Example usage for org.apache.lucene.search.similarities IBSimilarity getDistribution

Introduction

In this page you can find the example usage for org.apache.lucene.search.similarities IBSimilarity getDistribution.

Prototype

public Distribution getDistribution() 

Source Link

Document

Returns the distribution

Usage

From source file:org.apache.solr.search.similarities.TestIBSimilarityFactory.java

License:Apache License

/** spl/df/h2 with default parameters */
public void test() throws Exception {
    Similarity sim = getSimilarity("text");
    assertEquals(IBSimilarity.class, sim.getClass());
    IBSimilarity ib = (IBSimilarity) sim;
    assertEquals(DistributionSPL.class, ib.getDistribution().getClass());
    assertEquals(LambdaDF.class, ib.getLambda().getClass());
    assertEquals(NormalizationH2.class, ib.getNormalization().getClass());
}

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From source file:org.apache.solr.search.similarities.TestIBSimilarityFactory.java

License:Apache License

/** ll/ttf/h3 with parameterized normalization */
public void testParameters() throws Exception {
    Similarity sim = getSimilarity("text_params");
    assertEquals(IBSimilarity.class, sim.getClass());
    IBSimilarity ib = (IBSimilarity) sim;
    assertEquals(DistributionLL.class, ib.getDistribution().getClass());
    assertEquals(LambdaTTF.class, ib.getLambda().getClass());
    assertEquals(NormalizationH3.class, ib.getNormalization().getClass());
    NormalizationH3 norm = (NormalizationH3) ib.getNormalization();
    assertEquals(900f, norm.getMu(), 0.01f);
}

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From source file:org.elasticsearch.index.similarity.SimilarityTests.java

License:Apache License

@Test
public void testResolveSimilaritiesFromMapping_IB() throws IOException {
    String mapping = XContentFactory.jsonBuilder().startObject().startObject("type").startObject("properties")
            .startObject("field1").field("type", "string").field("similarity", "my_similarity").endObject()
            .endObject().endObject().endObject().string();

    Settings indexSettings = ImmutableSettings.settingsBuilder()
            .put("index.similarity.my_similarity.type", "IB")
            .put("index.similarity.my_similarity.distribution", "spl")
            .put("index.similarity.my_similarity.lambda", "ttf")
            .put("index.similarity.my_similarity.normalization", "h2")
            .put("index.similarity.my_similarity.normalization.h2.c", 3f).build();
    SimilarityService similarityService = similarityService(indexSettings);
    DocumentMapper documentMapper = similarityService.mapperService().documentMapperParser().parse(mapping);
    assertThat(documentMapper.mappers().name("field1").mapper().similarity(),
            instanceOf(IBSimilarityProvider.class));

    IBSimilarity similarity = (IBSimilarity) documentMapper.mappers().name("field1").mapper().similarity()
            .get();/*  w w  w.j  a  va 2s  .c  o  m*/
    assertThat(similarity.getDistribution(), instanceOf(DistributionSPL.class));
    assertThat(similarity.getLambda(), instanceOf(LambdaTTF.class));
    assertThat(similarity.getNormalization(), instanceOf(NormalizationH2.class));
    assertThat(((NormalizationH2) similarity.getNormalization()).getC(), equalTo(3f));
}

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