I am attempting to cluster a large amount of pair-wise data that represent coordinates in a symmetrical matrix where each element in the matrix represents a “similarity” value between the two data pairs. I have to cluster the data when the value is greater than 60.

Lets pretend there are 10 pieces of data (0 through 9). So, the matrix would have 100 elements. I already wrote a program that extracts the coordinates and corresponding values of the matrix when this value is greater than 60. Since the matrix is symmetrical, I only extracted values when Y > X.

X Y Value
0 1 70
0 2 80
1 2 60
1 5 90
2 3 100
6 7 90
7 8 100

So, cluster #1 will be 0,1,2,3,5.

cluster #2 will be 6,7,8

Then I will add in later …

cluster #3 will be 4

cluster #4 will be 9

I am weak on passing information to and from subroutines.

I would like for the data to be in this data structure. 

$cluster_60[$cluster_element]{$cluster_key}

[download]

So, 

$cluster_60[4]{1} = 5

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$cluster_60[0]{3} = 4

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$cluster_60[1]{2} = 8

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I would like to be able to access 5 by simply writing outside of the subroutine 

$cluster_60[4]{1}.

[download]

Please help me, Perl Monks! Thanks, Clayton

In reply to Pair-Wise Clustering by cutcopy11

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