PRROC (version 1.3.1)

PRROC-package: Compute and plot PR and ROC curves and the areas under the curves for weighted and unweighted data

Description

This package computes the areas under the precision-recall (PR) and receiver operating characteristics (ROC) curve for weighted (e.g., soft-labeled) and unweighted data. In contrast to other implementations, the interpolation between points of the PR curve is done by a non-linear piecewise function. In addition to the areas under the curves, the curves themselves can also be computed and plotted by a specific S3-method.

Details

Package:	PRROC
Type:	Package
Version:	1.3
Date:	2017-04-21
License:	GPL-3

References

J. Davis and M. Goadrich. The relationship between precision-recall and ROC curves. In Proceedings of the 23rd International Conference on Machine Learning, pages 233--240, New York, NY, USA, 2006. ACM.

T. Fawcett, An introduction to ROC analysis, Pattern Recognition Letters (27) 8, 861-874, 2006.

J. Keilwagen, I. Grosse, and J. Grau. Area under precision-recall curves for weighted and unweighted data, PLOS ONE (9) 3, 2014.

J. Grau, I. Grosse, and J. Keilwagen. PRROC: computing and visualizing precision-recall and receiver operating characteristic curves in R. Bioinformatics, 31(15):2595-2597, 2015.

See Also

pr.curve

roc.curve

plot.PRROC

print.PRROC

Examples

# NOT RUN {
# create artificial scores as random numbers
x <- rnorm( 1000 );
y <- rnorm( 1000, -1 );

# compute area under PR curve
pr <- pr.curve( x, y );
print( pr );

# compute area under ROC curve
roc <- roc.curve( x, y );
print( roc );

# compute PR curve and area under curve
pr <- pr.curve( x, y, curve = TRUE );
# plot curve
plot(pr);

# compute ROC curve and area under curve
roc <- roc.curve( x, y, curve = TRUE );
# plot curve
plot(roc);

# create artificial weights
x.weights <- runif( 1000 );
y.weights <- runif( 1000 );

# compute PR curve and area under curve
pr <- pr.curve( x, y, x.weights, y.weights, curve = TRUE );
# plot curve
plot(pr);

# compute ROC curve and area under curve
roc <- roc.curve( x, y, x.weights, y.weights, curve = TRUE );
# plot curve
plot(roc);
# }