Hi R experts,
I used biglm to construct a model (which has categorical variables).
When I run predict on the model output on a new data (for testing) or on the
same data, I get only NA's. I'm able to run predict with some other models
constructed with biglm. One reason I suspect is that the model itself has a
few undefined terms (NA's). I'm wondering if there's any way to ignore the
undefined terms (treat them as 0).
Thanks in advance,
Pradheep
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