1. By Anita Johri INFS 401 Spring 2012
DSS Vs Expert System
By Anita Johri
INFS 401
Spring 2012

2. What is DSS?
Helps in decision making when trying to figure out solution for a non structured decision. Focuses on problems that are unique, non routine & rapidly changing.
Spring 2012
Anita Johri - INFS 401

3. 3 Components of DSS: Model Management Data Management
User Interface Management
Spring 2012
Anita Johri - INFS 401

4. Examples…of DSS:
Spring 2012
Anita Johri - INFS 401

5. What is Expert System?
Major roles of individuals who interact with the system
Domain expert
Knowledge engineer
User
The major components are:
• Knowledge base
• Working storage
• Inference engine
• User interface
Spring 2012
Anita Johri - INFS 401

6. Problems in developing an ES:
The expert is unable to communicate his/her ideas
The expert is unwilling to communicate his/her ideas
The expert is not available
Can all the testing be accomplished?
User acceptance
Disadvantages of Rule-Based Expert Systems
Common sense
Creativity
Learning
Sensory Experience
Degradation
Spring 2012
Anita Johri - INFS 401

7. Advantages of ES Availability Cheaper Reduced danger Permanence
Multiple expertise
Explanation
Fast response
Unemotional and response at all times
Spring 2012
Anita Johri - INFS 401

8. Ethical implications:
Do you want to put a decision about your life in the hands of a computer?
When do you think you’d trust a computer’s judgment over a doctors?
Does anyone know any examples of expert systems used in everyday life?
Spring 2012
Anita Johri - INFS 401

9. Where are Expert System used?
Aircraft accident investigations- GP1020 Computer Tool
Robotic surgeries. more than 300 surgeries done.
Scientist use Robots in space research/ or radioactive places where its not safe for humans to go.
Interactive games : Chess, Wii
Saya : Taking tech classes.
(surprise, fear, disgust, anger,
happiness and sadness)
Triage – Medical Diagnosis (Medical Expert System)
Patriot Missile Guidance System
Radar identifies Scud missile
System steers Patriot missile to intercepts Scud missile
Laws of physics, expert knowledge about missile trajectory is captured in the system
Spring 2012
Anita Johri - INFS 401

10. DSS Expert Systems Facilitates decision making
Unstructured environment
Alternatives may not be fully realized yet
Extract or gain knowledge from a computer system
Use goals and the system data to establish alternatives and outcomes, so a good decision can be made
Automate decision making.
The decision environments have structure
The alternatives and goals are often established in advance.
Inject expert knowledge in to a computer system.
The expert system can eventually replace the human decision maker.
Spring 2012
Anita Johri - INFS 401

11. References:
Spring 2012
Anita Johri - INFS 401