Convert sparse labels to pandas series #1059
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mfeurer
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Apr 16, 2021
mfeurer
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Apr 21, 2021
mfeurer
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Apr 22, 2021
openml/datasets/dataset.py
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| if scipy.sparse.issparse(data): | ||
| return pd.DataFrame.sparse.from_spmatrix(data, columns=attribute_names) | ||
| data = pd.DataFrame.sparse.from_spmatrix(data, columns=attribute_names) | ||
| if isinstance(data, pd.DataFrame) and data.shape[1] == 1: |
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Is this necessary? Don't you also do this in get_data()? Also, I think it'll break the balloon datast which has only a single attribute.
mfeurer
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Apr 26, 2021
PGijsbers
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Feb 23, 2023
* Convert sparse labels to pandas series * Handling sparse labels as Series * Handling sparse targets when dataset as arrays * Revamping sparse dataset tests * Removing redundant unit test * Cleaning target column formatting * Minor comment edit
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Reference Issue
Addresses #1057.
What does this PR implement/fix? Explain your changes.
Adds a check when fetching and converting datasets that converts labels as sparse arrays to dataframes.
How should this PR be tested?