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Convert sparse labels to pandas series #1059

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Merged
mfeurer merged 8 commits into from
Apr 26, 2021
Merged

Convert sparse labels to pandas series #1059

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e9a2e33
Convert sparse labels to pandas series
Neeratyoy Apr 15, 2021
1ae89f5
Handling sparse labels as Series
Neeratyoy Apr 19, 2021
244d9bb
Handling sparse targets when dataset as arrays
Neeratyoy Apr 21, 2021
2bb085a
Merge branch 'develop' into fix_1057
Neeratyoy Apr 21, 2021
fad916c
Revamping sparse dataset tests
Neeratyoy Apr 22, 2021
2170c72
Removing redundant unit test
Neeratyoy Apr 22, 2021
97fa8c7
Cleaning target column formatting
Neeratyoy Apr 23, 2021
b63eac9
Minor comment edit
Neeratyoy Apr 26, 2021
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2 changes: 2 additions & 0 deletions openml/datasets/dataset.py
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Original file line number Diff line number Diff line change
Expand Up @@ -629,6 +629,8 @@ def _encode_if_category(column):
elif array_format == "dataframe":
if scipy.sparse.issparse(data):
return pd.DataFrame.sparse.from_spmatrix(data, columns=attribute_names)
elif isinstance(data, np.ndarray):
return pd.Series(data)
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else:
data_type = "sparse-data" if scipy.sparse.issparse(data) else "non-sparse data"
logger.warning(
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