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package Chapter4.util;
import edu.uci.ics.jung.algorithms.scoring.VertexScorer;
import edu.uci.ics.jung.graph.Hypergraph;
/**
* This is a Jung Node Scorer that computes the
* In-Degree Centrality of nodes.
*/
public class InDegreeScorer<T> implements VertexScorer<T, Double>{
//The graph representation in JUNG.
private Hypergraph<T, ?> graph;
/**
* Initialize the graph scorer.
* @param graph
* The graph we wish to score.
*/
public InDegreeScorer(Hypergraph<T, ?> graph){
this.graph = graph;
}
/**
* @return The In-Degree Centrality of the vertex.
*/
public Double getVertexScore(T node) {
return (double) graph.getInEdges(node).size();
}
}
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