Package opennlp.tools.util.featuregen

# Class PreviousMapFeatureGenerator

java.lang.Object
opennlp.tools.util.featuregen.PreviousMapFeatureGenerator

All Implemented Interfaces:
  `AdaptiveFeatureGenerator`

public class PreviousMapFeatureGenerator extends Object implements AdaptiveFeatureGenerator
This `AdaptiveFeatureGenerator` generates features indicating the outcome associated with a previously occurring word.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `PreviousMapFeatureGenerator()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `clearAdaptiveData()`
  Informs a feature generator that the context of the adaptive data (typically a document) is no longer valid.
  `void`
  `createFeatures(List<String> features, String[] tokens, int index, String[] preds)`
  Adds the appropriate features for the token at the specified `index` with the specified array of `previousOutcomes` to the specified list of features.
  `void`
  `updateAdaptiveData(String[] tokens, String[] outcomes)`
  Generates previous decision features for the token based on contents of the previous map.

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

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

- ## Constructor Details

  - ### PreviousMapFeatureGenerator

    public PreviousMapFeatureGenerator()

- ## Method Details

  - ### createFeatures

    public void createFeatures(List<String> features, String[] tokens, int index, String[] preds)
    Description copied from interface: `AdaptiveFeatureGenerator`
    Adds the appropriate features for the token at the specified `index` with the specified array of `previousOutcomes` to the specified list of features.
    Specified by:
      `createFeatures` in interface `AdaptiveFeatureGenerator`
    Parameters:
      `features` - The list of features to be added to.
      `tokens` - The tokens of the sentence or other text unit being processed.
      `index` - The index of the token which is currently being processed.
      `preds` - The outcomes for the tokens prior to the specified index.

  - ### updateAdaptiveData

    public void updateAdaptiveData(String[] tokens, String[] outcomes)
    Generates previous decision features for the token based on contents of the previous map.
    Specified by:
      `updateAdaptiveData` in interface `AdaptiveFeatureGenerator`
    Parameters:
      `tokens` - The tokens of the sentence or other text unit which has been processed.
      `outcomes` - The outcomes associated with the specified tokens.

  - ### clearAdaptiveData

    public void clearAdaptiveData()
    Description copied from interface: `AdaptiveFeatureGenerator`
    Informs a feature generator that the context of the adaptive data (typically a document) is no longer valid.
    Specified by:
      `clearAdaptiveData` in interface `AdaptiveFeatureGenerator`