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Dss vs expert system

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DSS vs Expert system presentation

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Dss vs expert system

  1. 1. DSS Vs Expert System By Anita Johri INFS 401 Spring 2012
  2. 2. What is DSS?• Helps is decision making when trying to figure out solution for a non structured decision. Focuses on problems that are unique, non routine & rapidly changing.Spring 2012 Anita Johri - INFS 401 2
  3. 3. 3 Components of DSS: • Model Management • Data Management • User Interface ManagementSpring 2012 Anita Johri - INFS 401 3
  4. 4. Examples…of DSS:Spring 2012 Anita Johri - INFS 401 4
  5. 5. What is Expert System?• Major roles of individuals who interact with the system – Domain expert – Knowledge engineer – User• The major components are: • Knowledge base • Working storage • Inference engine • User interface Spring 2012 Anita Johri - INFS 401 5
  6. 6. Problems in developing an ES: 1. The expert is unable to communicate his/her ideas 2. The expert is unwilling to communicate his/her ideas 3. The expert is not available 4. Can all the testing be accomplished? 5. User acceptance Disadvantages of Rule-Based Expert Systems 1. Common sense 2. Creativity 3. Learning 4. Sensory Experience 5. DegradationSpring 2012 Anita Johri - INFS 401 6
  7. 7. Advantages of ES • Availability • Cheaper • Reduced danger • Permanence • Multiple expertise • Explanation • Fast response • Unemotional and response at all timesSpring 2012 Anita Johri - INFS 401 7
  8. 8. Ethical implications: Do you want to put a decision about your life in the hands of a computer? When do you think you’d trust a computer’s judgment over a doctors? Does anyone know any examples of expert systems used in everyday life? Spring 2012 Anita Johri - INFS 401 8
  9. 9. Where are Expert System used?• Aircraft accident investigations- GP1020 Computer Tool• Robotic surgeries. more than 300 surgeries done.• Scientist use Robots in space research/ or radioactive places where its not safe for humans to go.• Interactive games : Chess, Wii• Saya : Taking tech classes.(surprise, fear, disgust, anger,happiness and sadness)• Triage – Medical Diagnosis (Medical Expert System)• Patriot Missile Guidance System – Radar identifies Scud missile – System steers Patriot missile to intercepts Scud missile – Laws of physics, expert knowledge about missile trajectory is captured in the systemSpring 2012 Anita Johri - INFS 401 9
  10. 10. DSS Expert Systems • Facilitates decision making • Automate decision making. • Unstructured environment • The decision environments have structure • Alternatives may not be fully • The alternatives and goals are realized yet often established in advance. • Extract or gain knowledge from a • Inject expert knowledge in to a computer system computer system. • Use goals and the system data to • The expert system can eventually establish alternatives and replace the human decision maker. outcomes, so a good decision can be madeSpring 2012 Anita Johri - INFS 401 10
  11. 11. References: http://worldacademyonline.com/article/25/367/dss_applications.html http://www.tech-faq.com/decision-support-system.html http://wiki.answers.com/Q/Different_between_expert_system_and_de cision_support_system http://en.wikipedia.org/wiki/Decision_support_system www.google.comSpring 2012 Anita Johri - INFS 401 11

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