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Merge branch 'main' into dependabot/github_actions/actions/setup-python-4

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zsk 2022-11-01 16:07:01 -04:00 committed by GitHub
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11
flaml/model.py
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@ -921,7 +921,16 @@ class TransformersEstimatorModelSelection(TransformersEstimator):
class SKLearnEstimator(BaseEstimator):
"""The base class for tuning scikit-learn estimators."""
"""
The base class for tuning scikit-learn estimators.
Subclasses can modify the function signature of ``__init__`` to
ignore the values in ``config`` that are not relevant to the constructor
of their underlying estimator. For example, some regressors in ``scikit-learn``
don't accept the ``n_jobs`` parameter contained in ``config``. For these,
one can add ``n_jobs=None,`` before ``**config`` to make sure ``config`` doesn't
contain an ``n_jobs`` key.
"""
def __init__(self, task="binary", **config):
super().__init__(task, **config)

2
website/docs/Use-Cases/Task-Oriented-AutoML.md
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@ -169,7 +169,7 @@ class MyRegularizedGreedyForest(SKLearnEstimator):
return space
```
In the constructor, we set `self.estimator_class` as `RGFClassifier` or `RGFRegressor` according to the task type. If the estimator you want to tune does not have a scikit-learn style `fit()` and `predict()` API, you can override the `fit()` and `predict()` function of `flaml.model.BaseEstimator`, like [XGBoostEstimator](../reference/model#xgboostestimator-objects).
In the constructor, we set `self.estimator_class` as `RGFClassifier` or `RGFRegressor` according to the task type. If the estimator you want to tune does not have a scikit-learn style `fit()` and `predict()` API, you can override the `fit()` and `predict()` function of `flaml.model.BaseEstimator`, like [XGBoostEstimator](../reference/model#xgboostestimator-objects). Importantly, we also add the `task="binary"` parameter in the signature of `__init__` so that it doesn't get grouped together with the `**config` kwargs that determines the parameters with which the underlying estimator (`self.estimator_class`) is constructed. If your estimator doesn't use one of the parameters that it is passed, for example some regressors in `scikit-learn` don't use the `n_jobs` parameter, it is enough to add `n_jobs=None` to the signature so that it is ignored by the `**config` dict.
2. Give the custom estimator a name and add it in AutoML. E.g.,