Return the mathematical trace of a matrix, the sum of its diagonal elements.

Calculates D-, Ds-, A-, I- and L-optimal designs for non-linear models, via an implementation of the cocktail algorithm (Yu, 2011, <doi:10.1007/s11222-010-9183-2>). Compares designs via their efficiency, and augments any design with a controlled efficiency. An efficient rounding function has been provided to transform approximate designs to exact designs.

Carlos de la Calle-Arroyo

optedr

Calculating Optimal and D-Augmented Designs

Jesús López-Fidalgo

Licesio J. Rodríguez-Aragón

tr function

<dl><dt>M</dt>
<dd>The matrix from which to calculate the trace.</dd></dl>

Arguments

Trace — tr

<dl>

<dt>M</dt>
<dd>The matrix from which to calculate the trace.</dd>

</dl>

tr: Trace

Description

Usage

Value

Arguments