Replacement for Models.GPKG

[AngelFP]

The latest release removes the GPKG model, and suggests using the newer BOTORCH_MODULAR instead (#2316). However, I am not sure how to build a replacement for GPKG using this approach.

Until now I've used GPKG with the Service API for multifidelity optimization, creating a GenerationStep as follows:

GenerationStep(
    model=Models.GPKG,
    num_trials=-1,
    model_kwargs={
        "cost_intercept": cost_intercept
    },
)

What would be the equivalent way of doing this with BOTORCH_MODULAR? I couldn't figure it out from the examples I saw in the documentation.

Best,
Ángel.

[sdaulton]

You can specify the GenerationStep as

GenerationStep(
    model=Models.BOTORCH_MODULAR,
    num_trials=-1,
    model_kwargs={
        "botorch_acqf_class": qMultiFidelityKnowledgeGradient,
    },
    model_gen_kwargs={
        "model_gen_options": {Keys.ACQF_KWARGS: {Keys.COST_INTERCEPT: cost_intercept}}
    },
)

[AngelFP]

Works great, thanks!