Enough to identify?

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Dan Perkins
Posts: 46
Joined: Fri Apr 18, 2008 5:39 am
Location: London

Enough to identify?

Post by Dan Perkins »

Is anyone aware of any research that has been done into how much, or how little ridge detail is required to identify?

thanks

Dan
Michele
Posts: 384
Joined: Tue Dec 06, 2005 10:40 am

Re: Enough to identify?

Post by Michele »

Dan,

That really depends on what information you’re using to make an ID. Some people quantify sufficiency just using Galton points (lots of statistical models on that) while others are using level 1, 2, and 3 details.

If you’re using them all, then it depends on how you define each detail (in addition to the quality, quantity, and rarity of each detail). Some people consider incipients to be level 2 details and others think they are level 3 details. If you consider incipient to be level 3 details then one could say that zero level two details are needed to establish identification. The best article on this is from JFI 53 (5), 2003 written by Rob Reneau.

Michele
Michele
The best way to escape from a problem is to solve it. Alan Saporta
There is nothing so useless as doing efficiently that which should not be done at all. Peter Drucker
(Applies to a full A prior to C and blind verification)
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