47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
"""GMLVQ example using all four dimensions of 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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from sklearn.datasets import load_iris
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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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x_train, y_train = load_iris(return_X_y=True)
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train_ds = pt.datasets.NumpyDataset(x_train, y_train)
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# Dataloaders
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train_loader = torch.utils.data.DataLoader(train_ds,
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num_workers=0,
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batch_size=150)
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# Hyperparameters
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nclasses = 3
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prototypes_per_class = 1
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hparams = dict(
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distribution=(nclasses, prototypes_per_class),
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input_dim=x_train.shape[1],
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latent_dim=x_train.shape[1],
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proto_lr=0.01,
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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.GMLVQ(hparams,
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prototype_initializer=pt.components.SMI(train_ds))
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# Setup trainer
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trainer = pl.Trainer.from_argparse_args(args, )
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# Training loop
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trainer.fit(model, train_loader)
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# Display the Lambda matrix
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model.show_lambda()
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