62 lines
1.3 KiB
Python
62 lines
1.3 KiB
Python
"""RSLVQ example using the Iris 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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# Reproducibility
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pl.utilities.seed.seed_everything(seed=42)
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# Dataset
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train_ds = pt.datasets.Iris(dims=[0, 2])
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# Dataloaders
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train_loader = torch.utils.data.DataLoader(train_ds, batch_size=64)
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# Hyperparameters
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hparams = dict(
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distribution=[2, 2, 3],
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proto_lr=0.05,
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lambd=0.1,
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variance=1.0,
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input_dim=2,
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latent_dim=2,
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bb_lr=0.01,
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)
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# Initialize the model
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model = pt.models.RSLVQ(
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hparams,
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optimizer=torch.optim.Adam,
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prototypes_initializer=pt.initializers.SSCI(train_ds, noise=0.2),
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)
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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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# Setup trainer
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trainer = pl.Trainer.from_argparse_args(
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args,
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callbacks=[vis],
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terminate_on_nan=True,
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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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