evalMetrics {Orcs} | R Documentation |
Compute selected evaluation metrics for binary (i.e. two-class) confusion matrices.
evalMetrics(mat, type = c("accuracy", "precision", "recall"))
mat |
Binary confusion |
type |
Target evaluation metric as |
A single numeric
.
Florian Detsch
University of Michigan (2017) Applied Machine Learning in Python. Available online: https://www.coursera.org/learn/python-machine-learning/home/welcome.
in1 = matrix(c(96, 4, 8, 19), nc = 2L, byrow = TRUE)
rownames(in1) = c("Condition Positive", "Condition Negative")
colnames(in1) = c("Predicted Positive", "Predicted Negative")
evalMetrics(in1) # default: "accuracy"
evalMetrics(in1, "precision")
evalMetrics(in1, "recall")
in2 = matrix(c(26, 17, 7, 400), nc = 2, byrow = TRUE)
evalMetrics(in2, "precision")
evalMetrics(in2, "recall")