This sample
is similar to the previous sample but contains less data and is easier
to examine. For this sample, the node data is generated from the link
data set.
This sample
uses the following files:
The following
table summarizes the variables in the link data set:
Link Variables for the Credit Card Fraud Sample
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Serves as the
From variable that originates the link.
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A value that
identifies every transaction.
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Serves as the
To variable that terminates the link.
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Indicates whether
the transaction is fraudulent (1) or not fraudulent (0). This variable
also determines link colors.
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SAS/GRAPH
Network Visualization Workshop generates the node data from the link
data. The following table summarizes the variables in the node data
set.
Node Variables for the Credit Card Fraud Sample
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Serves as the
Node ID variable that identifies all customers and merchants.
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Determines the
text that appears when you apply a label to nodes in a network graph.
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In Arcs; Out
Arcs; Total Arcs
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Created by SAS/GRAPH
Network Visualization Workshop to keep track of the links that are
associated with each node.
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Here are
suggestions for exploring this data:
-
Open the
project. The project loads the two data sets and opens a hierarchical
network graph.
-
Use the
label tool to identify customers and merchants in the graph. Observe
that the fraudulent transactions correspond to different customers
that have transactions with a common merchant.
Although
this approach is not proof of fraud, it identifies specific merchants
that had access to customer credit card numbers that have fraudulent
transactions associated with them. These merchants warrant further
investigation.