Training method schematic: selecting the best performing
ensemble
from three target conformers. As indicated by the greater than symbols,
the VS performance, measured by either the AUC or EF, is greatest
for the red conformer, followed by the green conformer, and the blue
conformer is the poorest performer. Each method is found in a column,
and all combinatorial possibilities are shown. The VS performance
of enumerations marked with an “X” are not explicitly
evaluated. Hence, the exhaustive method evaluates all combinatorial
possibilities. The slow heuristic assumes the next largest optimal
ensemble is formed only from a combination of the current ensemble
and one of the remaining conformers. The fast heuristic method ranks
the VS performance of each target conformer and assembles ensembles
by successively including conformers of decreasing performance.