getLearnerCPO

[<code><a rd-options="mlr:makeLearner" href="/link/Learner?package=mlrCPO&version=0.3.2&to=mlr%3AmakeLearner" data-mini-rdoc="mlr:makeLearner::Learner">Learner</a></code>]
The learner to query

learner

[<code>logical(1)</code>]
Whether to warn about CPOs that could not be retrieved.

warn.buried

Returns the (outermost) chain of <code><a rd-options="" href="/link/CPO?package=mlrCPO&version=0.3.2" data-mini-rdoc="mlrCPO::CPO">CPO</a></code>s that are part of a <code><a rd-options="mlr:makeLearner" href="/link/Learner?package=mlrCPO&version=0.3.2&to=mlr%3AmakeLearner" data-mini-rdoc="mlr:makeLearner::Learner">Learner</a></code>. This is useful to inspect the
preprocessing done by a learner object.
If there are hidden CPOs (e.g. if a learner has CPOs, but is then wrapped by a <code>TuneWrapper</code>),
this function can not retrieve these CPOs, but it will emit a warning if <code>warn.buried</code> is <code>TRUE</code>.
The retrieved CPOs will have the hyperparameter set according to the hyperparameter settings of the Learner.
This function is complementary to <code><a rd-options="" href="/link/getLearnerBare?package=mlrCPO&version=0.3.2" data-mini-rdoc="mlrCPO::getLearnerBare">getLearnerBare</a></code>.

Toolset that enriches 'mlr' with a diverse set of preprocessing
operators. Composable Preprocessing Operators ("CPO"s) are first-class
R objects that can be applied to data.frames and 'mlr' "Task"s to modify
data, can be attached to 'mlr' "Learner"s to add preprocessing to machine
learning algorithms, and can be composed to form preprocessing pipelines.

Martin Binder

mlrCPO

Composable Preprocessing Operators and Pipelines for Machine
Learning

Bernd Bischl

Michel Lang

Lars Kotthoff

getLearnerCPO function

[<code><a rd-options='mlr:makeLearner' href='Learner'>Learner</a></code>]
The learner to query

Returns the (outermost) chain of <code><a rd-options='' href='CPO'>CPO</a></code>s that are part of a <code><a rd-options='mlr:makeLearner' href='Learner'>Learner</a></code>. This is useful to inspect the
preprocessing done by a learner object.
If there are hidden CPOs (e.g. if a learner has CPOs, but is then wrapped by a <code>TuneWrapper</code>),
this function can not retrieve these CPOs, but it will emit a warning if <code>warn.buried</code> is <code>TRUE</code>.
The retrieved CPOs will have the hyperparameter set according to the hyperparameter settings of the Learner.
This function is complementary to <code><a rd-options='' href='getLearnerBare'>getLearnerBare</a></code>.

getLearnerCPO: Get the CPO Associated with a Learner

Description

Usage

Arguments

Value

See Also