arch.univariate.ConstantVariance.bounds

ConstantVariance.bounds(resids: ndarray[Any, dtype[float64]]) list[tuple[float, float]][source]

Returns bounds for parameters

Parameters:
resids: ndarray[Any, dtype[float64]]

Vector of (approximate) residuals

Returns:

bounds – List of bounds where each element is (lower, upper).

Return type:

list[tuple[float,float]]