def variables_to_restore(self, moving_avg_variables=None):
"""[Designed for TF 1.x] Returns a map of names to `Variables` to restore.
(Designed to work with legacy `tf.compat.v1.train.Saver`, sensitive to
specific variable names and not recommended for TF2)
If a variable has a moving average, use the moving average variable name as
the restore name; otherwise, use the variable name.
For example,
```python
variables_to_restore = ema.variables_to_restore()
saver = tf.compat.v1.train.Saver(variables_to_restore)
```
Below is an example of such mapping:
```
conv/batchnorm/gamma/ExponentialMovingAverage: conv/batchnorm/gamma,
conv_4/conv2d_params/ExponentialMovingAverage: conv_4/conv2d_params,
global_step: global_step
```
Args:
moving_avg_variables: a list of variables that require to use of the
moving average variable name to be restored. If None, it will default to
variables.moving_average_variables() + variables.trainable_variables()
Returns:
A map from restore_names to variables. The restore_name is either the
original or the moving average version of the variable name, depending
on whether the variable name is in the `moving_avg_variables`.
"""
name_map = {}
if moving_avg_variables is None:
# Include trainable variables and variables which have been explicitly
# added to the moving_average_variables collection.
moving_avg_variables = variables.trainable_variables()
moving_avg_variables += variables.moving_average_variables()
# Remove duplicates
moving_avg_variables = set(v.ref() for v in moving_avg_variables)
# Collect all the variables with moving average,
for v in moving_avg_variables:
name_map[self.average_name(v.deref())] = v.deref()
# Make sure we restore variables without moving averages as well.
moving_avg_variable_names = set(
v.deref().name for v in moving_avg_variables)
for v in list(set(variables.global_variables())):
if v.name not in moving_avg_variable_names and v.op.name not in name_map:
name_map[v.op.name] = v
return name_map
def variables_to_restore(self, moving_avg_variables=None):
"""Returns a map of names to `Variables` to restore.
If a variable has a moving average, use the moving average variable name as
the restore name; otherwise, use the variable name.
For example,
```python
variables_to_restore = ema.variables_to_restore()
saver = tf.compat.v1.train.Saver(variables_to_restore)
```
Below is an example of such mapping:
```
conv/batchnorm/gamma/ExponentialMovingAverage: conv/batchnorm/gamma,
conv_4/conv2d_params/ExponentialMovingAverage: conv_4/conv2d_params,
global_step: global_step
```
Args:
moving_avg_variables: a list of variables that require to use of the
moving average variable name to be restored. If None, it will default to
variables.moving_average_variables() + variables.trainable_variables()
Returns:
A map from restore_names to variables. The restore_name is either the
original or the moving average version of the variable name, depending
on whether the variable name is in the `moving_avg_variables`.
"""
name_map = {}
if moving_avg_variables is None:
# Include trainable variables and variables which have been explicitly
# added to the moving_average_variables collection.
moving_avg_variables = variables.trainable_variables()
moving_avg_variables += variables.moving_average_variables()
# Remove duplicates
moving_avg_variables = set(moving_avg_variables)
# Collect all the variables with moving average,
for v in moving_avg_variables:
name_map[self.average_name(v)] = v
# Make sure we restore variables without moving averages as well.
moving_avg_variable_names = set([v.name for v in moving_avg_variables])
for v in list(set(variables.global_variables())):
if v.name not in moving_avg_variable_names and v.op.name not in name_map:
name_map[v.op.name] = v
return name_map
def variables_to_restore(self, moving_avg_variables=None):
"""Returns a map of names to `Variables` to restore.
If a variable has a moving average, use the moving average variable name as
the restore name; otherwise, use the variable name.
For example,
```python
variables_to_restore = ema.variables_to_restore()
saver = tf.train.Saver(variables_to_restore)
```
Below is an example of such mapping:
```
conv/batchnorm/gamma/ExponentialMovingAverage: conv/batchnorm/gamma,
conv_4/conv2d_params/ExponentialMovingAverage: conv_4/conv2d_params,
global_step: global_step
```
Args:
moving_avg_variables: a list of variables that require to use of the
moving variable name to be restored. If None, it will default to
variables.moving_average_variables() + variables.trainable_variables()
Returns:
A map from restore_names to variables. The restore_name can be the
moving_average version of the variable name if it exist, or the original
variable name.
"""
name_map = {}
if moving_avg_variables is None:
# Include trainable variables and variables which have been explicitly
# added to the moving_average_variables collection.
moving_avg_variables = variables.trainable_variables()
moving_avg_variables += variables.moving_average_variables()
# Remove duplicates
moving_avg_variables = set(moving_avg_variables)
# Collect all the variables with moving average,
for v in moving_avg_variables:
name_map[self.average_name(v)] = v
# Make sure we restore variables without moving averages as well.
moving_avg_variable_names = set([v.name for v in moving_avg_variables])
for v in list(set(variables.global_variables())):
if v.name not in moving_avg_variable_names and v.op.name not in name_map:
name_map[v.op.name] = v
return name_map
def variables_to_restore(self, moving_avg_variables=None):
""""""
name_map = {}
if moving_avg_variables is None:
moving_avg_variables = variables.trainable_variables()
moving_avg_variables += variables.moving_average_variables()
# Remove duplicates
moving_avg_variables = set(moving_avg_variables)
# Collect all the variables with moving average,
for v in moving_avg_variables:
name_map[self.average_name(v)] = v
# Make sure we restore variables without moving average as well.
for v in list(set(variables.all_variables()) - moving_avg_variables):
if v.op.name not in name_map:
name_map[v.op.name] = v
return name_map
def variables_to_restore(self, moving_avg_variables=None):
""""""
name_map = {}
if moving_avg_variables is None:
moving_avg_variables = variables.trainable_variables()
moving_avg_variables += variables.moving_average_variables()
# Remove duplicates
moving_avg_variables = set(moving_avg_variables)
# Collect all the variables with moving average,
for v in moving_avg_variables:
name_map[self.average_name(v)] = v
# Make sure we restore variables without moving average as well.
for v in list(set(variables.all_variables()) - moving_avg_variables):
if v.op.name not in name_map:
name_map[v.op.name] = v
return name_map
def variables_to_restore(self):
"""Returns a map of names to `Variables` to restore.
If a variable has a moving average, use the moving average variable name as
the restore name; otherwise, use the variable name.
For example,
```python
variables_to_restore = ema.variables_to_restore()
saver = tf.train.Saver(variables_to_restore)
```
Below is an example of such mapping:
```
conv/batchnorm/gamma/ExponentialMovingAverage: conv/batchnorm/gamma,
conv_4/conv2d_params/ExponentialMovingAverage: conv_4/conv2d_params,
global_step: global_step
```
Returns:
A map from restore_names to variables. The restore_name can be the
moving_average version of the variable name if it exist, or the original
variable name.
"""
name_map = {}
# Collect all the variables with moving average, including all
# the trainable variables and variables which have been explicitly
# added to the collection.
moving_avg_variables = list(
set(variables.moving_average_variables() +
variables.trainable_variables()))
for v in moving_avg_variables:
name_map[self.average_name(v)] = v
# Make sure we restore variables without moving average as well.
for v in list(
set(variables.all_variables()) - set(moving_avg_variables)):
if v.op.name not in name_map:
name_map[v.op.name] = v
return name_map
def variables_to_restore(self):
"""Returns a map of names to `Variables` to restore.
If a variable has a moving average, use the moving average variable name as
the restore name; otherwise, use the variable name.
For example,
```python
variables_to_restore = ema.variables_to_restore()
saver = tf.train.Saver(variables_to_restore)
```
Below is an example of such mapping:
```
conv/batchnorm/gamma/ExponentialMovingAverage: conv/batchnorm/gamma,
conv_4/conv2d_params/ExponentialMovingAverage: conv_4/conv2d_params,
global_step: global_step
```
Returns:
A map from restore_names to variables. The restore_name can be the
moving_average version of the variable name if it exist, or the original
variable name.
"""
name_map = {}
# Collect all the variables with moving average, including all
# the trainable variables and variables which have been explicitly
# added to the collection.
moving_avg_variables = list(set(variables.moving_average_variables() +
variables.trainable_variables()))
for v in moving_avg_variables:
name_map[self.average_name(v)] = v
# Make sure we restore variables without moving average as well.
for v in list(set(variables.all_variables()) - set(moving_avg_variables)):
if v.op.name not in name_map:
name_map[v.op.name] = v
return name_map
def _CheckDecay(self, ema, actual_decay, dim):
def _Scale(dk, steps):
if ema._zero_debias:
return 1 - dk**steps
else:
return 1
tens = _Repeat(10.0, dim)
thirties = _Repeat(30.0, dim)
var0 = variables.Variable(tens, name="v0")
var1 = variables.Variable(thirties, name="v1")
variables.global_variables_initializer().run()
# Note that tensor2 is not a Variable but just a plain Tensor resulting
# from the sum operation.
tensor2 = var0 + var1
update = ema.apply([var0, var1, tensor2])
avg0 = ema.average(var0)
avg1 = ema.average(var1)
avg2 = ema.average(tensor2)
self.assertItemsEqual([var0, var1], variables.moving_average_variables())
self.assertFalse(avg0 in variables.trainable_variables())
self.assertFalse(avg1 in variables.trainable_variables())
self.assertFalse(avg2 in variables.trainable_variables())
variables.global_variables_initializer().run()
self.assertEqual("v0/ExponentialMovingAverage:0", avg0.name)
self.assertEqual("v1/ExponentialMovingAverage:0", avg1.name)
self.assertEqual("add/ExponentialMovingAverage:0", avg2.name)
# Check initial values.
self.assertAllClose(tens, self.evaluate(var0))
self.assertAllClose(thirties, self.evaluate(var1))
self.assertAllClose(_Repeat(10.0 + 30.0, dim), self.evaluate(tensor2))
# Check that averages are initialized correctly.
self.assertAllClose(tens, self.evaluate(avg0))
self.assertAllClose(thirties, self.evaluate(avg1))
# Note that averages of Tensor's initialize to zeros_like since no value
# of the Tensor is known because the Op has not been run (yet).
self.assertAllClose(_Repeat(0.0, dim), self.evaluate(avg2))
# Update the averages and check.
update.run()
dk = actual_decay
expected = _Repeat(10.0 * dk + 10.0 * (1 - dk), dim)
self.assertAllClose(expected, self.evaluate(avg0))
expected = _Repeat(30.0 * dk + 30.0 * (1 - dk), dim)
self.assertAllClose(expected, self.evaluate(avg1))
expected = _Repeat(0.0 * dk + (10.0 + 30.0) * (1 - dk) / _Scale(dk, 1), dim)
self.assertAllClose(expected, self.evaluate(avg2))
# Again, update the averages and check.
update.run()
expected = _Repeat((10.0 * dk + 10.0 * (1 - dk)) * dk + 10.0 * (1 - dk),
dim)
self.assertAllClose(expected, self.evaluate(avg0))
expected = _Repeat((30.0 * dk + 30.0 * (1 - dk)) * dk + 30.0 * (1 - dk),
dim)
self.assertAllClose(expected, self.evaluate(avg1))
expected = _Repeat(((0.0 * dk + (10.0 + 30.0) * (1 - dk)) * dk +
(10.0 + 30.0) * (1 - dk)) / _Scale(dk, 2), dim)
self.assertAllClose(expected, self.evaluate(avg2))