abstract = "In real-world data classification, applications often
have an imbalanced distribution of data over various
classes. This imbalanced distribution imposes intense
challenges, and because of this, traditional
classification methods are not effective in this case.
This problem also influences genetic programming (GP).
One approach to resolve this issue is to assign a
custom high weight to the classes during training. This
custom weight assignment may nullify the impact of
higher counts of any classes during the learning phase
of the classifier. The GP fitness function may
introduce the custom weight assignment for the minority
class samples. The fitness function performs an
essential role in GP and influences each building block
of GP. This research work assesses the impact of weight
factors in GP fitness function for imbalanced data
classification. For this assessment, eight imbalanced
classification problems are taken from the UCI
repository, and intensive experimentation is done on
the different weight factors.",