def test_linear_scheduler_no_gaps(self):
config = self._get_valid_linear_config()
# Check rescaled
scheduler = CompositeParamScheduler.from_config(config)
schedule = [
scheduler(epoch_num / self._num_epochs)
for epoch_num in range(self._num_epochs)
]
expected_schedule = [0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9]
self.assertEqual(expected_schedule, schedule)
# Check fixed composition gives same result as only 1 scheduler
config["schedulers"][1] = config["schedulers"][0]
config["interval_scaling"] = ["fixed", "fixed"]
scheduler = CompositeParamScheduler.from_config(config)
linear_scheduler = build_param_scheduler(config["schedulers"][0])
schedule = [
scheduler(epoch_num / self._num_epochs)
for epoch_num in range(self._num_epochs)
]
expected_schedule = [
linear_scheduler(epoch_num / self._num_epochs)
for epoch_num in range(self._num_epochs)
]
self.assertEqual(expected_schedule, schedule)
def test_scheduler_with_mixed_types(self):
config = self._get_valid_mixed_config()
scheduler_0 = build_param_scheduler(config["schedulers"][0])
scheduler_1 = build_param_scheduler(config["schedulers"][1])
# Check scaled
config["interval_scaling"] = ["rescaled", "rescaled"]
scheduler = CompositeParamScheduler.from_config(config)
scaled_schedule = [
round(scheduler(epoch_num / self._num_epochs), 4)
for epoch_num in range(self._num_epochs)
]
expected_schedule = [
round(scheduler_0(epoch_num / self._num_epochs), 4)
for epoch_num in range(0, self._num_epochs, 2)
] + [
round(scheduler_1(epoch_num / self._num_epochs), 4)
for epoch_num in range(0, self._num_epochs, 2)
]
self.assertEqual(scaled_schedule, expected_schedule)
# Check fixed
config["interval_scaling"] = ["fixed", "fixed"]
scheduler = CompositeParamScheduler.from_config(config)
fixed_schedule = [
round(scheduler(epoch_num / self._num_epochs), 4)
for epoch_num in range(self._num_epochs)
]
expected_schedule = [
round(scheduler_0(epoch_num / self._num_epochs), 4)
for epoch_num in range(0, int(self._num_epochs / 2))
] + [
round(scheduler_1(epoch_num / self._num_epochs), 4)
for epoch_num in range(int(self._num_epochs / 2), self._num_epochs)
]
self.assertEqual(fixed_schedule, expected_schedule)
# Check that default is rescaled
del config["interval_scaling"]
scheduler = CompositeParamScheduler.from_config(config)
schedule = [
round(scheduler(epoch_num / self._num_epochs), 4)
for epoch_num in range(self._num_epochs)
]
self.assertEqual(scaled_schedule, schedule)
# Check warmup of rescaled then fixed
config["interval_scaling"] = ["rescaled", "fixed"]
scheduler = CompositeParamScheduler.from_config(config)
fixed_schedule = [
round(scheduler(epoch_num / self._num_epochs), 4)
for epoch_num in range(self._num_epochs)
]
expected_schedule = [
round(scheduler_0(epoch_num / self._num_epochs), 4)
for epoch_num in range(0, int(self._num_epochs), 2)
] + [
round(scheduler_1(epoch_num / self._num_epochs), 4)
for epoch_num in range(int(self._num_epochs / 2), self._num_epochs)
]
self.assertEqual(fixed_schedule, expected_schedule)
def test_scheduler_lengths_within_epsilon_of_one(self):
config = self._get_lengths_sum_less_one_config()
scheduler = CompositeParamScheduler.from_config(config)
schedule = [
scheduler(epoch_num / self._num_epochs)
for epoch_num in range(self._num_epochs)
]
expected_schedule = [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.2, 0.2, 0.2]
self.assertEqual(schedule, expected_schedule)
def test_long_scheduler(self):
config = self._get_valid_long_config()
scheduler = CompositeParamScheduler.from_config(config)
schedule = [
scheduler(epoch_num / self._num_epochs)
for epoch_num in range(self._num_epochs)
]
expected_schedule = [0.1, 0.1, 0.2, 0.2, 0.2, 0.2, 0.3, 0.4, 0.4, 0.4]
self.assertEqual(schedule, expected_schedule)
def test_scheduler_update_interval(self):
config = self._get_valid_mixed_config()
# Check default
scheduler = CompositeParamScheduler.from_config(config)
self.assertEqual(scheduler.update_interval, UpdateInterval.STEP)
# Check step
step_config = copy.deepcopy(config)
step_config["update_interval"] = "step"
scheduler = build_param_scheduler(step_config)
self.assertEqual(scheduler.update_interval, UpdateInterval.STEP)
# Check epoch
epoch_config = copy.deepcopy(config)
epoch_config["update_interval"] = "epoch"
scheduler = build_param_scheduler(epoch_config)
self.assertEqual(scheduler.update_interval, UpdateInterval.EPOCH)
def test_invalid_config(self):
config = self._get_valid_mixed_config()
bad_config = copy.deepcopy(config)
# No schedulers
bad_config["schedulers"] = []
bad_config["lengths"] = []
with self.assertRaises(AssertionError):
CompositeParamScheduler.from_config(bad_config)
# Size of schedulers and lengths doesn't match
bad_config["schedulers"] = copy.deepcopy(config["schedulers"])
bad_config["lengths"] = copy.deepcopy(config["lengths"])
bad_config["schedulers"].append(bad_config["schedulers"][-1])
with self.assertRaises(AssertionError):
CompositeParamScheduler.from_config(bad_config)
# Sum of lengths < 1
bad_config["schedulers"] = copy.deepcopy(config["schedulers"])
bad_config["lengths"][-1] -= 0.1
with self.assertRaises(AssertionError):
CompositeParamScheduler.from_config(bad_config)
# Sum of lengths > 1
bad_config["lengths"] = copy.deepcopy(config["lengths"])
bad_config["lengths"][-1] += 0.1
with self.assertRaises(AssertionError):
CompositeParamScheduler.from_config(bad_config)
# Bad value for update_interval
bad_config["lengths"] = copy.deepcopy(config["lengths"])
bad_config["update_interval"] = "epochs"
with self.assertRaises(Exception):
CompositeParamScheduler.from_config(bad_config)
# Bad value for composition_mode
del bad_config["update_interval"]
bad_config["interval_scaling"] = ["rescaled", "rescaleds"]
with self.assertRaises(AssertionError):
CompositeParamScheduler.from_config(bad_config)
# Wrong number composition modes
del bad_config["interval_scaling"]
bad_config["interval_scaling"] = ["rescaled"]
with self.assertRaises(AssertionError):
CompositeParamScheduler.from_config(bad_config)
# Missing required parameters
del bad_config["interval_scaling"]
bad_config["lengths"] = config["lengths"]
del bad_config["lengths"]
with self.assertRaises(AssertionError):
CompositeParamScheduler.from_config(bad_config)
bad_config["lengths"] = config["lengths"]
del bad_config["schedulers"]
with self.assertRaises(AssertionError):
CompositeParamScheduler.from_config(bad_config)