Issue with DALEX

[instantkaffee]

I have fitted an xgboost model.

Use of the object and its fit field in explain() function of DALEX is not possible.

xgb= boost_tree(mode = "regression") %>%
  set_engine(engine = "xgboost") %>%
  fit(formula = mpg ~ ., mtcars)

expl= explain(xgb, data = mtcars, y = mtcars$mpg)
variable_importance(expl)

[Error in xgb.DMatrix(newdata, missing = missing) : 
  xgb.DMatrix does not support construction from list](url)

expl= explain(xgb$fit, data = mtcars, y = mtcars$mpg)
variable_importance(expl)

Error in xgb.DMatrix(newdata, missing = missing) : 
  xgb.DMatrix does not support construction from list

Any tips to achieve interop?

[topepo]

My first thought that to use $fit but that doesn't work:

> expl= explain(xgb$fit, data = mtcars, y = mtcars$mpg)
> variable_importance(expl)
Error in xgb.DMatrix(newdata, missing = missing) : 
  xgb.DMatrix does not support construction from list

I would ask @pbiecek

[instantkaffee]

ModelOriented/DALEX#53

[pbiecek]

Thanks!

[github-actions]

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