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Ran 24 May 2026 07:16AM UTC

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Committed 24 May 2026 07:09AM UTC coverage: 83.695% (-0.3%) from 84.013%

Job # 26354903864.2

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push

github

Committed by

cpmpercussion

Commit Message

Fix object-dtype crash when training on a single-performance dataset

np.array([one_2d_array], dtype=object) collapses into a 2D object
array where every cell is a Python float, so slices from it inherit
dtype=object and Keras rejects them with "Invalid dtype: object".
Explicitly passing dtype=np.float32 to the np.array() calls in
PredictiveMusicMDRNN.train() forces the correct type regardless of
how the corpus was stored.

The existing test suite only exercises multi-performance datasets
(heterogeneous array lengths), where numpy stores each performance
as an intact float32 array inside the object array, hiding the bug.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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