Pairwise frequency count from an incidence matrix of group membership
Shafique, M. (UNU-MERIT)
kmshafique at yahoo.com
Fri Apr 22 06:36:45 EDT 2011
I have a number of different groups g1, g2, … g100 in my data. Each group is
comprised of a known but different set of members (m1, m2, …m1000) from the
population. The data has been organized in an incidence matrix:
I need to count how many groups each possible pair of members share (i.e., both
are member of).
I shall prefer the result in a pairwise edgelist with weight/frequency in a
format like the following:
m1, m1, 4
m1, m2, 1
m1, m3, 2
m1, m4, 3
m1, m5, 1
m2, m2, 2
... and so on.
I shall highly appreciate if anybody could suggest/share some code/tool/module
which could help do this.
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