|
|
|
|
|
|
by DoctorOetker
2793 days ago
|
|
|
I am not correcting you, but simply illustrating how 85% accuracy tells us very little... Let's make the spherical cow approximation that "a lie" is a fully defined concept, then we have 4 conditional (bayesian) probabilities: P( "sincere" | sincere) The probability a sincere person is reported as "sincere". P( "lying" | sincere) The probability a sincere person is reported as "lying". P( "sincere" | lying) The probability a lying person is reported as "sincere". P( "lying" | lying) The probability a lying person is reported as "lying". The first 2 probabilities should sum to 1, and the latter 2 possibilities too, so we have 4-2 = 2 degrees of freedom. A reported "accuracy" tells us nothing without knowing the distribution of liars and sincere people in the test group.. |
|
|