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Table 2 Connectivity Matrix of Transaction Graph T1. Each column represents an account vertex. Each row represents a company vertex. Numbers are the number of time a transaction created an edge between the two vertices

From: GraphSIF: analyzing flow of payments in a Business-to-Business network to detect supplier impersonation

  A1 A2 A3 A4 A5 A6 A7
C1 1 1 1 1 1 1 0
S1 1 0 0 0 0 1 1
S2 0 1 0 0 0 0 0
S3 0 0 1 0 0 0 0
S4 0 0 1 1 0 0 0
S5 0 0 0 1 0 0 0
S6 0 0 0 0 1 0 0