abstract = "The main indicators of the performance of an image
classifier include classification accuracy,
classification efficiency and evolution efficiency,
whereas the sizes of the programs involved in genetic
programming stand as one of the major factors that
influence the performance of the classifier. Some
effective means are introduced in this paper for the
control of program sizes, which is done through
scientific construction of fitness functions of the
classifier in image classification in genetic
programming. Tests showed that, the growth of program
sizes were effectively put under control during the
course of evolution, which, in turn, greatly improved
the general performance of the image classifier in
genetic programming.",
notes = "Artificial Intelligence Research Center, Agricultural
University of Hebei, Baoding 071001, China