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The passed model is not callable and cannot be analyzed directly with the given masker! Model: None

When i am using RandomForestRegressor or XGBoost, there is no problem like this. Since i am using Relevance Vector Regression i got this error.

from sklearn_rvm import EMRVR
model_rvr=EMRVR(kernel="linear").fit(X, y)
explainer = shap.Explainer(model_rvr)
Exception: The passed model is not callable and cannot be analyzed
directly with the given masker! Model: None
Also same problem as Exception: The passed model is not callable and cannot be analyzed directly with the given masker
For Relevance Vector Regression => https://sklearn-rvm.readthedocs.io/en/latest/index.html
Any idea ?
                SHAP is calculation intensive. Lundberg has made available quick shortcuts for certain algos like trees or neural networks, but in general, where the shortcuts are not available, you have to use KernelExplainer or ExactExplainer
– Sergey Bushmanov
                Feb 25, 2022 at 16:21
I have had the same issue with a different model. The solution that worked for me was to use KernelExplainer instead of explainer. Additionally you need to use the model.predict function instead of just the model.
So your code should be:
from sklearn_rvm import EMRVR
model_rvr=EMRVR(kernel="linear").fit(X, y)
explainer = shap.KernelExplainer(model_rvr.predict, X)
        
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