openintro (version 2.0.0)

photo_classify: Photo classifications: fashion or not

Description

This is a simulated data set for photo classifications based on a machine learning algorithm versus what the true classification is for those photos. While the data are not real, they resemble performance that would be reasonable to expect in a well-built classifier.

Usage

photo_classify

Format

A data frame with 1822 observations on the following 2 variables.

mach_learn

The prediction by the machine learning system as to whether the photo is about fashion or not.

truth

The actual classification of the photo by a team of humans.

Details

The hypothetical ML algorithm has a precision of 90%, meaning of those photos it claims are fashion, about 90% of them are actually about fashion. The recall of the ML algorithm is about 64%, meaning of the photos that are about fashion, it correctly predicts that they are about fashion about 64% of the time.

Examples

# NOT RUN {
data(photo_classify)
table(photo_classify)

# }