Github user iyerr3 commented on the issue:
https://github.com/apache/madlib/pull/295
Considering the above situation, I suggest the variable importance values
not be scaled to sum to 100. We can make the normalization within
`get_var_importance` just for the reporting (which is the behavior in rpart).
In other words, the output table would keep the original values (for DT and RF)
but the helper function would rescale during the report for ease in reading the
values. ---
