abstract = "Unnecessary growth in program size is known as bloat
problem in Genetic Programming. There are a large
number of studies addressing this problem. In this
paper, we propose an effective bloat control mechanism
which is based on examining the contribution of each
function node in the selected programs. Nodes without
contribution will be removed before generating
offspring. The results show that the method can
significantly reduce program size without compromising
fitness. Furthermore it speeds up evolution processes
because of the saving in evaluation costs.",
notes = "GECCO-2009 A joint meeting of the eighteenth
international conference on genetic algorithms
(ICGA-2009) and the fourteenth annual genetic
programming conference (GP-2009).