Expert systems are described as 'knowledge based systems'. They
consist of a computer program that contains subject-specific knowledge
and the analytical logic of one or more human experts.
An expert system is the first stage down the toward of artificial
To date, expert systems have been largely focused on decision making.
The logic consists of sets of rules and dependencies that analyze
information related to a specific class of problems. It applies
mathematical analysis of the problem, and, depending upon their
design, recommends a course of user action to implement a remedy.
Its apparent intelligence and reasoning capabilities to reach conclusions
are constrained by the logical relationships entered by the programmer.
A simple form of expert system is what we know as a 'wizard'. A
wizard walks you step by step through a scenario, and based upon
your answers at each step, presents you with the next set of questions,
until it reaches a point where a logical conclusion can be made
as to how best to action the task or remedy the issue.
Software installation "Wizards" are not expert systems.
Advantages and Disadvantages
Significant cost savings can result from the use of expert systems.
They are also highly valued in preserving corporate intelligence
- Speed up decision making
- Quality improvement by providing consistent answers for repetitive
decisions, processes and tasks
- Preserve scarce expertise
- Hold and maintain significant levels of information
- Reduces creating entry barriers to competitors
- Review transactions that human experts may overlook
- Lack human common sense needed in some decision makings
- Creative responses human experts can respond to in unusual
- Domain experts not always able to explain their logic and reasoning
- Challenges of automating complex processes
- Lack of flexibility and ability to adapt to changing environments
as questions are standard and cannot be changed
- Not able to recognize when no answer is available
Expert systems are now commonly integrated with conventional information
technology and databases.
of Problems Solved By Expert Systems
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