Problem with saving trained isolation forest when `categ_cols` is not None. about isotree HOT 6 CLOSED

This is solved in the latest version (0.2.7-2). pip install -U --no-cache isotree.

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Actually this is a different issue, will fix, but in the meantime, if you pass it as a list of non-numpy integers it should work.

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It actually doesn't, it seems to be an issue with NumPy>=1.18:
numpy/numpy#19069

Works in older NumPy versions though.

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Fixed version now uploaded to PyPI.

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Thank you David. I had a quick question, what is the difference in treatment of categorical vs numerical features in the isolation forests?

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Same as in other decision tree software. You can check the docs and the reference papers for more details.

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