CiP ocrdiff2 in P1
This is piggy's manual classification of each change type which occurs in the Perpetual P1 dataset. The green lines are 1-degree polynomial least squares fit to the log-log data. Think of them as the average or expected value.
These are changes which should not be counted as part of proofing.
These are changes which go monotonically downward.
These changes have a general downward trend with no apparent floor.
These changes may not go down, but they are gone within a few rounds. It appears that P1 handles these almost completely.
These changes go down for a few rounds then reach a noise floor, appearing to make no further progress.
These changes immediately reach a noise floor or are otherwise obvious errors.
These changes are too rare to make generalizations about.