tf.contrib.eager.metrics.Mean

Computes the (weighted) mean of the given values.

Inherits From: Metric

Attributes
name
variables

Methods

add_variable

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Only for use by descendants of Metric.

aggregate

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Adds in the state from a list of metrics.

Default implementation sums all the metric variables.

Args
metrics A list of metrics with the same type as self.
Raises
ValueError If metrics contains invalid data.

build

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Method to create variables.

Called by __call__() before call() for the first time.

Args
*args
**kwargs The arguments to the first invocation of __call__(). build() may use the shape and/or dtype of these arguments when deciding how to create variables.

call

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Accumulate statistics for computing the mean.

For example, if values is [1, 3, 5, 7] then the mean is 4. If the weights were specified as [1, 1, 0, 0] then the mean would be 2.

Args
values Tensor with the per-example value.
weights Optional weighting of each example. Defaults to 1.
Returns
The arguments, for easy chaining.

init_variables

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Initializes this Metric's variables.

Should be called after variables are created in the first execution of __call__(). If using graph execution, the return value should be run() in a session before running the op returned by __call__(). (See example above.)

Returns
If using graph execution, this returns an op to perform the initialization. Under eager execution, the variables are reset to their initial values as a side effect and this function returns None.

result

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Returns the result of the Metric.

Args
write_summary bool indicating whether to feed the result to the summary before returning.
Returns
aggregated metric as float.
Raises
ValueError if the optional argument is not bool

value

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In graph mode returns the result Tensor while in eager the callable.

__call__

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Returns op to execute to update this metric for these inputs.

Returns None if eager execution is enabled. Returns a graph-mode function if graph execution is enabled.

Args
*args
**kwargs A mini-batch of inputs to the Metric, passed on to call().

© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r1.15/api_docs/python/tf/contrib/eager/metrics/Mean