InactiveHyperparameterSetError encountered when solving the HierarchicalGoldstein problem.

[reppy4620]

Hi

I am currently attempting to compare different methods using the HierarchicalGoldstein problem.
However, I have encountered an error as detailed below.
Could you please advise on how to resolve this issue?

problem = HierarchicalGoldstein()
ds = problem.design_space

ego = EGO(
    n_iter=30,
    criterion="EI",
    random_state=42,
    n_doe=3,
    surrogate=KRG(
        design_space=ds,
        categorical_kernel=MixIntKernelType.HOMO_HSPHERE,
        hierarchical_kernel=MixHrcKernelType.ALG_KERNEL,
    ),
)

best_x, best_y, _, history_x, history_y = ego.optimize(fun=problem)

Error

InactiveHyperparameterSetError: Hyperparameter is inactive but has a value set as 0.5.
x8, Type: UniformInteger, Range: [0, 2], Default: 1

Thank you.

[Paul-Saves]

Hello,
ConfigSpace has a lot of bugs, mostly related to Exception like this one: #522
The latter appeared in versions 0.7 and higher so we sticked to ConfigSpace 0.6.1

The error you are mentioning should dissapear if you install ConfigSpace 0.6.1. I guess you installed 0.7.1 or 0.7.2...

[Paul-Saves]

Also, ForbiddenValueConstraints are not compatible with OrdinalVariable (another bug in ConfigSpace....). For now, I'll add a warning!

[reppy4620]

Thank you for your quick response.
By reinstalling configspace==0.6.1 instead of 0.7.1, which was installed previously, the error has been resolved.
It was of great help.