abstract = "This paper presents a simple method to control bloat
which is based on the idea of strategically and
dynamically creating fitness ``holes'' in the fitness
landscape which repel the population. In particular we
create holes by zeroing the fitness of a certain
proportion of the offspring that have above average
length. Unlike other methods where all individuals are
penalised when length constraints are violated, here we
randomly penalise only a fixed proportion of all the
constraint-violating offspring. The paper describes the
theoretical foundation for this method and reports the
results of its empirical validation with two relatively
hard test problems, which has confirmed the
effectiveness of the approach.",
notes = "EuroGP'2003 held in conjunction with EvoWorkshops
2003