update_weightsI: Update weight I-Optimality

In optedr: Calculating Optimal and D-Augmented Designs

Update weight I-Optimality

Description

Implementation of the weight update formula for I-Optimality used to optimize the weights of a design, which is to be applied iteratively until no sizable changes happen. A-Optimality if instead of the integral matrix the identity function is used.

Usage

update_weightsI(design, sens, crit, delta)

Arguments

design	Design to optimize the weights from. It's a dataframe with two columns: Point contains the support points of the design. Weight contains the corresponding weights of the Points.
sens	Sensibility function for the design and model.
crit	Value of the criterion function for I-Optimality.
delta	A parameter of the algorithm that can be tuned. Must be 0< delta < 1.

Value

returns the new weights of the design after one iteration.

optedr documentation built on Nov. 18, 2022, 5:12 p.m.