Mean absolute percentage error
Defined as the abs(truth_i - response_i) / truth_i. Won't work if any truth value is equal to zero. In this case the output will be NA.
MAPE(truth, response)
truth |
[numeric] vector of true values |
response |
[numeric] vector of predicted values |
n = 20 set.seed(123) truth = rnorm(n) response = rnorm(n) MAPE(truth, response)
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