Question

1. Suppose a biometric system captures all fingers of two hands for the successful authentication. Due to a noisy situation, it detects 8 fingers in total which 7 are correct and one finger doesn’t match a real finger. What are the true positive, false positive, and false negative values for this scenario?

Answer 1

TRUE POSITIVE :

           True Positive Means Result is True when Situation is True

          for above scenario :

   Biometric System detects 8 fingers in total which 7 are correct .so

                 the value is --> 7        (because we got 7 are correct)                 

FALSE POSITIVE :

           False Positive Means Result is True even Situation is False

         for above scenario:

               Biometric System detects 8 fingers in total which 7 are correct and one finger doesn’t match a               real finger

               so 1 finger doesn't match with real finger even it is wrong but tell the correct thing(doesn't match)

           value is --> 1

FALSE NEGATIVE :

           False Negative means Result is False when Situation is False

        for above scenario :

in problem statement the, biometric system captures all fingers of two hands for the                             Successful authentication    Due to a noisy situation, it detects 8 fingers, means it didn't detect 2 fingers and it didn't give any statement for this like match, doesn't match with fingers

               so  

                value is --> 2