org.apache.nutch.scoring.similarity

## Class SimilarityScoringFilter

- java.lang.Object
- - org.apache.nutch.scoring.AbstractScoringFilter
  - - org.apache.nutch.scoring.similarity.SimilarityScoringFilter

- All Implemented Interfaces:
    Configurable, Pluggable, ScoringFilter

      public class SimilarityScoringFilter
      extends AbstractScoringFilter

- - ### Field Summary

    - ### Fields inherited from interface org.apache.nutch.scoring.ScoringFilter

      `X_POINT_ID`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `SimilarityScoringFilter()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `CrawlDatum` | `distributeScoreToOutlinks(Text fromUrl, ParseData parseData, Collection<Map.Entry<Text,CrawlDatum>> targets, CrawlDatum adjust, int allCount)` Distribute score value from the current page to all its outlinked pages.
    `Configuration` | `getConf()`
    `void` | `passScoreAfterParsing(Text url, Content content, Parse parse)` Currently a part of score distribution is performed using only data coming from the parsing process.
    `void` | `setConf(Configuration conf)`

    - ### Methods inherited from class org.apache.nutch.scoring.AbstractScoringFilter

      `generatorSortValue, indexerScore, initialScore, injectedScore, passScoreBeforeParsing, updateDbScore`

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

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

    - ### Methods inherited from interface org.apache.nutch.scoring.ScoringFilter

      `orphanedScore`

- - ### Constructor Detail

    - #### SimilarityScoringFilter

          public SimilarityScoringFilter()

  - ### Method Detail

    - #### getConf

          public Configuration getConf()

      Specified by:
        `getConf` in interface `Configurable`
      Overrides:
        `getConf` in class `AbstractScoringFilter`

    - #### setConf

          public void setConf(Configuration conf)

      Specified by:
        `setConf` in interface `Configurable`
      Overrides:
        `setConf` in class `AbstractScoringFilter`

    - #### passScoreAfterParsing

          public void passScoreAfterParsing(Text url,
                                            Content content,
                                            Parse parse)
                                     throws ScoringFilterException

      Description copied from interface: `ScoringFilter`
      Currently a part of score distribution is performed using only data coming from the parsing process. We need this method in order to ensure the presence of score data in these steps.
      Specified by:
        `passScoreAfterParsing` in interface `ScoringFilter`
      Overrides:
        `passScoreAfterParsing` in class `AbstractScoringFilter`
      Parameters:
        `url` - page url
        `content` - original content. NOTE: modifications to this value are not persisted.
        `parse` - target instance to copy the score information to. Implementations may modify this in-place, primarily by setting some metadata properties.
      Throws:
        `ScoringFilterException`

    - #### distributeScoreToOutlinks

          public CrawlDatum distributeScoreToOutlinks(Text fromUrl,
                                                      ParseData parseData,
                                                      Collection<Map.Entry<Text,CrawlDatum>> targets,
                                                      CrawlDatum adjust,
                                                      int allCount)
                                               throws ScoringFilterException

      Description copied from interface: `ScoringFilter`
      Distribute score value from the current page to all its outlinked pages.
      Specified by:
        `distributeScoreToOutlinks` in interface `ScoringFilter`
      Overrides:
        `distributeScoreToOutlinks` in class `AbstractScoringFilter`
      Parameters:
        `fromUrl` - url of the source page
        `parseData` - ParseData instance, which stores relevant score value(s) in its metadata. NOTE: filters may modify this in-place, all changes will be persisted.
        `targets` - <url, CrawlDatum> pairs. NOTE: filters can modify this in-place, all changes will be persisted.
        `adjust` - a CrawlDatum instance, initially null, which implementations may use to pass adjustment values to the original CrawlDatum. When creating this instance, set its status to `CrawlDatum.STATUS_LINKED`.
        `allCount` - number of all collected outlinks from the source page
      Returns:
        if needed, implementations may return an instance of CrawlDatum, with status `CrawlDatum.STATUS_LINKED`, which contains adjustments to be applied to the original CrawlDatum score(s) and metadata. This can be null if not needed.
      Throws:
        `ScoringFilterException`

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