Artelt

Artelt's Heuristic Counterfactual Method

Artelt's method uses heuristics for fast counterfactual generation.

Variants

• Artelt: Base implementation
• Heuristic20: Optimized variant with 20 heuristics

Usage

from counterfactuals.cf_methods.local_methods import Artelt

method = Artelt(
    gen_model=gen_model,
    disc_model=classifier,
    disc_model_criterion=criterion,
    device="cuda"
)

result = method.explain(
    X=instance,
    y_origin=0,
    y_target=1,
    X_train=X_train,
    y_train=y_train
)

API Reference

Artelt

Artelt(disc_model, **kwargs)

Bases: BaseCounterfactualMethod, LocalCounterfactualMixin

Source code in counterfactuals/cf_methods/local_methods/artelt/artelt.py

def __init__(self, disc_model: PytorchBase, **kwargs) -> None:
    self.disc_model = disc_model
    self.density_estimators = {}
    self.kernel_density_estimators = {}
    self.ellipsoids = {}
    self.cf = {}