This paper presents a comparative study involving a genetic algorithm,
simulated annealing, and stepwise elimination, as methods for wavelen
gth selection in multi-component analysis. The wavelength selection cr
iteria used are the selectivity and accuracy after Lorber, and the min
imal mean squared error after Sasaki. The genetic algorithm generally
performed best. Stepwise elimination performed surprisingly good despi
te its local search heuristic. Simulated annealing performed worst, wh
ich is remarkable in view of the fact that this method is widely prais
ed in the literature for properties similar to those of genetic algori
thms, e.g., a probabilistic, non-local search heuristic.