Expert systems from rk

Expert systems M.S.Rama krishna (0458-703 )

Definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Components of an Expert System (1) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Components of an Expert System(2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

INFERENCE ENGINE EXPERT KNOWLEDGE ARCHITECTURE OF SIMPLE EXPERT SYSTEM EXPERT KNOWLEDGE USER KNOWLEDGE BASE KNOWLEDEGE BASE ACQUITION FACILITY EXPLANATION FACILITY USER INTERFACE

Expert systems /Rule Based systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],antecedent or premise, consequent(or) conclusion. uent

Main Participants in Expert Systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Domain expert Knowledge engineer Knowledge user EXPERT SYSTEM

Knowledge Acquisition Facility ,[object Object],[object Object],Joe Expert KNOWLEDGE BASE KNOWLEDGE ACQUITION FACILITY

Methods used in the Expert system ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],A B B E D C Rule 3 E D C B B A

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

Expert Systems Development Determining requirements Identifying experts Construct expert system components Implementing results Maintaining and reviewing system ,[object Object],[object Object]

Loan application ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Applications of Expert Systems DENDRAL: Used to identify the structure of chemical compounds. First used in 1965 MYCIN: Medical system for diagnosing blood disorders. First used in 1979

Applications of Expert Systems PROSPECTOR: Used by geologists to identify sites for drilling or mining PUFF: Medical system for diagnosis of respiratory conditions

Applications of Expert Systems LITHIAN: Gives advice to archaeologists examining stone tools DESIGN ADVISOR: Gives advice to designers of processor chips

Evolution of Expert Systems Software ,[object Object],[object Object],Ease of use low high Before 1980 1980s 1990s Traditional programming languages Special and 4 th generation languages Expert system shells

Need for expert systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Expert System Limitations ,[object Object],[object Object],[object Object],[object Object],[object Object]

Advantages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Problems with expert system ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

History ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

“ A Hangover From AI Winter" ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Conclusion ,[object Object],[object Object]

References: ,[object Object],[object Object],[object Object],[object Object]

Expert systems from rk

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