histogram_ops.py 文件源码

def _auc_hist_accumulate(hist_true, hist_false, nbins, collections):
  """Accumulate histograms in new variables."""
  with variable_scope.variable_scope(
      None, 'hist_accumulate', [hist_true, hist_false]):
    # Holds running total histogram of scores for records labeled True.
    hist_true_acc = variable_scope.get_variable(
        'hist_true_acc',
        shape=[nbins],
        dtype=hist_true.dtype,
        initializer=init_ops.zeros_initializer(),
        collections=collections,
        trainable=False)
    # Holds running total histogram of scores for records labeled False.
    hist_false_acc = variable_scope.get_variable(
        'hist_false_acc',
        shape=[nbins],
        dtype=hist_true.dtype,
        initializer=init_ops.zeros_initializer(),
        collections=collections,
        trainable=False)

    update_op = control_flow_ops.group(
        hist_true_acc.assign_add(hist_true),
        hist_false_acc.assign_add(hist_false),
        name='update_op')

    return hist_true_acc, hist_false_acc, update_op