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February 16th, 2018, 03:13 PM  #1 
Newbie Joined: Oct 2013 Posts: 20 Thanks: 0  Two histograms correlation
I have histogram of even and odd bytes. for example: 227: 40 131: 20 130: 11 129: 8 188: 5 128: 4 171: 4 227: 39 131: 20 130: 11 129: 9 128: 5 188: 5 171: 4 What is probability that all 256 variables is the same on both histograms? Derivation: We have coin with 0 and 1. First we have 2*0 + 8 *1, in second 6*0 + 4*1 Hypothesis is average P(0)=0.4, P(1)=0.6 Now we must compute all going to less probability? PA = P(2,8 )+P(1,9)+P(0,10) and second PB = P(6,4)+P(7,3)+P(8,2)+P(9,1)+P(10,0) and next P= PA * PB ? (but this means that maximal = 1/4?) Situation complicated is coin has three values: 0,1 and 2 First: (3,2,5) second (1,6,3)>P(0)=0.2, P(1)=0.4, P(2)=0.4 We have triangle with (11*12)/2=66 fields. We must do two dimensional integral? For histogram we must do 255dimensional integral? Last edited by Borneq; February 16th, 2018 at 03:14 PM. Reason: disable smiling 

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