Package es.uam.eps.ir.relison.sna.metrics.distance.vertex

Class NodeBetweenness<U>

java.lang.Object
es.uam.eps.ir.relison.sna.metrics.distance.vertex.NodeBetweenness<U>
Type Parameters:
U - Type of the users.
All Implemented Interfaces:
VertexMetric<U>
public class NodeBetweenness<U>
extends java.lang.Object
implements VertexMetric<U>
Computes the betweenness of the nodes of a graph.

Reference: M.E.J. Newman, M. Girvan. Finding and evaluating community structure in networks. Physical Review E 69(2), pp. 1-16 (2004)

  • Field Summary

    Fields 
    Modifier and Type Field Description
    private DistanceCalculator<U> dc
    Distance calculator.
    private boolean normalize
    Indicates whether we have to normalize the value of the metric or not.

  • Constructor Summary

    Constructors 
    Constructor Description
    NodeBetweenness​(boolean normalize)
    Constructor.
    NodeBetweenness​(DistanceCalculator<U> dc, boolean normalize)
    Constructor.

  • Method Summary

    Modifier and Type Method Description
    double averageValue​(Graph<U> graph)
    Computes the average value of the metric in the graph.
    java.util.Map<U,​java.lang.Double> compute​(Graph<U> graph)
    Computes the value of the metric for all the users in the graph.
    double compute​(Graph<U> graph, U user)
    Computes the value of the metric for a single user.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface es.uam.eps.ir.relison.sna.metrics.VertexMetric

    averageValue, compute

  • Field Details

    • dc

      private final DistanceCalculator<U> dc
      Distance calculator.

    • normalize

      private final boolean normalize
      Indicates whether we have to normalize the value of the metric or not.

  • Constructor Details

    • NodeBetweenness

      public NodeBetweenness​(boolean normalize)
      Constructor.
      Parameters:
      normalize - true if we have to normalize the value of the metric, false otherwise.

    • NodeBetweenness

      public NodeBetweenness​(DistanceCalculator<U> dc, boolean normalize)
      Constructor.
      Parameters:
      dc - Distance calculator.
      normalize - true if we have to normalize the value of the metric, false otherwise.

  • Method Details

    • compute

      public double compute​(Graph<U> graph, U user)
      Description copied from interface: VertexMetric
      Computes the value of the metric for a single user.
      Specified by:
      compute in interface VertexMetric<U>
      Parameters:
      graph - The graph.
      user - The user to compute.
      Returns:
      the value of the metric.

    • compute

      public java.util.Map<U,​java.lang.Double> compute​(Graph<U> graph)
      Description copied from interface: VertexMetric
      Computes the value of the metric for all the users in the graph.
      Specified by:
      compute in interface VertexMetric<U>
      Parameters:
      graph - The graph.
      Returns:
      A map relating the users with the values of the metric.

    • averageValue

      public double averageValue​(Graph<U> graph)
      Description copied from interface: VertexMetric
      Computes the average value of the metric in the graph.
      Specified by:
      averageValue in interface VertexMetric<U>
      Parameters:
      graph - The graph.
      Returns:
      the average value of the metric.