Abstract
This technical note is aimed at demonstrating a
mixture-proportioning problem, which uses the
macroevolutionary algorithm (MA) combined with genetic
programming (GP) to estimate the compressive strength
of high-performance concrete (HPC). GP provides system
identification in a transparent and structured way; a
fittest function type of experimental results will be
obtained automatically from this method. MA is a new
concept of species evolution at the higher level. It
could improve the capability of searching global optima
and avoid premature convergence during the selection
process of GP. In the study, two appropriate functions
have been found to represent the relationships between
different ingredients and the compressive strength. The
results show that this new model, MAGP, is better than
the traditional proportional selection GP for HPC
strength estimation.
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