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MYCIN: Medical system for diagnosing blood disorders. First used in 1979
DESIGN ADVISOR: Gives advice to designers of processor chips
Applications of Expert Systems
The knowledge base is the collection of facts and rules which describe all the knowledge about the problem domain The inference engine is the part of the system that chooses which facts and rules to apply when trying to solve the user’s query The user interface is the part of the system which takes in the user’s query in a readable form and passes it to the inference engine. It then displays the results to the user.
谢谢你的阅读
知识就是财富 丰富你的人生
源自文库
谢谢
Expert Systems on the Web
aiinc.ca/demos/whale.html vanguardsw/ decisionscript/examples.htm exsys/demomain.html expertise2go/webesie/car expertise2go/webesie/wine
Problems with Expert Systems
Limited domain Systems are not always up to date, and don’t learn No “common sense” Experts needed to setup and maintain system
Expert Systems
An expert system is a computer program that is designed to hold the accumulated knowledge of one or more domain experts
Applications of Expert Systems
Why use Expert Systems?
Experts are not always available. An expert system can be used anywhere, any time. Human experts are not 100% reliable or consistent Experts may not be good at explaining decisions Cost effective
Legal and Ethical Issues
Who is responsible if the advice is wrong?
The user? The domain expert? The knowledge engineer? The programmer of the expert system shell? The company selling the software?
DENDRAL: Used to identify the structure of chemical compounds.
First used in 1965
LITHIAN: Gives advice to archaeologists
examining stone tools
Components of an Expert System
PUFF: Medical system for diagnosis of respiratory conditions
PROSPECTOR: Used by geologists to identify sites for
drilling or mining
Applications of Expert Systems
DESIGN ADVISOR: Gives advice to designers of processor chips
Applications of Expert Systems
The knowledge base is the collection of facts and rules which describe all the knowledge about the problem domain The inference engine is the part of the system that chooses which facts and rules to apply when trying to solve the user’s query The user interface is the part of the system which takes in the user’s query in a readable form and passes it to the inference engine. It then displays the results to the user.
谢谢你的阅读
知识就是财富 丰富你的人生
源自文库
谢谢
Expert Systems on the Web
aiinc.ca/demos/whale.html vanguardsw/ decisionscript/examples.htm exsys/demomain.html expertise2go/webesie/car expertise2go/webesie/wine
Problems with Expert Systems
Limited domain Systems are not always up to date, and don’t learn No “common sense” Experts needed to setup and maintain system
Expert Systems
An expert system is a computer program that is designed to hold the accumulated knowledge of one or more domain experts
Applications of Expert Systems
Why use Expert Systems?
Experts are not always available. An expert system can be used anywhere, any time. Human experts are not 100% reliable or consistent Experts may not be good at explaining decisions Cost effective
Legal and Ethical Issues
Who is responsible if the advice is wrong?
The user? The domain expert? The knowledge engineer? The programmer of the expert system shell? The company selling the software?
DENDRAL: Used to identify the structure of chemical compounds.
First used in 1965
LITHIAN: Gives advice to archaeologists
examining stone tools
Components of an Expert System
PUFF: Medical system for diagnosis of respiratory conditions
PROSPECTOR: Used by geologists to identify sites for
drilling or mining
Applications of Expert Systems