I'm using mice
in R to impute missing values. If I understand correctly, mice
specifies a fully conditional model to draw new values from some posterior distribution to fill the gaps.
Since my data are split into a train and test set, I don't think I can just impute the entire data set, as this would leak information from the test set. However, it seems wasteful to start the entire imputation procedure all over again, especially since the test set is smaller.
Is there a way to re-use the learned model on the test set?