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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are needed to see this picture.









Rosie can…

Walk

TalkCare for children

Clean

Think independently

Use emotion (relatively)

We have ourselves a conundrum…



"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







So what’s an expert system anyway?



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





An analogy

The Knowledge Base: The Library



The Knowledge Engineer: The Real Brain



The Interference Engine: The Logic



Human Interference: The Necessity



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??





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



Reliability



Thanks for listening : )

Technology

Expert Systems