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Add split functionality to synthetic_data #268

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Add split functionality to synthetic_data #268

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46e50db
Add split functionality to synthetic_data
stes Sep 6, 2025
a720f8c
Merge branch 'main' into stes/add-split
MMathisLab Sep 29, 2025
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19 changes: 19 additions & 0 deletions cebra/datasets/synthetic_data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,25 @@ def __init__(self, name, root=_DEFAULT_DATADIR, download=True):
self.index = self.data['u']
self.lam = self.data['lam']


def split(self, split):
tot_len = len(self.neural)
train_idx = np.arange(tot_len)[:int(tot_len*0.8)]
valid_idx = np.arange(tot_len)[int(tot_len*0.8):]
Comment on lines +118 to +119
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Copilot AI Sep 24, 2025

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[nitpick] The hardcoded 0.8 split ratio should be extracted as a configurable parameter or class constant to improve maintainability and allow for different split ratios.

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if split == 'train':
self.neural = self.neural[train_idx]
self.index = self.index[train_idx]
self.idx = train_idx
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Copilot AI Sep 24, 2025

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The method modifies the instance state by setting self.idx, but this attribute is not defined in init. This could lead to inconsistent state if split() is called multiple times or if other code expects self.idx to always exist.

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elif split == 'valid':
self.neural = self.neural[valid_idx]
self.index = self.index[valid_idx]
self.idx = valid_idx
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Copilot AI Sep 24, 2025

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The method modifies the instance state by setting self.idx, but this attribute is not defined in init. This could lead to inconsistent state if split() is called multiple times or if other code expects self.idx to always exist.

Copilot uses AI. Check for mistakes.
elif split == 'all':
pass
else:
raise ValueError(f"{split} not supported")

@property
def input_dimension(self):
return self.neural.size(1)
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