CrashRateDenominatorScenario

Statistics scenarios · Implementation: mlsysim/engine/scenario_definitions/statistics.py.

Construct this scenario with keyword inputs. The fields below show the types and defaults declared by this class.

A reported before-and-after crash rate and the same comparison on the cohort whose exposure is complete (rates per million miles).

Notes

Equation: Each fractional change is after divided by before minus one; the denominator choice remains explicit.

Assumptions: Before/after rates are comparable within each supplied denominator definition.

Excludes: Causal treatment effects and correction for missing exposure beyond the supplied cohort rates.

References

Derivation: Each fractional change is after divided by before minus one; the denominator choice remains explicit. Individual property contracts identify the exact accounting expression or reusable calculation. Registry entries supply the scenario inputs; this class does not turn them into measured outcomes.

Examples

Evaluate a named scenario using its declared inputs.

>>> from mlsysim import Scenarios
>>> scenario = Scenarios.AutosteerCrashRateDenominator
>>> round(float(scenario.reported_change), 4)
-0.3846