Errata for Cambridge Algorithmica's Website

Errata for Cambridge Algorithmica's Website

This webpage provides corrections to substantive documents found on the website, where the document has been published elsewhere, copies might have been taken or there is other good reason not to edit the original document in situ.

24th October 2004.  There was a publishing error in the HTML version of Potential Security Weakness with Biometric Match-on-Card on the Biometrics page.  When this technical paper was originally posted to this website, which was on 23rd October, the HTML version did not contain the footnotes;  there are 23 footnotes in total, providing clarification and caveats on interpretation.  A corrected HTML version has now been posted, with all footnotes available.  [Note.  This problem did not affect the publication in RTF, Postscript and PDF formats.]

12th October 2004.  There is a technical error in the Presentation on Multi-Modal Biometric Combination (PDF) on the  Biometrics page.  On slide 17, it is stated that the transformed threshold should be zero at the Equal Error Rate (EER) point; this is incorrect.  The transformed threshold is zero at the crossover of the non-cummulative PDFs, as shown with untransformed scores in slide 15, and not at the EER, which is the crossover of the cummulative PDFs.





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