Expert Systems

• What is an Expert System?
• combined knowledge of several human experts
• generate human like responses
• give reliable advice based on its limited domain
• Expert System asks questions, gives advice based on your responses
• can explain its reasoning (HOW and WHY)

Expert Systems Shells

• User Interface, Inference Engine NO KNOWLEDGE BASE

User Interface - displays questions and results to the user, take query from user

Inference Engine - comes to conclusions, generates questions, chooses which rules and the facts to search/apply to "fun oot" what you want

Knowledge Base - holds all the facts and rules about the domain

Uses

• NHS 24/7 - recommends health advice
• MYCIN - medical
• Legal advice
• Whale Watcher - identifying whales
• Chemical Analysis
• Manufaturing

Advantages

• available 24/7
• consistent results
• permanance
• doesnt need paid
• several experts knowledge

Disadvantages

• no common sense
• limited domain
• inflexability
• not personal
• cant learn
• needs experts to set up and maintain
• people experts may lose jobs

Knowledge Engineer and Domain Experts invovled in the creation of it