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roc plot

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x 2011-9-23
area = roc(fileName,exp)
%
% fileName: The name of the output file. It is an image
% exp: a structure representing an experiment with three fields
% - exp.name: a string specifying the experiment name
% - exp.positive_n: the number of positive samples in the experiment
% - exp.likelihoods: likelihoods of each sample where the first
% exp.positive_n number of likelihoods belongs to the positive
% samples while others belong to the negative samples.
% area: a 1x1-dimensional cell array of the area under the roc curve.
true positive,false positive values of ground truth,edge detected image was calculated...then how apply these values to roc program...??????

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