Evolving communication technology allows a particular
computer system to work from a local scale network to an
Internet, which is highly potential for implementing ES. Like
an online ES, for instance, web usage that allows an ES to be
accessible by more users. However, this system costs more
complex development [14]. An ES as online consultation
media has to pay attention to the interaction aspects. The
systems are supposed to be capable for dynamically generating
interface for the users, including from consultation process
until inference process [15].