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Hello,
I receive the error above after I use this command:
shap_values <- fastshap::explain(model_n, X = trainval, exact = TRUE)
model_n is a multiclassification model fitted with xgboost.
trainval is my train-data
When I run this set-up for binary classification, the shap values are calculated correctly.
When I run this set-up for multiclass classification, the error above is generated.
Do you have any idea what can be the cause?
Thanks a lot!