PatsyFormula

class chainladder.PatsyFormula(formula=None)

A sklearn-style Transformer for patsy formulas.

PatsyFormula allows for R-style formula preprocessing of the design_matrix of a machine learning algorithm. It’s particularly useful with the DevelopmentML and TweedieGLM estimators.

Parameters:

formula: str

A string representation of the regression model X features.

Attributes:

design_info_:

The patsy instructions for generating the design_matrix, X.

fit(X, y=None, sample_weight=None)

transform(X)

Inherited Methods

PatsyFormula.fit_transform	Fit to data, then transform it.
PatsyFormula.get_metadata_routing	Get metadata routing of this object.
PatsyFormula.get_params	Get parameters for this estimator.
PatsyFormula.set_output	Set output container.
PatsyFormula.set_params	Set the parameters of this estimator.