Jiaming Yuan 972730cde0
Use matrix for gradient. (#9508)
- Use the `linalg::Matrix` for storing gradients.
- New API for the custom objective.
- Custom objective for multi-class/multi-target is now required to return the correct shape.
- Custom objective for Python can accept arrays with any strides. (row-major, column-major)
2023-08-24 05:29:52 +08:00
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2023-08-24 05:29:52 +08:00
2020-12-03 00:05:18 -08:00
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