PiperOrigin-RevId: 274828751

Before:
  The supplied function with argspec SimpleArgSpec(args=[], varargs=[], kwargs=[], defaults=[]) cannot accept a value of type string* single argument or multiple positional and/or keyword arguments.

After:
  The supplied function "my_tf_fn" with argspec () cannot accept a value of type string* as either a single argument or multiple positional and/or keyword arguments.
PiperOrigin-RevId: 274814269

PiperOrigin-RevId: 274714639

PiperOrigin-RevId: 274674077

PiperOrigin-RevId: 274673083

PiperOrigin-RevId: 274669504

* Added CheckpointManager API.
* Added FileCehckpointManager implementation.
* Updated an experiment to:
  * Use the new CheckpointManager objects.
  * Separate evaluation from the metrics consumer/hook.
  * Not store metrics in the checkpoint.

TODO: Update the remaining experiments to use the checkpoint manager.
TODO: Remove checkpoint utils.
PiperOrigin-RevId: 274620556

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PiperOrigin-RevId: 274615965

Previously, to_type only supported passing attr.s class instances with type information embedded into the instance fields (i.e. tff.to_type(MyAttrsClass(my_field=tf.int32))). This change extends support to also accept attr.s class type objects when the field types have been defined, i.e:

  @attr.s
  class MyAttrsClass(object):
    my_field = attr.ib(type=tf.int32)

  tff.to_type(MyAttrsClass)

PiperOrigin-RevId: 274598038

PiperOrigin-RevId: 274262570

Removes duplication tf data dataset representations, going instead through public constant in tensorflow_utils.

PiperOrigin-RevId: 274221123

* Updated the type annotations for `utils_impl`.
* Updated the build target to be of kind `pytype_strict_library`.
* Updated copybara configuration.

PiperOrigin-RevId: 274214750

This is a prerequisite for making TensorShape and Dimension more strict
about the types of their arguments.

PiperOrigin-RevId: 274176324

should preserve the percentage of both in the final sample.

PiperOrigin-RevId: 274054312

Add a federated_sample aggregation that is used to collect a sample of client values on the server using reservoir sampling.

PiperOrigin-RevId: 274022855

Adds utility function to core/utils/differential_privacy for creating DPQuery with adaptive clipping and/or per-vector clipping. Also cleans up research/baselines/emnist/run_experiment.

PiperOrigin-RevId: 273777778

PiperOrigin-RevId: 273753109

Adds a some test coverage and handles corenr cases better.

PiperOrigin-RevId: 273647845

Normally, **kwargs only accepts a dict for kwargs, but currently autograph wraps the keyword arguments in a dict call -- `dict(kwargs)` -- this is to be fixed soon. Since dict accepts both dicts and lists of key-value pairs, this effectively masked the bug.

PiperOrigin-RevId: 273636344

This follows a similar convetion to tf.kersas.Model.summary(): https://www.tensorflow.org/api_docs/python/tf/keras/Model#summary

PiperOrigin-RevId: 273609432

PiperOrigin-RevId: 273559700

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PiperOrigin-RevId: 273296155

PiperOrigin-RevId: 272968768

PiperOrigin-RevId: 272949383

Use the serial number pattern to check target directory naming before saving a
checkpoint.

PiperOrigin-RevId: 272911215

PiperOrigin-RevId: 272905857

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WARNING:
Depending on tensorflow_addons will transitively require TFF to pull in TF 2.0
pip packages; hence this is backwards incompatible with previous TFF versions
which were compatible with TF 1.x.
PiperOrigin-RevId: 272744011

Pin to a previous tf-nightly version that is still TF 1.x compatible.

PiperOrigin-RevId: 272734678

Update to TF 2.0 optimizers and use gradient tape.

PiperOrigin-RevId: 272705511

PiperOrigin-RevId: 272689129