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[igraph] Summing over descendents

From: David Edwards
Subject: [igraph] Summing over descendents
Date: Wed, 9 Jan 2013 12:17:16 +0000

Dear all


Given a directed acyclic graph with a numeric vertex attribute, I would like to calculate the sum of the attributes over all descendents of a given vertex. Any suggestions for an efficient way to do this? The graph may be quite large.





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