Expert Systems
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Transcript of Expert Systems
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Artificial Intelligence and Expert Systems
By: Kate Festa
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How is AI really used?
How can we benefit both today and in the future?
What are the Strengths and Weaknesses?
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Let’s go!
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What is Artificial Intelligence?
Simple enough?
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Rosie can…
Walk
TalkCare for children
Clean
Think independently
Use emotion (relatively)
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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
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“Artificial intelligence is that attempt to make computers do what they do in movies”
-Astro Teller
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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
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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
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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!
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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?
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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
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Advantages
Permanent expertiseExpertise easily reproduced
Consistent Results
Can hold significant amounts of information
Inexpensive
Consider transactions that humans overlook
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Disadvantages
Lack of human common sense
Difficult to promote creative responses
Cannot explain logic
No response
Lack of flexibility
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People and Machines
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Reliability
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Thanks for listening : )