Application of expert system

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Application of expert system

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Application of expert system

  1. 1. Expert SystemJisha.V Management Information System ©chintech
  2. 2. 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 effectiveJisha.V Management Information System ©chintech
  3. 3. When an expert system can be used: An expert system can be used if a) The problem cannot be specified in terms of a well defined algorithm. b) When the task is hazardous c) There is scarcity of experts in the area. d) The problem requires consistency and standardization. e) Human experts have successfully solved similar problems.Jisha.V Management Information System ©chintech
  4. 4. LITHIAN: Gives advice to archaeologists examining stone toolsJisha.V Management Information System ©chintech
  5. 5. DENDRAL: Used to identify the structure of chemical compounds. First used in 1965Jisha.V Management Information System ©chintech
  6. 6. An expert system can be defined as a knowledge based information systemthat uses the knowledge specific to an area or domain to act as a source of information to the users.Jisha.V Management Information System ©chintech
  7. 7. Characteristics of Expert System a)It is capable of handling challenging decision problems. b)It uses knowledge rather than data for solution. c) The knowledge is encoded and maintained separately.Jisha.V Management Information System ©chintech
  8. 8. Advantages a)It enhances decision quality. b) It reduces the cost of consulting experts for solving the problem. c) It provides quick and efficient solutions to problem. d) It offers high reliability. e) It can tackle very complex problem that are difficult for human experts to solve. f) It gathers scarce expertise and use it efficiently.Jisha.V Management Information System ©chintech
  9. 9. Disadvantages a) It is difficult to extract expertise from human experts and hence the knowledge base may not be complete. b) Each problem situation is different from problem to prblem. Hence, the solution suggested by human experts is bound to be different from expert system solution. c) The cost and time required for developing the expert system are very high. d) Large expert system are difficult to develop and maintain.Jisha.V Management Information System ©chintech

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