Source code for immuneML.ml_methods.RandomForestClassifier

from sklearn.ensemble import RandomForestClassifier as RFC

from immuneML.ml_methods.SklearnMethod import SklearnMethod
from scripts.specification_util import update_docs_per_mapping

[docs] class RandomForestClassifier(SklearnMethod): """ This is a wrapper of scikit-learn’s RandomForestClassifier class. Please see the `scikit-learn documentation <>`_ of RandomForestClassifier for the parameters. Note: if you are interested in plotting the coefficients of the random forest classifier model, consider running the :ref:`Coefficients` report. For usage instructions, check :py:obj:`~immuneML.ml_methods.SklearnMethod.SklearnMethod`. YAML specification: .. indent with spaces .. code-block:: yaml my_random_forest_classifier: # user-defined method name RandomForestClassifier: # name of the ML method # sklearn parameters (same names as in original sklearn class) random_state: 100 # always use this value for random state n_estimators: [10, 50, 100] # find the optimal number of trees in the forest # Additional parameter that determines whether to print convergence warnings show_warnings: True # if any of the parameters under RandomForestClassifier is a list and model_selection_cv is True, # a grid search will be done over the given parameters, using the number of folds specified in model_selection_n_folds, # and the optimal model will be selected model_selection_cv: True model_selection_n_folds: 5 # alternative way to define ML method with default values: my_default_random_forest: RandomForestClassifier """ def __init__(self, parameter_grid: dict = None, parameters: dict = None): parameters = parameters if parameters is not None else {} if parameter_grid is not None: parameter_grid = parameter_grid else: parameter_grid = {"n_estimators": [10, 50, 100]} super(RandomForestClassifier, self).__init__(parameter_grid=parameter_grid, parameters=parameters) def _get_ml_model(self, cores_for_training: int = 2, X=None): params = self._parameters.copy() params["n_jobs"] = cores_for_training return RFC(**params)
[docs] def can_predict_proba(self) -> bool: return True
[docs] def get_params(self): params = self.model.get_params(deep=True) params["feature_importances"] = self.model.feature_importances_.tolist() return params
[docs] @staticmethod def get_documentation(): doc = str(RandomForestClassifier.__doc__) mapping = { "For usage instructions, check :py:obj:`~immuneML.ml_methods.SklearnMethod.SklearnMethod`.": SklearnMethod.get_usage_documentation("RandomForestClassifier"), } doc = update_docs_per_mapping(doc, mapping) return doc