Tsukamoto is a method of fuzzy inference system using a weighted average of the if-then
rules. It was can be used to soft skills assessment. It was not carried out strictly like truth value
in boolean logic (True or False). Assessment of student’s soft skills by drafting rules based on
assessment factors and calculate the value of the predicate of each rule to obtain the value
weighted averages. Membership function is described by a linear function of representation.
fuzzy system, tsukamoto, soft-skill