Expert Systems
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Transcript of Expert Systems
Artificial Intelligence and Expert Systems
By: Kate Festa
How is AI really used?
How can we benefit both today and in the future?
What are the Strengths and Weaknesses?
Let’s go!
What is Artificial Intelligence?
Simple enough?
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Rosie can…
Walk
TalkCare for children
Clean
Think independently
Use emotion (relatively)
We have ourselves a conundrum…
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"The aim of Artificial Intelligence is to create intelligent machines and through this, to understand the
principles of intelligence. At the moment, we can settle for creating less stupid machines.”
-John L. Gordon
“Artificial intelligence is that attempt to make computers do what they do in movies”
-Astro Teller
Two Distinct Ideas
1. Using computers to simulate human mental processes
2. Using computers to think
independently of the way people think
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So what’s an expert system anyway?
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Applications
Medicine
Chemistry
GeologyMeteorology
Computer Systems
1. Do not require common sense to solve
2. Are generally well understood
3. Can be described objectively
4. Human expertise is often scarce
5. Expertise is needed in a variety of locations
6. There are considerable advantages in reaching an overall answer quickly
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An analogy
The Knowledge Base: The Library
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The Knowledge Engineer: The Real Brain
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The Interference Engine: The Logic
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Human Interference: The Necessity
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Decision Support
Don’t trust a machine to make a full decision?
Can’t remember everything and need a little help?
Want to be reminded of situations to consider?
…decision support is for you!
Decision Making
Are you unfamiliar with a particular area?
Don’t want to hire a real expert?
Don’t want an industrial disaster?
…a decision making system is for you!
Have smaller decisions to make?
Human or Expert System??
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IF the infection is a primary bacteremia
AND the site of the culture is a sterile site
AND the suspected portal of entry is the gastrointestinal tract
THEN there is suggestive evidence (.7) that the infection is bacterioid
Advantages
Permanent expertiseExpertise easily reproduced
Consistent Results
Can hold significant amounts of information
Inexpensive
Consider transactions that humans overlook
Disadvantages
Lack of human common sense
Difficult to promote creative responses
Cannot explain logic
No response
Lack of flexibility
People and Machines
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Reliability
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Thanks for listening : )