tf.contrib.metrics.streaming_precision_at_thresholds

tf.contrib.metrics.streaming_precision_at_thresholds(
    predictions,
    labels,
    thresholds,
    weights=None,
    metrics_collections=None,
    updates_collections=None,
    name=None
)

Defined in tensorflow/contrib/metrics/python/ops/metric_ops.py.

See the guide: Metrics (contrib) > Metric Ops

Computes precision values for different thresholds on predictions. (deprecated)

THIS FUNCTION IS DEPRECATED. It will be removed in a future version. Instructions for updating: Please switch to tf.metrics.precision_at_thresholds. Note that the order of the labels and predictions arguments are switched.

The streaming_precision_at_thresholds function creates four local variables, true_positives, true_negatives, false_positives and false_negatives for various values of thresholds. precision[i] is defined as the total weight of values in predictions above thresholds[i] whose corresponding entry in labels is True, divided by the total weight of values in predictions above thresholds[i] (true_positives[i] / (true_positives[i] + false_positives[i])).

For estimation of the metric over a stream of data, the function creates an update_op operation that updates these variables and returns the precision.

If weights is None, weights default to 1. Use weights of 0 to mask values.

Args:

• predictions: A floating point Tensor of arbitrary shape and whose values are in the range [0, 1].
• labels: A bool Tensor whose shape matches predictions.
• thresholds: A python list or tuple of float thresholds in [0, 1].
• weights: Tensor whose rank is either 0, or the same rank as labels, and must be broadcastable to labels (i.e., all dimensions must be either 1, or the same as the corresponding labels dimension).
• metrics_collections: An optional list of collections that precision should be added to.
• updates_collections: An optional list of collections that update_op should be added to.
• name: An optional variable_scope name.

Returns:

• precision: A float Tensor of shape [len(thresholds)].
• update_op: An operation that increments the true_positives, true_negatives, false_positives and false_negatives variables that are used in the computation of precision.

Raises:

• ValueError: If predictions and labels have mismatched shapes, or if weights is not None and its shape doesn't match predictions, or if either metrics_collections or updates_collections are not a list or tuple.