This algorithm is a successor to ID3 developed by Quinlan
Ross [2]. It is also based on Hunt’s algorithm.C4.5 handles
both categorical and continuous attributes to build a decision
tree. In order to handle continuous attributes, C4.5 splits the
attribute values into two partitions based on the selected
threshold such that all the values above the threshold as one
child and the remaining as another child. It also handles
missing attribute values. C4.5 uses Gain Ratio as an attribute
selection measure to build a decision tree. It removes the
biasness of information gain when there are many outcome
values of an attribute