Tools for Normalized DCF Curves

Here are some MATLAB tools to plot NIST's SRE decision cost function (DCF) as a function of the target prior. 

These tools can be used to examine and compare, over a range of operating points:
  • the discrimination of detector scores with minimum DCF,  
  • and the calibration of detector scores in log-likelihood-ratio form, with actual DCF.
Install the code on your MATLAB path and type any of the following for more information:
> help normDCF_plot
> help fast_minDCF  
> help fast_actDCF  

or type
> normDCF_plot 
to generate a few demo plots.


ċ
fast_normDCF.zip
(7k)
Niko Brummer,
Mar 18, 2010, 2:58 AM