@Test
public void ピアソンの相関係数() {
Critics critics = new Critics();
SimilarityCalculator calculator = new PearsonCorrelationCalculator();
Double expected = 0.396059017191;
Double actual =
calculator.calc(critics.of(Persons.LISA_ROSE), critics.of(Persons.GENE_SEYMOUR));
assertTrue(Math.abs(expected - actual) < 0.0001);
}
@Test
public void ユークリッド距離() {
Critics critics = new Critics();
SimilarityCalculator calculator = new EucridDistanceCalculator();
Double expected = 0.148148148148;
Double actual =
calculator.calc(critics.of(Persons.LISA_ROSE), critics.of(Persons.GENE_SEYMOUR));
assertTrue(Math.abs(expected - actual) < 0.0001);
}