LoBrA documentation built on March 22, 2022, 1:06 a.m.