Adgroup and Keyword Bidding: Label adgroups & keywords as you process them, so that you don't duplicate bid adjustments across time ranges.

[Czarto]

This would allow us to have a more real sliding time scale. We would basically only make a single bid adjustment based on the most recent statistically significant time range.

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Clear keyword flags
Start with a 7 day lookback window
-- For each keyword:
----- Compare keyword performance vs AdGroup performance
----- If statistically significant difference, flag (or unflag) keyword so that it is not processed in a later scan.
Repeat with a 14 day lookback, 30 day, 1 year, etc...
Clear keyword flags