  Determination of major specialization is important to lead the student to
focus on areas of study that are of interest as well as in accordance with its
academic credentials. Currently, the determination of major specialization is
done by asking directly to students, regardless of academic outcomes that have
been achieved in the previo us semester. This study discusses the development
of a hybrid model from fuzzy Mamdani and C4.5 algorithm to analyze the
determination of major specialization in informatics engineering courses of
Universities Raya Serang, where C4.5 algorithm is used as a shaper rule (rule)
which is used in the inference stage. Establishment of rules (decision tree)
performed using Weka applications, while for the determination of the decision
support analysis specialization majors using Mamdani fuzzy concept, the
application is done using the help of MATLAB. The results showed that 17 of the
126 students who either choose according to variable concentrations used in
this study.
