org.apache.lucene.search.spell

## Class HighFrequencyDictionary

- java.lang.Object
- - org.apache.lucene.search.spell.HighFrequencyDictionary

- All Implemented Interfaces:
    Dictionary

      public class HighFrequencyDictionary
      extends Object
      implements Dictionary

  HighFrequencyDictionary: terms taken from the given field of a Lucene index, which appear in a number of documents above a given threshold. Threshold is a value in [0..1] representing the minimum number of documents (of the total) where a term should appear. Based on LuceneDictionary.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `HighFrequencyDictionary(IndexReader reader, String field, float thresh)` Creates a new Dictionary, pulling source terms from the specified `field` in the provided `reader`.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `InputIterator` | `getEntryIterator()` Returns an iterator over all the entries

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### HighFrequencyDictionary

          public HighFrequencyDictionary(IndexReader reader,
                                         String field,
                                         float thresh)

      Creates a new Dictionary, pulling source terms from the specified `field` in the provided `reader`.

      Terms appearing in less than `thresh` percentage of documents will be excluded.

  - ### Method Detail

    - #### getEntryIterator

          public final InputIterator getEntryIterator()
                                               throws IOException

      Description copied from interface: `Dictionary`
      Returns an iterator over all the entries
      Specified by:
        `getEntryIterator` in interface `Dictionary`
      Returns:
        Iterator
      Throws:
        `IOException`

Copyright © 2000-2019 Apache Software Foundation. All Rights Reserved.