Question
I have been using OpenX for sometime and I like the service. I’d like to have a better understanding of the campaign reporting tool as I think it could be a valuable report:
1) What does this column represent: “Overall +/-” I often will see a number like “967.91%” What does that tell us?
2) What does this column represent: “Current +/-” I often see a number like: “-1,216.00%” What does that mean? Is is good or bad?
Answers
Current + /-
tells that your campaign delivery is working fine with represented percentage.If it is in negative sign your campaign performence has been degraded in current time only when you are opening.
Example Code
/ The number of impressions that are predicted to happen “today” is the number of impressions delivered so
// far today, multiplied by the total number of impressions delivered yesterday divided by how many of those
// impressions had been delivered so far at the same point in time yesterday
$predictedImpressionsToday = $todaysImpressions * ($yesterdaysImpressions / $yesterdaysImpressionsToSameHourAsNow);
// At this predicted daily rate of delivery, the total impressions that will be delivered is this number
// of impressions multiplied by the days remaining for the campaign, plus how many impressions have been
// delivered before today
$predictedTotalImpressions = ($predictedImpressionsToday * $remainingDays) + $campaignImpressionsToLastNight;
// Calculate and return the percentage difference
$percentDiff = (($predictedTotalImpressions / $desiredImpressions) - 1) * 100;.
Overall +/-
tells the Overall performence of your campaign as above.
Example Code
// The expected campaign delivery percentage is the number of days the campaign has been
// running divided by the total campaign lifetime, assuming even daily delivery
$expectedPercentDelivered = ($runningDays / $campaignDays) * 100;
// The actual campaign delivery percentage is the number of impressions delivered
// divided by the number of impressions booked
$actualPercentDelivered = ($actualImpressions / $desiredImpressions) * 100;
// Calculate and return the percentage difference
$percentDiff = $actualPercentDelivered - $expectedPercentDelivered;
return $percentDiff;