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MathGroup Archive 2009

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Definition of the similarity in a set of integers

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96380] Definition of the similarity in a set of integers
  • From: Ryan Markley <overgeo at gmail.com>
  • Date: Thu, 12 Feb 2009 06:40:42 -0500 (EST)

Hello I have two sets of integers eg

S1 = (25,14,32,45) and S2 = (26,12,31,48)

I want to define an operation similar to the variance that give me how
similar both sets are, for example in the above example for both sets
the results I have to get need to be similar because both sets are
similar.

The problem with the variance is this

S1 = (25,1,1,1) and S2 = (1,1,25,1) these two sets have the same
variance but they are completly different. What mathematical operation
can I use to do what I am looking for.

Thanks a lot in advance.


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