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[BUG] LightGBM Booster 'objective' Parameter Membership #2469

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ngupta20 opened this issue Mar 30, 2022 · 0 comments
Closed

[BUG] LightGBM Booster 'objective' Parameter Membership #2469

ngupta20 opened this issue Mar 30, 2022 · 0 comments

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@ngupta20
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ngupta20 commented Mar 30, 2022 •
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Description
A LightGBM Booster does not necessarily have 'objective' in its param attribute dictionary. The documented default behavior in LightGBM is to assume regression without auto-setting the 'objective' key in the Booster.params dictionary if 'objective' is missing from param (a dictionary passed into the Training API function train).

Reproduction
The following is a link to a notebook containing details for error reproduction and a view of the stack trace:
Notebook for Reproduction

Thanks in advance to @slundberg and all active contributors for being so helpful!

Nandish Gupta
Data Science Engineer, SolasAI
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[TREE EXPLAINER] LightGBM Booster 'objective' Parameter Membership
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@ngupta20