Challenges in the real world use of classification accuracy metrics: From recall and precision to the Matthews correlation coefficient
Fig 2
Confusion matrices arising from the use of a gold standard reference, an imperfect reference with correlated errors (accuracy = 0.90) and an imperfect reference with independent errors (accuracy = 0.90).
(a) Prevalence = 0.1 and (b) Prevalence = 0.3.