All shap values were NA. about fastshap HOT 4 CLOSED

rf is a Multiclass classification model，Can you tell me how to calculate the shap value? Thank you vary much！

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Hi @hyr13579 thank you for posting an issue. However, without a reproducible example to run on my end, I can’t do much to help diagnose your issue. Please post a fully reproducible example and consider using the reprex package.

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Thank you. I changed the code. It worked.
shap<- explain(rf,
X = as.data.frame(train_data),
nsim = 100,
pred_wrapper = function(model, newdata){
as.data.frame(predict(model, newdata, type = "prob")) %>% pull(1)})
When I run the above code, all the shap values I get are number.

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Glad you got it to work!

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