# Package org.apache.lucene.misc

- Class Summary
  Class | Description
  --- | ---
  ChainedFilter | Allows multiple `Filter`s to be chained.
  HighFreqTerms | `HighFreqTerms` class extracts terms and their frequencies out of an existing Lucene index.
  IndexMergeTool | Merges indices specified on the command line into the index specified as the first command line argument.
  LengthNormModifier | Deprecated Use `FieldNormModifier`
  SweetSpotSimilarity | A similarity with a lengthNorm that provides for a "plateau" of equally good lengths, and tf helper functions.

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