本文整理汇总了Python中pylearn2.monitor.Monitor类的典型用法代码示例。如果您正苦于以下问题:Python Monitor类的具体用法?Python Monitor怎么用?Python Monitor使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Monitor类的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: channel_scaling_checker
def channel_scaling_checker(num_examples, mode, num_batches, batch_size):
num_features = 2
monitor = Monitor(DummyModel(num_features))
dataset = DummyDataset(num_examples, num_features)
monitor.add_dataset(dataset=dataset, mode=mode,
num_batches=num_batches, batch_size=batch_size)
vis_batch = T.matrix()
mean = vis_batch.mean()
data_specs = (monitor.model.get_input_space(),
monitor.model.get_input_source())
monitor.add_channel(name='mean', ipt=vis_batch, val=mean, dataset=dataset,
data_specs=data_specs)
monitor()
assert 'mean' in monitor.channels
mean = monitor.channels['mean']
assert len(mean.val_record) == 1
actual = mean.val_record[0]
X = dataset.get_design_matrix()
if batch_size is not None and num_batches is not None:
total = min(num_examples, num_batches * batch_size)
else:
total = num_examples
expected = X[:total].mean()
if not np.allclose(expected, actual):
raise AssertionError("Expected monitor to contain %f but it has "
"%f" % (expected, actual))
示例2: test_serialization_guard
def test_serialization_guard():
# tests that Train refuses to serialize the dataset
dim = 2
m = 11
rng = np.random.RandomState([28,9,2012])
X = rng.randn(m, dim)
dataset = DenseDesignMatrix(X=X)
model = DummyModel(dim)
# make the dataset part of the model, so it will get
# serialized
model.dataset = dataset
Monitor.get_monitor(model)
algorithm = DummyAlgorithm()
train = Train(dataset, model, algorithm, save_path='_tmp_unit_test.pkl',
save_freq=1, extensions=None)
try:
train.main_loop()
except RuntimeError:
return
assert False # train did not complain, this is a bug
示例3: channel_scaling_checker
def channel_scaling_checker(num_examples, mode, num_batches, batch_size):
num_features = 2
monitor = Monitor(DummyModel(num_features))
dataset = DummyDataset(num_examples, num_features)
try:
monitor.add_dataset(dataset=dataset, mode=mode,
num_batches=num_batches, batch_size=batch_size)
except NotImplementedError:
# make sure this was due to the unimplemented batch_size case
if num_batches is None:
assert num_examples % batch_size != 0
else:
assert num_examples % num_batches != 0
raise SkipTest()
vis_batch = T.matrix()
mean = vis_batch.mean()
monitor.add_channel(name='mean', ipt=vis_batch, val=mean, dataset=dataset)
monitor()
assert 'mean' in monitor.channels
mean = monitor.channels['mean']
assert len(mean.val_record) == 1
actual = mean.val_record[0]
X = dataset.get_design_matrix()
if batch_size is not None and num_batches is not None:
total = min(num_examples, num_batches * batch_size)
else:
total = num_examples
expected = X[:total].mean()
if not np.allclose(expected, actual):
raise AssertionError("Expected monitor to contain %f but it has "
"%f" % (expected, actual))
示例4: prep_valtest_monitor
def prep_valtest_monitor(self, model, batch_size):
minibatch = T.as_tensor_variable(
self.valid_ddm.get_batch_topo(batch_size),
name='minibatch'
)
target = T.matrix('target')
Accuracy = self.get_classification_accuracy(model, minibatch, target)
monitor = Monitor.get_monitor(model)
monitor.add_dataset(self.valid_ddm, 'sequential', batch_size)
monitor.add_channel("Validation Classification Accuracy",
(minibatch, target),
Accuracy,
self.valid_ddm)
monitor.add_channel("Validation Missclassification",
(minibatch, target),
1.0-Accuracy,
self.valid_ddm)
if self.test_ddm is not None:
monitor.add_dataset(self.test_ddm, 'sequential', batch_size)
monitor.add_channel("Test Classification Accuracy",
(minibatch, target),
Accuracy,
self.test_ddm)
示例5: test_reject_empty
def test_reject_empty():
# Test that Monitor raises an error if asked to iterate over 0 batches
BATCH_SIZE = 2
num_examples = BATCH_SIZE
NUM_FEATURES = 3
model = DummyModel(NUM_FEATURES)
monitor = Monitor.get_monitor(model)
monitoring_dataset = DummyDataset(num_examples = num_examples,
num_features = NUM_FEATURES)
monitor.add_dataset(monitoring_dataset, 'sequential', batch_size=BATCH_SIZE,
num_batches = 0)
name = 'z'
monitor.add_channel(name = name,
ipt = model.input_space.make_theano_batch(),
val = 0.,
data_specs=(model.get_input_space(), model.get_input_source()))
try:
monitor()
except ValueError:
return
assert False
示例6: main_loop
def main_loop(self):
"""
Repeatedly runs an epoch of the training algorithm, runs any
epoch-level callbacks, and saves the model.
"""
if self.algorithm is None:
self.model.monitor = Monitor.get_monitor(self.model)
self.run_callbacks_and_monitoring()
while self.model.train(dataset=self.dataset):
self.run_callbacks_and_monitoring()
if self.save_freq > 0 and self.epochs % self.save_freq == 0:
self.save()
self.epochs += 1
self.run_callbacks_and_monitoring()
if self.save_freq > 0:
self.save()
else:
self.algorithm.setup(model=self.model, dataset=self.dataset)
self.run_callbacks_and_monitoring()
epoch_start = datetime.datetime.now()
while self.algorithm.train(dataset=self.dataset):
epoch_end = datetime.datetime.now()
print 'Time this epoch:', str(epoch_end - epoch_start)
epoch_start = datetime.datetime.now()
self.run_callbacks_and_monitoring()
if self.save_freq > 0 and self.epochs % self.save_freq == 0:
self.save()
self.epochs += 1
self.run_callbacks_and_monitoring()
if self.save_freq > 0:
self.save()
示例7: setup_monitor
def setup_monitor(self):
if self.topo_view:
print "topo view"
self.minibatch = T.as_tensor_variable(
self.valid_ddm.get_batch_topo(self.batch_size),
name='minibatch'
)
else:
print "design view"
batch = self.valid_ddm.get_batch_design(self.batch_size)
if isinstance(batch, spp.csr_matrix):
print "sparse2"
self.minibatch = self.model.get_input_space().make_batch_theano()
print type(self.minibatch)
else:
self.minibatch = T.as_tensor_variable(
self.valid_ddm.get_batch_design(self.batch_size),
name='minibatch'
)
self.target = T.matrix('target')
self.monitor = Monitor.get_monitor(self.model)
self.log_channel_names = []
self.log_channel_names.extend(self.base_channel_names)
self.monitor.add_dataset(self.valid_ddm, 'sequential',
self.batch_size)
if self.test_ddm is not None:
self.monitor.add_dataset(self.test_ddm, 'sequential',
self.batch_size)
示例8: test_ambig_data
def test_ambig_data():
# test that the right error is raised if you
# add a channel to a monitor that has multiple datasets
# and don't specify the dataset
BATCH_SIZE = 2
num_examples = BATCH_SIZE
NUM_FEATURES = 3
model = DummyModel(NUM_FEATURES)
monitor = Monitor.get_monitor(model)
first = DummyDataset(num_examples = num_examples,
num_features = NUM_FEATURES)
second = DummyDataset(num_examples = num_examples,
num_features = NUM_FEATURES)
monitor.add_dataset(first, 'sequential', batch_size=BATCH_SIZE)
monitor.add_dataset(second, 'sequential', batch_size=BATCH_SIZE)
name = 'num_prereq_calls'
try:
monitor.add_channel(name = name,
ipt = model.input_space.make_theano_batch(),
val = 0.,
data_specs=(model.get_input_space(), model.get_input_source()))
except ValueError as e:
assert exc_message(e) == _err_ambig_data
return
assert False
示例9: test_prereqs_batch
def test_prereqs_batch():
# Test that prereqs get run before each monitoring batch
BATCH_SIZE = 2
num_examples = 2 * BATCH_SIZE
NUM_FEATURES = 3
model = DummyModel(NUM_FEATURES)
monitor = Monitor.get_monitor(model)
monitoring_dataset = DummyDataset(num_examples=num_examples, num_features=NUM_FEATURES)
monitor.add_dataset(monitoring_dataset, "sequential", batch_size=BATCH_SIZE)
sign = sharedX(1.0)
def prereq(X, y):
sign.set_value(-sign.get_value())
name = "batches_should_cancel_to_0"
monitor.add_channel(name=name, ipt=model.input_space.make_theano_batch(), val=sign, prereqs=[prereq])
channel = monitor.channels[name]
assert len(channel.val_record) == 0
monitor()
assert channel.val_record == [0]
monitor()
assert channel.val_record == [0, 0]
示例10: prep_valtest_monitor
def prep_valtest_monitor(self, model, batch_size):
if self.topo_view:
print "topo view"
minibatch = T.as_tensor_variable(
self.valid_ddm.get_batch_topo(batch_size),
name='minibatch'
)
else:
print "design view"
minibatch = T.as_tensor_variable(
self.valid_ddm.get_batch_design(batch_size),
name='minibatch'
)
target = T.matrix('target')
valMSE = MissingTargetCost()(model, minibatch, target)
monitor = Monitor.get_monitor(model)
monitor.add_dataset(self.valid_ddm, 'sequential', batch_size)
monitor.add_channel("Validation MSE",
(minibatch, target),
valMSE,
self.valid_ddm)
if self.test_ddm is not None:
monitor.add_dataset(self.test_ddm, 'sequential', batch_size)
monitor.add_channel("Test MSE",
(minibatch, target),
valMSE,
self.test_ddm)
示例11: setup
def setup(self, model, dataset):
"""
Allows the training algorithm to do some preliminary configuration
*before* we actually start training the model. The dataset is provided
in case other derived training algorithms need to modify model based on
the dataset.
Parameters
----------
model: a Python object representing the model to train loosely
implementing the interface of models.model.Model.
dataset: a pylearn2.datasets.dataset.Dataset object used to draw
training data
"""
self.model = model
self.monitor = Monitor.get_monitor(model)
if self.monitoring_dataset is not None:
# Get the data specifications needed by the model
space, source = model.get_monitoring_data_specs()
# Create Theano variables for each of the individual components
# of that data. Usually, it will be X for inputs and Y for targets.
# First, we need to find these components, and put them in a tuple
mapping = DataSpecsMapping((space, source))
space_tuple = mapping.flatten(space, return_tuple=True)
source_tuple = mapping.flatten(source, return_tuple=True)
# Then, build a flat tuple of these Theano variables
ipt = tuple(sp.make_theano_batch(name='monitor_%s' % src)
for (sp, src) in safe_zip(space_tuple, source_tuple))
# Finally, organize them back into a structure expected by the
# monitoring channels of the model
nested_ipt = mapping.nest(ipt)
self.monitor.add_dataset(dataset=self.monitoring_dataset,
mode="sequential",
batch_size=self.batch_size,
num_batches=self.monitoring_batches)
channels = model.get_monitoring_channels(nested_ipt)
if not isinstance(channels, dict):
raise TypeError("model.get_monitoring_channels must return a "
"dictionary, but it returned " + str(channels))
for name in channels:
J = channels[name]
if isinstance(J, tuple):
assert len(J) == 2
J, prereqs = J
else:
prereqs = None
self.monitor.add_channel(name=name,
ipt=nested_ipt,
val=J,
prereqs=prereqs,
data_specs=(space, source))
self.first = True
self.bSetup = True
示例12: setup_monitor
def setup_monitor(self):
if self.topo_view:
print "topo view"
self.minibatch = T.as_tensor_variable(
self.valid_ddm.get_batch_topo(self.batch_size),
name='minibatch'
)
else:
print "design view"
self.minibatch = T.as_tensor_variable(
self.valid_ddm.get_batch_design(self.batch_size),
name='minibatch'
)
self.target = T.tensor3('target')
self.monitor = Monitor.get_monitor(self.model)
self.log_channel_names = []
self.log_channel_names.extend(self.base_channel_names)
self.monitor.add_dataset(self.valid_ddm, 'sequential',
self.batch_size)
if self.test_ddm is not None:
self.monitor.add_dataset(self.test_ddm, 'sequential',
self.batch_size)
示例13: test_prereqs
def test_prereqs():
# Test that prereqs get run before the monitoring channels are computed
BATCH_SIZE = 2
num_examples = BATCH_SIZE
NUM_FEATURES = 3
model = DummyModel(NUM_FEATURES)
monitor = Monitor.get_monitor(model)
monitoring_dataset = DummyDataset(num_examples = num_examples,
num_features = NUM_FEATURES)
monitor.add_dataset(monitoring_dataset, 'sequential', batch_size=BATCH_SIZE)
prereq_counter = sharedX(0.)
def prereq(*data):
prereq_counter.set_value(prereq_counter.get_value() + 1.)
name = 'num_prereq_calls'
monitor.add_channel(name = name,
ipt = model.input_space.make_theano_batch(),
val = prereq_counter,
prereqs = [ prereq ],
data_specs=(model.get_input_space(), model.get_input_source()))
channel = monitor.channels[name]
assert len(channel.val_record) == 0
monitor()
assert channel.val_record == [1]
monitor()
assert channel.val_record == [1,2]
示例14: test_save_load_save
def test_save_load_save():
"""
Test that a monitor can be saved, then loaded, and then the loaded
copy can be saved again.
This only tests that the serialization and deserialization processes
don't raise an exception. It doesn't test for correctness at all.
"""
model = DummyModel(1)
monitor = Monitor.get_monitor(model)
num_examples = 2
num_features = 3
num_batches = 1
batch_size = 2
dataset = DummyDataset(num_examples, num_features)
monitor.add_dataset(dataset=dataset,
num_batches=num_batches, batch_size=batch_size)
vis_batch = T.matrix()
mean = vis_batch.mean()
data_specs = (monitor.model.get_input_space(),
monitor.model.get_input_source())
monitor.add_channel(name='mean', ipt=vis_batch, val=mean, dataset=dataset,
data_specs=data_specs)
saved = to_string(monitor)
monitor = from_string(saved)
saved_again = to_string(monitor)
示例15: setup
def setup(self, model, dataset):
"""
Initialize the training algorithm. Should be called
once before calls to train.
Parameters
----------
model : object
Model to be trained. Object implementing the pylearn2 Model
interface.
dataset : object
Dataset on which to train. Object implementing the
pylearn2 Dataset interface.
"""
self.model = model
self.monitor = Monitor.get_monitor(model)
self.monitor.set_dataset(dataset=self.monitoring_dataset,
batches=self.monitoring_batches,
batch_size=self.batch_size)
X = T.matrix(name='sgd_X')
J = self.cost(model, X)
if J.name is None:
J.name = 'sgd_cost(' + X.name + ')'
self.monitor.add_channel(name=J.name, ipt=X, val=J)
params = model.get_params()
for i, param in enumerate(params):
if param.name is None:
param.name = 'sgd_params[%d]' % i
grads = dict(zip(params, T.grad(J, params)))
for param in grads:
if grads[param].name is None:
grads[param].name = ('grad(%(costname)s, %(paramname)s)' %
{'costname': J.name,
'paramname': param.name})
learning_rate = T.scalar('sgd_learning_rate')
updates = dict(zip(params, [param - learning_rate * grads[param]
for param in params]))
for param in updates:
if updates[param].name is None:
updates[param].name = 'sgd_update(' + param.name + ')'
model.censor_updates(updates)
for param in updates:
if updates[param] is None:
updates[param].name = 'censor(sgd_update(' + param.name + '))'
self.sgd_update = function([X, learning_rate], updates=updates,
name='sgd_update')
self.params = params
self.bSetup = True