tf.contrib.estimator.add_metrics

Creates a new tf.estimator.Estimator which has given metrics.

tf.contrib.estimator.add_metrics(
    estimator, metric_fn
)

Example:

  def my_auc(labels, predictions):
    return {'auc': tf.metrics.auc(labels, predictions['logistic'])}

  estimator = tf.estimator.DNNClassifier(...)
  estimator = tf.contrib.estimator.add_metrics(estimator, my_auc)
  estimator.train(...)
  estimator.evaluate(...)

Example usage of custom metric which uses features:

  def my_auc(features, labels, predictions):
    return {'auc': tf.metrics.auc(
      labels, predictions['logistic'], weights=features['weight'])}

  estimator = tf.estimator.DNNClassifier(...)
  estimator = tf.contrib.estimator.add_metrics(estimator, my_auc)
  estimator.train(...)
  estimator.evaluate(...)

Args
estimator	A tf.estimator.Estimator object.
metric_fn	A function which should obey the following signature: Args: can only have following four arguments in any order: predictions: Predictions Tensor or dict of Tensor created by given estimator. features: Input dict of Tensor objects created by input_fn which is given to estimator.evaluate as an argument. labels: Labels Tensor or dict of Tensor created by input_fn which is given to estimator.evaluate as an argument. config: config attribute of the estimator. Returns: Dict of metric results keyed by name. Final metrics are a union of this and estimator's existing metrics. If there is a name conflict between this and estimators existing metrics, this will override the existing one. The values of the dict are the results of calling a metric function, namely a (metric_tensor, update_op) tuple.

Returns
A new tf.estimator.Estimator which has a union of original metrics with given ones.