EXPERT
SYSTEM
Dr. Khoerul Anwar, S.T.,M.T
STMIK Pradnya Paramita
KNOWLEDGE MODELING
METHODS
Manual methods (iterview )
structured,
semistructured,
unstructured
Semiautomatic methods
intended to support the experts by allowing them to build
knowledge bases with little or no help from knowledge engineer
intended to help knowledge engineers by allowing them to
execute the necessary tasks in a more efficient or effective
manner
Automatic methods
the expert and the knowledge engineer are minimized or even
STRUCTURED
INTERVIEWS
A structured interview is a systematic,
goal-oriented process.
Organized communication between the
CONT…
The knowledge engineer studies available material on the domain to
identify major demarcations of the relevant knowledge.
The knowledge engineer reviews the planned ES capabilities. He or
she identifies targets for the questions to be asked during the knowledge acquisition session.
The knowledge engineer formally schedules and plans the structured
interviews (using a form). Planning includes attending to physical arrangements, defining knowledge acquisition session goals and agendas, and identifying or refining major areas of questioning.
The knowledge engineer may write sample questions, focusing on
question type, level, and questioning techniques.
The knowledge engineer ensures that the domain expert
understands the purpose and goals of the session and encourages the expert to prepare before the interview.
During the interview, the knowledge engineer follows guidelines for
conducting interviews.
During the interview, the knowledge engineer uses directional control
OTHER MANUAL KNOWLEDGE
MODELING METHODS
Case analysis
Critical incident analysis.
Discussions with users.
Commentaries.
Conceptual graphs and models.
Brainstorming.
Prototyping
Multidimensional scaling.
Automatic Knowledge Modeling Methods
The process of using computers
to
extract knowledge from data is called
knowledge discovery.
There are
two major reasons
for the use
of automated knowledge acquisition
Good knowledge engineers are highly paid
and difficult to find, and
domain experts are usually busy and
Cont..
manual and even semiautomatic elicitation
methods are slow and expensive (
deficiencies
)
The correlation between verbal reports and mental
behavior is often weak.
In certain situations, experts are unable to provide
an overall account of how they make decisions.
The quality of the system depends too much on the
quality of the expert and the knowledge engineer.
The expert does not understand the ES technology.
