Package com.jalios.jcms.search

Class CustomSimilarity

  • public class CustomSimilarity
extends org.apache.lucene.search.similarities.ClassicSimilarity
    Custom scoring implementation.

    • Nested Class Summary

      • Nested classes/interfaces inherited from class org.apache.lucene.search.similarities.Similarity

        org.apache.lucene.search.similarities.Similarity.SimScorer

    • Field Summary

      • Fields inherited from class org.apache.lucene.search.similarities.TFIDFSimilarity

        discountOverlaps

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      float lengthNorm​(int numTerms)
      We do not want long text to be less important than short text.

      • Methods inherited from class org.apache.lucene.search.similarities.ClassicSimilarity

        idf, idfExplain, tf, toString

      • Methods inherited from class org.apache.lucene.search.similarities.TFIDFSimilarity

        computeNorm, getDiscountOverlaps, idfExplain, scorer, setDiscountOverlaps

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • CustomSimilarity

        public CustomSimilarity()

    • Method Detail

      • lengthNorm

        public float lengthNorm​(int numTerms)
        We do not want long text to be less important than short text. Therefore always return 1 for this normalization value to have no impact. This value is computed during indexing and stored in the index.
        Overrides:
        lengthNorm in class org.apache.lucene.search.similarities.ClassicSimilarity