Package org.apache.lucene.search

Examples of org.apache.lucene.search.Explanation

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  }

  /** This method is no longer an official member of {@link Scorer},
   * but it is needed by SpanWeight to build an explanation. */
  protected Explanation explain(final int doc) throws IOException {
    Explanation tfExplanation = new Explanation();

    int expDoc = advance(doc);

    float phraseFreq = (expDoc == doc) ? freq : 0.0f;
    tfExplanation.setValue(getSimilarity().tf(phraseFreq));
    tfExplanation.setDescription("tf(phraseFreq=" + phraseFreq + ")");

    return tfExplanation;
  }
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        printHit(doc);
        if (showTokens) {
          invertDocument(doc);
        }
        if (explain) {
          Explanation exp = searcher.explain(query, hits[ii].doc);
          message("Explanation:" + exp.toString());
        }
      }
      message("#################################################");

      if (numHits > end) {
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    }
    float valSrcScore = 1;
    for (int i = 0; i < valSrcExpls.length; i++) {
      valSrcScore *= valSrcExpls[i].getValue();
    }
    Explanation exp = new Explanation( valSrcScore * subQueryExpl.getValue(), "custom score: product of:");
    exp.addDetail(subQueryExpl);
    for (int i = 0; i < valSrcExpls.length; i++) {
      exp.addDetail(valSrcExpls[i]);
    }
    return exp;
  }
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  public Explanation customExplain(int doc, Explanation subQueryExpl, Explanation valSrcExpl) {
    float valSrcScore = 1;
    if (valSrcExpl != null) {
      valSrcScore *= valSrcExpl.getValue();
    }
    Explanation exp = new Explanation( valSrcScore * subQueryExpl.getValue(), "custom score: product of:");
    exp.addDetail(subQueryExpl);
    exp.addDetail(valSrcExpl);
    return exp;
  }
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      return new CustomScorer(similarity, reader, this, subQueryScorer, valSrcScorers);
    }

    @Override
    public Explanation explain(IndexReader reader, int doc) throws IOException {
      Explanation explain = doExplain(reader, doc);
      return explain == null ? new Explanation(0.0f, "no matching docs") : explain;
    }
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      Explanation explain = doExplain(reader, doc);
      return explain == null ? new Explanation(0.0f, "no matching docs") : explain;
    }
   
    private Explanation doExplain(IndexReader reader, int doc) throws IOException {
      Explanation subQueryExpl = subQueryWeight.explain(reader, doc);
      if (!subQueryExpl.isMatch()) {
        return subQueryExpl;
      }
      // match
      Explanation[] valSrcExpls = new Explanation[valSrcWeights.length];
      for(int i = 0; i < valSrcWeights.length; i++) {
        valSrcExpls[i] = valSrcWeights[i].explain(reader, doc);
      }
      Explanation customExp = CustomScoreQuery.this.getCustomScoreProvider(reader).customExplain(doc,subQueryExpl,valSrcExpls);
      float sc = getValue() * customExp.getValue();
      Explanation res = new ComplexExplanation(
        true, sc, CustomScoreQuery.this.toString() + ", product of:");
      res.addDetail(customExp);
      res.addDetail(new Explanation(getValue(), "queryBoost")); // actually using the q boost as q weight (== weight value)
      return res;
    }
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        }

        @Override
        public Explanation customExplain(int doc, Explanation subQueryExpl, Explanation valSrcExpl) {
          float valSrcScore = valSrcExpl == null ? 0 : valSrcExpl.getValue();
          Explanation exp = new Explanation(valSrcScore + subQueryExpl.getValue(), "custom score: sum of:");
          exp.addDetail(subQueryExpl);
          if (valSrcExpl != null) {
            exp.addDetail(valSrcExpl);
          }
          return exp;
        }
      };
    }
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        @Override
        public Explanation customExplain(int doc, Explanation subQueryExpl, Explanation valSrcExpls[]) {
          if (valSrcExpls.length == 0) {
            return subQueryExpl;
          }
          Explanation exp = new Explanation(valSrcExpls[0].getValue() + subQueryExpl.getValue(), "sum of:");
          exp.addDetail(subQueryExpl);
          exp.addDetail(valSrcExpls[0]);
          if (valSrcExpls.length == 1) {
            exp.setDescription("CustomMulAdd, sum of:");
            return exp;
          }
          Explanation exp2 = new Explanation(valSrcExpls[1].getValue() * exp.getValue(), "custom score: product of:");
          exp2.addDetail(valSrcExpls[1]);
          exp2.addDetail(exp);
          return exp2;
        }
      };
    }
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        /**
         * {@inheritDoc}
         */
        public Explanation explain(IndexReader reader, int doc) throws IOException {
            return new Explanation();
        }
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        /**
         * {@inheritDoc}
         */
        public Explanation explain(IndexReader reader, int doc) throws IOException {
            return new Explanation();
        }
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Related Classes of org.apache.lucene.search.Explanation

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  • com.browseengine.bobo.api.MultiBoboBrowser
  • com.browseengine.bobo.facets.impl.CompactMultiValueFacetHandler$CompactMultiValueDocScorer
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  • com.browseengine.bobo.query.scoring.DefaultFacetTermScoringFunction
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  • lucli.LuceneMethods
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  • org.apache.jackrabbit.core.query.lucene.DerefQuery$DerefWeight
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