Aishwarya Badlani

## Summary Fixes #7141 by removing integer type support from ReduceLogSumExp and ReduceLogSum operators in opset 21. ## Problem The reference implementation crashes when given integer inputs because it tries...

Fix nested data conversions error in parquet loading (fixes #7793)

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Fixes #7793 ## Problem Loading datasets with deeply nested structures (like `metr-evals/malt-public`) fails with: ArrowNotImplementedError: Nested data conversions not implemented for chunked array outputs This occurs when parquet files contain...

DOC: Update derivation equations of positive Group Lasso penalty

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## Context of the PR ## Contributions of the PR - Complete mathematical derivation for the subdifferential case w = 0 including full Lagrangian formulation - Rigorous KKT conditions and...

ENH: Add DoubleQuadratic datafit for asymmetric loss (#272)

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## Context of the PR ## Summary Implements DoubleQuadratic datafit for asymmetric quadratic loss as requested in issue #272. ## Changes - New `DoubleQuadratic` class in `skglm/datafits/_double_quadratic.py` - Support for...