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# Copyright (C) 2012 - 2021 Reza Mohammadi |
# |
# This file is part of BDgraph package. |
# |
# BDgraph is free software: you can redistribute it and/or modify it under |
# the terms of the GNU General Public License as published by the Free |
# Software Foundation; see <https://cran.r-project.org/web/licenses/GPL-3>.|
# |
# Maintainer: Reza Mohammadi <a.mohammadi@uva.nl> |
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# Reports the measures to assess the performance of estimated graphs |
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auc = function( pred, actual, cut = 200, calibrate = TRUE )
{
if( !inherits( pred, "list" ) )
pred = list( pred )
length_pred = length( pred )
if( !is.vector( actual ) )
{
adj_G = BDgraph::get_graph( actual )
actual = adj_G[ upper.tri( adj_G ) ]
}
if( ( sum( actual == 0 ) + sum( actual == 1 ) ) != length( actual ) )
stop( "Elements of 'actual' must be 0 or 1" )
auc_value = vector()
for( i in 1:length_pred )
{
output_tp_fp = compute_tp_fp( pred = pred[[i]], actual = actual, cut = cut, smooth = FALSE, calibrate = calibrate )
fp = output_tp_fp $ fp
tp = output_tp_fp $ tp
diffs_x = fp[ -length( fp ) ] - fp[ -1 ]
means_vert = ( tp[ -1 ] + tp[ -length( tp ) ] ) / 2
auc_value = c( auc_value, sum( means_vert * diffs_x ) )
}
return( auc_value )
}
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