How to Troubleshoot Apps for the Modern Connected Worker
Expert system mycin
1.
2. •In 1965 DENDRAL was
used in expert system
•MYCIN was developed in
1976
3. WHY MYCIN
Disease diagnosis and therapy selection
Advise for non expert physicians with time
consideration and incomplete evidence as
Bacterial infections of the blood
Extended to other elements
4. PROBLEM BEFORE MYCIN
• ROBERTS AND VISCONTI:-
Only 13% patients are treated rationally
66% are being given irrational treatment
21% are being given questionable treatment
• IRRATIONAL MEANS, FOR EXAMPLE: Using a contra-indicated combination
Using the wrong agent for a specific organisms
Not taking the required culture
5. DEVELOPMENT OF MYCIN
• Developed by ADWARD SHORTLIFFE in 1976
a STANFORD UNIVERSITY in the artificial intelligence
in medicine group
• First system that was implemented into the medical
field
6. HOW MYCIN WAS TESTED FOR
ACCURACY
• 10 patients for a particular disease were chosen
• Their information was sent to 8 physicians and MYCIN
• All then came up with recommended treatment
• Those recommendations along with what the patient
actually received as treatment was sent to 8
unidentified specialists
7. WHO WON FROM THE TEST
• MYCIN won the test
• MYCIN received the highest score as for as
accuracy and effectiveness of diagnosis
8. STAGES IN DAIGNOSIS AND
TREATMENT
• Decide if there is significant infection
• Identify the causing organism(s) by clinical and
laboratory evidence
• Decide what antibiotic agent the organisms are
sensitive to
• Prescribe the optimal drug combination for particular
case
9. RESULTS
Never implemented for routine clinical use
Shown to be competent by panels of experts even in
case where experts themselves disagreed on
conclusions
Key contributions
Reuse of production rules( expansion knowledge aquision )
10. PROBLEMS
• If the system gives an incorrect diagnosis, who is
to be blamed or sued
• Physicians rely to heavily on system instead of
consulting other experts
11. Resources
Wikipedia Page
Building Expert Systems in Prolog
Available at: http://www.amzi.com/ExpertSystemsInProlog/xsipfrtop.htm
Artificial Intelligence - A modern Approach by Stuart Rassell, Peter
Norvig
PC AI – Expert Systems
Available at: http://en.wikipedia.org/wiki/Expert_system
Available at: http://www.pcai.com/web/ai_info/expert_systems.html
VisiRule Web Demos (A simple example):
http://www.lpa.co.uk/vrs_dem.htm
