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(Dempster's Rule) Cal and Brady are suspects in a murder. The only witness is Earl, who says that Cal did it. But Earl is notoriously unreliable; his judgments are correct only about half the time. Meanwhile, a second piece of evidence suggests that the murderer was left-handed, and thus points to Brady. An expert on DST, who has been called into the case, represents these pieces of evidence using the bpa's: ME({Cal})=0.5 me({Cal, Brady}) = 0.5 mL({Brady})= 0.25 mL({Cal, Brady}) = 0.75

(Dempster's Rule) Cal and Brady are suspects in a murder. The only witness is Earl, who says that Cal did it. But Earl is notoriously unreliable; his judgments are correct only about half the time. Meanwhile, a second piece of evidence suggests that the murderer was left-handed, and thus points to Brady. An expert on DST, who has been called into the case, represents these pieces of evidence using the bpa's: ME({Cal})=0.5 me({Cal, Brady}) = 0.5 mL({Brady})= 0.25 mL({Cal, Brady}) = 0.75

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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(Dempster's Rule) Cal and Brady are suspects in a murder. The only witness is Earl, who says that Cal did it. But Earl is notoriously unreliable; his judgments are correct only about half the time. Meanwhile, a second piece of evidence suggests that the murderer was left-handed, and thus points to Brady. An expert on DST, who has been called into the case, represents these pieces of evidence using the bpa's: ME({Cal})=0.5 ME({Cal, Brady}) = 0.5 mL({Brady}) = 0.25 mL({Cal, Brady}) = 0.75 Use Dempster's Rule to calculate the combined impact of the two pieces of evidence and state the evidential interval for Brady.
Transcribed Image Text:(Dempster's Rule) Cal and Brady are suspects in a murder. The only witness is Earl, who says that Cal did it. But Earl is notoriously unreliable; his judgments are correct only about half the time. Meanwhile, a second piece of evidence suggests that the murderer was left-handed, and thus points to Brady. An expert on DST, who has been called into the case, represents these pieces of evidence using the bpa's: ME({Cal})=0.5 ME({Cal, Brady}) = 0.5 mL({Brady}) = 0.25 mL({Cal, Brady}) = 0.75 Use Dempster's Rule to calculate the combined impact of the two pieces of evidence and state the evidential interval for Brady.
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