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Cloning CalibratedClassifierCV with prefit base_estimator #6451

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glouppe opened this issue Feb 25, 2016 · 5 comments

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@glouppe
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@glouppe glouppe commented Feb 25, 2016

I recently stumbled upon this issue, I needed to clone a CalibratedClassifierCV object when the latter is defined on top on a pre-fit (cv="prefit") base estimator. Unfortunately, because of the semantic of the clone interface, this cannot be achieved without "unfitting" the pre-fit base estimator.

I think this is somehow related to @jnothman long standing frozen estimator discussion.

@glouppe glouppe added Bug API labels Feb 25, 2016
@GaelVaroquaux

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@GaelVaroquaux GaelVaroquaux commented Feb 25, 2016

@amueller

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@amueller amueller commented Feb 26, 2016

@GaelVaroquaux how would that help?

@amueller amueller modified the milestone: 0.19 Sep 29, 2016
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@amueller amueller commented Oct 5, 2016

Not sure but in a recent discussion I though "hey there is no way this works with current API"... and then today I see this issue that I totally forgot about that.

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@tengerye tengerye commented Oct 6, 2018

Hi, I have the same problem recently, so what's plan? Since this issue was opened two years ago, any problem so far? I am familiar with Transfer Learning as well and you can verify that on my repositories. I am glad to help.

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@jnothman jnothman commented Oct 7, 2018

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