def test_score_shuffled(self):
# Test scoring with a shuffled dataset
class SimpleVoter(nn.Module):
def forward(self, x):
"""Set class 0 to -1 if x and 1 otherwise"""
mask = x % 2 == 0
out = torch.zeros(x.shape[0], 2)
out[mask, 0] = 1 # class 0
out[~mask, 1] = 1 # class 1
return out
# Create model
task_name = "VotingTask"
module_name = "simple_voter"
module_pool = nn.ModuleDict({module_name: SimpleVoter()})
op0 = Operation(module_name=module_name,
inputs=[("_input_", "data")],
name="op0")
op_sequence = [op0]
task = Task(name=task_name,
module_pool=module_pool,
op_sequence=op_sequence)
model = MultitaskModel([task])
# Create dataset
y_list = [0, 0, 0, 0, 0, 1, 1, 1, 1, 1]
x_list = [i for i in range(len(y_list))]
Y = torch.LongTensor(y_list * 100)
X = torch.FloatTensor(x_list * 100)
dataset = DictDataset(name="dataset",
split="train",
X_dict={"data": X},
Y_dict={task_name: Y})
# Create dataloaders
dataloader = DictDataLoader(dataset, batch_size=2, shuffle=False)
scores = model.score([dataloader])
self.assertEqual(scores["VotingTask/dataset/train/accuracy"], 0.6)
dataloader_shuffled = DictDataLoader(dataset,
batch_size=2,
shuffle=True)
scores_shuffled = model.score([dataloader_shuffled])
self.assertEqual(scores_shuffled["VotingTask/dataset/train/accuracy"],
0.6)
def create_dataloader(task_name="task", split="train", **kwargs):
X = torch.FloatTensor([[i, i] for i in range(NUM_EXAMPLES)])
Y = torch.ones(NUM_EXAMPLES).long()
dataset = DictDataset(name="dataset",
split=split,
X_dict={"data": X},
Y_dict={task_name: Y})
dataloader = DictDataLoader(dataset, batch_size=BATCH_SIZE, **kwargs)
return dataloader
def test_remapped_labels(self):
# Test additional label keys in the Y_dict
# Without remapping, model should ignore them
task_name = self.task1.name
X = torch.FloatTensor([[i, i] for i in range(NUM_EXAMPLES)])
Y = torch.ones(NUM_EXAMPLES).long()
Y_dict = {task_name: Y, "other_task": Y}
dataset = DictDataset(name="dataset",
split="train",
X_dict={"data": X},
Y_dict=Y_dict)
dataloader = DictDataLoader(dataset, batch_size=BATCH_SIZE)
model = MultitaskModel([self.task1])
loss_dict, count_dict = model.calculate_loss(dataset.X_dict,
dataset.Y_dict)
self.assertIn("task1", loss_dict)
# Test setting without remapping
results = model.predict(dataloader)
self.assertIn("task1", results["golds"])
self.assertNotIn("other_task", results["golds"])
scores = model.score([dataloader])
self.assertIn("task1/dataset/train/accuracy", scores)
self.assertNotIn("other_task/dataset/train/accuracy", scores)
# Test remapped labelsets
results = model.predict(dataloader,
remap_labels={"other_task": task_name})
self.assertIn("task1", results["golds"])
self.assertIn("other_task", results["golds"])
results = model.score([dataloader],
remap_labels={"other_task": task_name})
self.assertIn("task1/dataset/train/accuracy", results)
self.assertIn("other_task/dataset/train/accuracy", results)
def test_classifier_dataloader(self):
"""Unit test of DictDataLoader"""
x1 = [
torch.Tensor([1]),
torch.Tensor([1, 2]),
torch.Tensor([1, 2, 3]),
torch.Tensor([1, 2, 3, 4]),
torch.Tensor([1, 2, 3, 4, 5]),
]
y1 = torch.Tensor([0, 0, 0, 0, 0])
x2 = [
torch.Tensor([1, 2, 3, 4, 5]),
torch.Tensor([1, 2, 3, 4]),
torch.Tensor([1, 2, 3]),
torch.Tensor([1, 2]),
torch.Tensor([1]),
]
y2 = torch.Tensor([1, 1, 1, 1, 1])
dataset = DictDataset(
name="new_data",
split="train",
X_dict={"data1": x1, "data2": x2},
Y_dict={"task1": y1, "task2": y2},
)
dataloader1 = DictDataLoader(dataset=dataset, batch_size=2)
x_batch, y_batch = next(iter(dataloader1))
# Check if the dataloader is correctly constructed
self.assertEqual(dataloader1.dataset.split, "train")
self.assertTrue(torch.equal(x_batch["data1"], torch.Tensor([[1, 0], [1, 2]])))
self.assertTrue(
torch.equal(
x_batch["data2"], torch.Tensor([[1, 2, 3, 4, 5], [1, 2, 3, 4, 0]])
)
)
self.assertTrue(torch.equal(y_batch["task1"], torch.Tensor([0, 0])))
self.assertTrue(torch.equal(y_batch["task2"], torch.Tensor([1, 1])))
dataloader2 = DictDataLoader(dataset=dataset, batch_size=3)
x_batch, y_batch = next(iter(dataloader2))
# Check if the dataloader with differet batch size is correctly constructed
self.assertEqual(dataloader2.dataset.split, "train")
self.assertTrue(
torch.equal(
x_batch["data1"], torch.Tensor([[1, 0, 0], [1, 2, 0], [1, 2, 3]])
)
)
self.assertTrue(
torch.equal(
x_batch["data2"],
torch.Tensor([[1, 2, 3, 4, 5], [1, 2, 3, 4, 0], [1, 2, 3, 0, 0]]),
)
)
self.assertTrue(torch.equal(y_batch["task1"], torch.Tensor([0, 0, 0])))
self.assertTrue(torch.equal(y_batch["task2"], torch.Tensor([1, 1, 1])))
y3 = [
torch.Tensor([2]),
torch.Tensor([2]),
torch.Tensor([2]),
torch.Tensor([2]),
torch.Tensor([2]),
]
dataset.Y_dict["task2"] = y3
x_batch, y_batch = next(iter(dataloader1))
# Check dataloader is correctly updated with update dataset
self.assertTrue(
torch.equal(
x_batch["data2"], torch.Tensor([[1, 2, 3, 4, 5], [1, 2, 3, 4, 0]])
)
)
self.assertTrue(torch.equal(y_batch["task2"], torch.Tensor([[2], [2]])))
x_batch, y_batch = next(iter(dataloader2))
self.assertTrue(
torch.equal(
x_batch["data2"],
torch.Tensor([[1, 2, 3, 4, 5], [1, 2, 3, 4, 0], [1, 2, 3, 0, 0]]),
)
)
self.assertTrue(torch.equal(y_batch["task2"], torch.Tensor([[2], [2], [2]])))
# In the `DictDataset`, each label corresponds to a particular `Task` by name. We'll define these `Task` objects in the following section as we define our model.
#
# `DictDataLoader` is a wrapper for `torch.utils.data.DataLoader`, which handles the collate function for `DictDataset` appropriately.
# +
from cerbero.core import DictDataset, DictDataLoader
dataloaders = []
for task_name in ["class", "rgb"]:
for split, X, Y in (("train", X_train, Y_train), ("valid", X_val, Y_val),
("test", X_test, Y_test)):
X_dict = {f"{task_name}_data": torch.FloatTensor(X[task_name])}
YTensor = torch.FloatTensor if task_name == "rgb" else torch.LongTensor
Y_dict = {f"{task_name}_task": YTensor(Y[task_name])}
dataset = DictDataset(f"{task_name}Dataset", split, X_dict, Y_dict)
dataloader = DictDataLoader(dataset, batch_size=32)
dataloaders.append(dataloader)
# -
# We now have 4 data loaders, one for each split (`train`, `val`) of each task (`class_task` and `rgb_task`)
# ## Define Model
# Now we'll define the `MultitaskClassifier` model, a PyTorch multi-task classifier. We'll instantiate it from a list of `Tasks`
# +
import torch.nn as nn
from cerbero.core import Operation
# Define the base conv net and a one-layer prediction "head" module
from cerbero.schedulers import SequentialScheduler, ShuffledScheduler
dataset1 = DictDataset(
"d1",
"train",
X_dict={"data": [0, 1, 2, 3, 4]},
Y_dict={"labels": torch.LongTensor([1, 1, 1, 1, 1])},
)
dataset2 = DictDataset(
"d2",
"train",
X_dict={"data": [5, 6, 7, 8, 9]},
Y_dict={"labels": torch.LongTensor([2, 2, 2, 2, 2])},
)
dataloader1 = DictDataLoader(dataset1, batch_size=2)
dataloader2 = DictDataLoader(dataset2, batch_size=2)
dataloaders = [dataloader1, dataloader2]
class SequentialTest(unittest.TestCase):
def test_sequential(self):
scheduler = SequentialScheduler()
data = []
for (batch, dl) in scheduler.get_batches(dataloaders):
X_dict, Y_dict = batch
data.extend(X_dict["data"])
self.assertEqual(data, sorted(data))
def test_shuffled(self):
random.seed(123)