F1: F1 measure

In measures: Performance Measures for Statistical Learning

Description

Defined as: 2 * tp/ (sum(truth == positive) + sum(response == positive))

Usage

F1(truth, response, positive)

Arguments

truth	vector of true values
response	vector of predicted values
positive	positive class

Examples

n = 20
set.seed(125)
truth = as.factor(sample(c(1,0), n, replace = TRUE))
probabilities = runif(n)
response = as.factor(as.numeric(probabilities > 0.5))
positive = 1
F1(truth, response, positive)

Example output

[1] 0.4

measures documentation built on Jan. 19, 2021, 5:08 p.m.