def train_experiment(device):
with TemporaryDirectory() as logdir:
# sample data
num_users, num_features, num_items = int(1e4), int(1e1), 10
X = torch.rand(num_users, num_features)
y = (torch.rand(num_users, num_items) > 0.5).to(torch.float32)
# pytorch loaders
dataset = TensorDataset(X, y)
loader = DataLoader(dataset, batch_size=32, num_workers=1)
loaders = {"train": loader, "valid": loader}
# model, criterion, optimizer, scheduler
model = torch.nn.Linear(num_features, num_items)
criterion = torch.nn.BCEWithLogitsLoss()
optimizer = torch.optim.Adam(model.parameters())
scheduler = torch.optim.lr_scheduler.MultiStepLR(optimizer, [2])
class CustomRunner(dl.Runner):
def handle_batch(self, batch):
x, y = batch
logits = self.model(x)
self.batch = {
"features": x,
"logits": logits,
"scores": torch.sigmoid(logits),
"targets": y,
}
# model training
runner = CustomRunner()
runner.train(
engine=dl.DeviceEngine(device),
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=scheduler,
loaders=loaders,
num_epochs=1,
verbose=False,
callbacks=[
dl.CriterionCallback(input_key="logits", target_key="targets", metric_key="loss"),
dl.AUCCallback(input_key="scores", target_key="targets"),
dl.HitrateCallback(input_key="scores", target_key="targets", topk_args=(1, 3, 5)),
dl.MRRCallback(input_key="scores", target_key="targets", topk_args=(1, 3, 5)),
dl.MAPCallback(input_key="scores", target_key="targets", topk_args=(1, 3, 5)),
dl.NDCGCallback(input_key="scores", target_key="targets", topk_args=(1, 3, 5)),
dl.OptimizerCallback(metric_key="loss"),
dl.SchedulerCallback(),
dl.CheckpointCallback(
logdir=logdir, loader_key="valid", metric_key="map01", minimize=False
),
],
)
def train_experiment(device, engine=None):
with TemporaryDirectory() as logdir:
# sample data
num_users, num_features, num_items = int(1e4), int(1e1), 10
X = torch.rand(num_users, num_features)
y = (torch.rand(num_users, num_items) > 0.5).to(torch.float32)
# pytorch loaders
dataset = TensorDataset(X, y)
loader = DataLoader(dataset, batch_size=32, num_workers=1)
loaders = {"train": loader, "valid": loader}
# model, criterion, optimizer, scheduler
model = torch.nn.Linear(num_features, num_items)
criterion = torch.nn.BCEWithLogitsLoss()
optimizer = torch.optim.Adam(model.parameters())
scheduler = torch.optim.lr_scheduler.MultiStepLR(optimizer, [2])
callbacks = [
dl.CriterionCallback(input_key="logits", target_key="targets", metric_key="loss"),
dl.AUCCallback(input_key="scores", target_key="targets"),
dl.HitrateCallback(input_key="scores", target_key="targets", topk_args=(1, 3, 5)),
dl.MRRCallback(input_key="scores", target_key="targets", topk_args=(1, 3, 5)),
dl.MAPCallback(input_key="scores", target_key="targets", topk_args=(1, 3, 5)),
dl.NDCGCallback(input_key="scores", target_key="targets", topk_args=(1, 3, 5)),
dl.OptimizerCallback(metric_key="loss"),
dl.SchedulerCallback(),
dl.CheckpointCallback(
logdir=logdir, loader_key="valid", metric_key="map01", minimize=False
),
]
if engine is None or not isinstance(
engine, (dl.AMPEngine, dl.DataParallelAMPEngine, dl.DistributedDataParallelAMPEngine)
):
callbacks.append(dl.AUCCallback(input_key="logits", target_key="targets"))
# model training
runner = CustomRunner()
runner.train(
engine=engine or dl.DeviceEngine(device),
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=scheduler,
loaders=loaders,
num_epochs=1,
verbose=False,
callbacks=callbacks,
)
}
item_num = len(train_dataset[0])
model = MultiVAE([200, 600, item_num], dropout=0.5)
optimizer = optim.Adam(model.parameters(), lr=0.001)
lr_scheduler = StepLR(optimizer, step_size=20, gamma=0.1)
engine = dl.Engine()
hparams = {
"anneal_cap": 0.2,
"total_anneal_steps": 6000,
}
callbacks = [
dl.NDCGCallback("logits", "targets", [20, 50, 100]),
dl.MAPCallback("logits", "targets", [20, 50, 100]),
dl.MRRCallback("logits", "targets", [20, 50, 100]),
dl.HitrateCallback("logits", "targets", [20, 50, 100]),
dl.BackwardCallback("loss"),
dl.OptimizerCallback("loss", accumulation_steps=1),
dl.SchedulerCallback(),
]
runner = RecSysRunner()
runner.train(
model=model,
optimizer=optimizer,
engine=engine,
hparams=hparams,
scheduler=lr_scheduler,
loaders=loaders,
num_epochs=100,
verbose=True,
def train_experiment(engine=None):
with TemporaryDirectory() as logdir:
# sample data
num_users, num_features, num_items = int(1e4), int(1e1), 10
X = torch.rand(num_users, num_features)
y = (torch.rand(num_users, num_items) > 0.5).to(torch.float32)
# pytorch loaders
dataset = TensorDataset(X, y)
loader = DataLoader(dataset, batch_size=32, num_workers=1)
loaders = {"train": loader, "valid": loader}
# model, criterion, optimizer, scheduler
model = torch.nn.Linear(num_features, num_items)
criterion = torch.nn.BCEWithLogitsLoss()
optimizer = torch.optim.Adam(model.parameters())
scheduler = torch.optim.lr_scheduler.MultiStepLR(optimizer, [2])
callbacks = [
dl.BatchTransformCallback(
input_key="logits",
output_key="scores",
transform=torch.sigmoid,
scope="on_batch_end",
),
dl.CriterionCallback(input_key="logits",
target_key="targets",
metric_key="loss"),
dl.HitrateCallback(input_key="scores",
target_key="targets",
topk=(1, 3, 5)),
dl.MRRCallback(input_key="scores",
target_key="targets",
topk=(1, 3, 5)),
dl.MAPCallback(input_key="scores",
target_key="targets",
topk=(1, 3, 5)),
dl.NDCGCallback(input_key="scores",
target_key="targets",
topk=(1, 3)),
dl.BackwardCallback(metric_key="loss"),
dl.OptimizerCallback(metric_key="loss"),
dl.SchedulerCallback(),
dl.CheckpointCallback(logdir=logdir,
loader_key="valid",
metric_key="map01",
minimize=False),
]
if isinstance(engine, dl.CPUEngine):
callbacks.append(
dl.AUCCallback(input_key="logits", target_key="targets"))
# model training
runner = dl.SupervisedRunner(
input_key="features",
output_key="logits",
target_key="targets",
loss_key="loss",
)
runner.train(
engine=engine,
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=scheduler,
loaders=loaders,
num_epochs=1,
verbose=False,
callbacks=callbacks,
)