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How to modify the code in updater_histmaker to release monotonic constraint? #4074

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Liuhaoge opened this issue Jan 21, 2019 · 1 comment
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How to modify the code in updater_histmaker to release monotonic constraint? #4074

Liuhaoge opened this issue Jan 21, 2019 · 1 comment

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@Liuhaoge
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I didn't see the parameter about monotonic constraint in newest XGBoost4J-Spark, but I need to add that function, who can teach me how to modify the code in updater_histmaker, Thanks.
@trivialfis
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Monotonic constrains is only supported by hist, exact and gpu_hist. Currently hist is being ported to distributed environment in this PR: #4011 . You might want to check it out. :)

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@trivialfis @Liuhaoge