A. Analysis of Expert System Development In developing an ES, it is important for us to know that the criteria that are need to build a successful system. A system is considered successful when it can perform tasks as intelligence as human thinking and also it has the nature of intelligence [7]. In addition, cost of building an ES is always a concern for vendor to take in considerations, so it is important that error to made can be minimize to the lowest in order to save cost. As market demand, a user friendly expert system has slowly become a need because a user friendly system will save time and effort for end user when they first time expose to the system [7].
Meanwhile, attributes also are important factors in
developing ES. It helps knowledge engineer in project
characterization and also selection of RE techniques. The
key attributes and characteristics that have direct effect
on an ES are [1]: