src/main/java/org/apache/datasketches/pig/quantiles/DataToDoublesSketch.java [234:258]:
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  @Override
  public String getInitial() {
    return Initial.class.getName();
  }

  @Override
  public String getIntermed() {
    return IntermediateFinal.class.getName();
  }

  @Override
  public String getFinal() {
    return IntermediateFinal.class.getName();
  }

  // STATIC Initial Class only called by Pig

  /**
   * Class used to calculate the initial pass of an Algebraic sketch operation.
   *
   * <p>
   * The Initial class simply passes through all records unchanged so that they can be
   * processed by the intermediate processor instead.</p>
   */
  public static class Initial extends EvalFunc<Tuple> {
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src/main/java/org/apache/datasketches/pig/sampling/ReservoirSampling.java [166:181]:
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  @Override
  public String getInitial() {
    return Initial.class.getName();
  }

  @Override
  public String getIntermed() {
    return IntermediateFinal.class.getName();
  }

  @Override
  public String getFinal() {
    return IntermediateFinal.class.getName();
  }

  public static class Initial extends EvalFunc<Tuple> {
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