back compatibility

[yudeng2022]

Hi I trained a ngboost model under python 3.8, and saved the model using joblib. Now I want to migrate to python 3.12. Model retrain is not an option. I want to load the saved model under python 3.12 but got an error:

ValueError: node array from the pickle has an incompatible dtype:
- expected: {'names': ['left_child', 'right_child', 'feature', 'threshold', 'impurity', 'n_node_samples', 'weighted_n_node_samples', 'missing_go_to_left'], 'formats': ['<i8', '<i8', '<i8', '<f8', '<f8', '<i8', '<f8', 'u1'], 'offsets': [0, 8, 16, 24, 32, 40, 48, 56], 'itemsize': 64}
- got     : [('left_child', '<i8'), ('right_child', '<i8'), ('feature', '<i8'), ('threshold', '<f8'), ('impurity', '<f8'), ('n_node_samples', '<i8'), ('weighted_n_node_samples', '<f8')]

Is there anyway around it without retrain the model under the new environment?

[grhaonan]

Is this project still alive ??? :)

[smart-patrol]

I am getting this error as well. SHAP 0.40.0 Transformers 4.12.3

Will try downgrading shap...

[grhaonan]

Thanks for sharing @smart-patrol , please also help to let me know if downgrading works, really appreciate it.

[alessandrodanesi]

same here

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