InverseDegreeUpdateNormalization extends RelatedTweetUpdateNormalization { @Override public double computeScoreNormalization(double cooccurrence, int similarNodeDegree, int nodeDegree) { return 1.0; }  @Override double computeLeftNeighborContribution(int leftNodeDegree); @Override double computeScoreNormalization(double cooccurrence, int similarNodeDegree,
      int nodeDegree);  }
@Test public void testComputeScoreNormalization() { InverseDegreeUpdateNormalization inverseDegreeUpdateNormalization = new InverseDegreeUpdateNormalization(); assertEquals(1.0, inverseDegreeUpdateNormalization.computeScoreNormalization(2.0, 2, 4), 0.01); }