67 lines
1.6 KiB
Python
67 lines
1.6 KiB
Python
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"""Localized-GMLVQ example using the Moons dataset."""
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import argparse
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import prototorch as pt
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import pytorch_lightning as pl
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import torch
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if __name__ == "__main__":
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# Command-line arguments
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parser = argparse.ArgumentParser()
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parser = pl.Trainer.add_argparse_args(parser)
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args = parser.parse_args()
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# Dataset
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train_ds = pt.datasets.Moons(num_samples=300, noise=0.2, seed=42)
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# Reproducibility
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pl.utilities.seed.seed_everything(seed=2)
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# Dataloaders
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train_loader = torch.utils.data.DataLoader(train_ds,
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batch_size=256,
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shuffle=True)
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# Hyperparameters
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hparams = dict(
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distribution=[1, 3],
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input_dim=2,
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latent_dim=2,
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)
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# Initialize the model
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model = pt.models.LGMLVQ(hparams,
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prototype_initializer=pt.components.SMI(train_ds))
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# Compute intermediate input and output sizes
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model.example_input_array = torch.zeros(4, 2)
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# Summary
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print(model)
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# Callbacks
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vis = pt.models.VisGLVQ2D(data=train_ds)
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es = pl.callbacks.EarlyStopping(
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monitor="train_acc",
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min_delta=0.001,
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patience=20,
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mode="max",
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verbose=False,
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check_on_train_epoch_end=True,
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)
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# Setup trainer
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trainer = pl.Trainer.from_argparse_args(
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args,
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callbacks=[
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vis,
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es,
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],
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weights_summary="full",
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accelerator="ddp",
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)
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# Training loop
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trainer.fit(model, train_loader)
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