lift_chart

superglm.lift_chart(

y_obs,

y_pred,

sample_weight=None,

exposure=None,

*,

n_bins: int = 10,

ax: Axes | None = None,

) → LiftChartResult

Lift chart: observed vs predicted across equal-exposure quantile bins.

Parameters:

y_obsarray-like

Observed response values.

y_predarray-like

Predicted response values.

sample_weightarray-like or None

Observation weights for aggregation.

exposurearray-like or None

Exposure measure for rate models. When provided, bins are equal-exposure quantiles and averages are exposure-weighted.

n_binsint

Number of quantile bins.

axmatplotlib Axes or None

If provided, plot onto this axes (figure in result will be None).

Returns:

LiftChartResult

Contains a bins DataFrame and an optional figure.