How to use

isFirstBatchDone

method

in

weka.filters.unsupervised.instance.Resample

/**
 * Signify that this batch of input to the filter is finished. If the filter
 * requires all instances prior to filtering, output() may now be called to
 * retrieve the filtered instances.
 * 
 * @return true if there are instances pending output
 * @throws IllegalStateException if no input structure has been defined
 */
@Override
public boolean batchFinished() {
 if (getInputFormat() == null) {
  throw new IllegalStateException("No input instance format defined");
 }
 if (!isFirstBatchDone()) {
  // Do the subsample, and clear the input instances.
  createSubsample();
 }
 flushInput();
 m_NewBatch = true;
 m_FirstBatchDone = true;
 return (numPendingOutput() != 0);
}

/**
 * Signify that this batch of input to the filter is finished. If the filter
 * requires all instances prior to filtering, output() may now be called to
 * retrieve the filtered instances.
 * 
 * @return true if there are instances pending output
 * @throws IllegalStateException if no input structure has been defined
 */
@Override
public boolean batchFinished() {
 if (getInputFormat() == null) {
  throw new IllegalStateException("No input instance format defined");
 }
 if (!isFirstBatchDone()) {
  // Do the subsample, and clear the input instances.
  createSubsample();
 }
 flushInput();
 m_NewBatch = true;
 m_FirstBatchDone = true;
 return (numPendingOutput() != 0);
}

/**
 * Input an instance for filtering. Filter requires all training instances be
 * read before producing output.
 * 
 * @param instance the input instance
 * @return true if the filtered instance may now be collected with output().
 * @throws IllegalStateException if no input structure has been defined
 */
@Override
public boolean input(Instance instance) {
 if (getInputFormat() == null) {
  throw new IllegalStateException("No input instance format defined");
 }
 if (m_NewBatch) {
  resetQueue();
  m_NewBatch = false;
 }
 if (isFirstBatchDone()) {
  push(instance);
  return true;
 } else {
  bufferInput(instance);
  return false;
 }
}

/**
 * Input an instance for filtering. Filter requires all training instances be
 * read before producing output.
 * 
 * @param instance the input instance
 * @return true if the filtered instance may now be collected with output().
 * @throws IllegalStateException if no input structure has been defined
 */
@Override
public boolean input(Instance instance) {
 if (getInputFormat() == null) {
  throw new IllegalStateException("No input instance format defined");
 }
 if (m_NewBatch) {
  resetQueue();
  m_NewBatch = false;
 }
 if (isFirstBatchDone()) {
  push(instance);
  return true;
 } else {
  bufferInput(instance);
  return false;
 }
}