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For fields which are infrequent or added later, do not consider absence of the field use as zero.
This will affect prediction scores.
When field appears used for the first time, all previous rows must get NA for that field. And NA must be treated properly in regression - research this first to see that it works.
The text was updated successfully, but these errors were encountered:
For fields which are infrequent or added later, do not consider absence of the field use as zero.
This will affect prediction scores.
When field appears used for the first time, all previous rows must get NA for that field. And NA must be treated properly in regression - research this first to see that it works.
The text was updated successfully, but these errors were encountered: