MEI: Have a measure of incoming/closed defects vs. existing open

[jensstutte]

Based on this doc.

Incoming(TimeInterval) := NumOpenedDefects(TimeInterval) / NumOpenDefects(Start(TimeInterval))
Closed(TimeInterval)  := NumClosedDefects(TimeInterval) / NumOpenDefects(Start(TimeInterval))

Given that NumOpenDefects(Start(TimeInterval)) is hard to query live, we estimate it by:

NumOpenDefects(Start(TimeInterval)) := NumOpenDefects(End(TimeInterval)) + NumClosedDefects(TimeInterval) - NumOpenedDefects(TimeInterval)

such that if the calculation is run with an end date of the time interval that is close to today we can use the up-to-date values for components and severity without bothering too much for deviations.

[marco-c]

@jensstutte two questions:

• should this be made a percentage as well?
• do we want both weighed and non-weighed or only non-weighed? In the doc you mentioned the weighed, while here you mentioned the non-weighed

[jensstutte]

(Edit: misconception on my side)
Percentage is fine. I switched to non-weighed as this is probably more relatable for who knows their backlogs.

[jensstutte]

(it might be nice to have links in the mail that open a query showing those bugs?)