Applying Centrality Measures to a Model

  1. Click the Manage icon to access the Graph Management dialog box.
  2. Click the graph you want to measure centrality for.
  3. Click Algorithms...
  4. Select the kind of centrality measure you want to apply to your graph. This number denotes the element's significance; the higher the value, the more important the element.
    • Betweenness—Reflects the number of shortest paths between one node and other nodes.
    • Closeness—Reflects the length of geodesic distances between one node and other nodes.
    • Degree—Reflects the number of edges on a node.
    • Influence—Reflects the importance of a node, based on its connections to high-scoring nodes.
  5. Select the direction in which you want to apply the algorithm:
    • Incoming—The results will be based on edges coming into the node.
    • Outgoing—The results will be based on edges going out of the node.
    • Both—The results will be based on edges both coming into and going out of the node.
  6. If you are using an Influence algorithm, slide the Precision scale to determine how precise the results should be. A lower precision will return more accurate results, but the algorithm will run more slowly.
  7. If you are using a Closeness algorithm, click the appropriate button for the method of :
    • Standard—Results are based on the number of attachments, or edges, a node has as well as the reverse of the sum of shortest paths to each node.
    • Dangalchev—Results are based on not only the number of nodes linked to another node but also the number of edges in each of the linked nodes.
    • Opsahl—Results are based on the sum of reversed shortest paths to each node.
  8. Click the Use edge property as weight if you want to measure how unfavorable an edge is, and select the edge property you want to use from the Property drop-down. In this case, a higher value indicates a negative association.
  9. Click the Larger values are closer box if...
  10. Click the Override default output property name if... and select the Property drop-down.
  11. Click OK.
  12. Click the Jobs tab if you want to view job details after running the algorithm. It will provide the job ID, the graph name, the algorithm used, the status of the job, the start time, and the end time.