[tor-bugs] #13640 [Ooni]: Set upper bound in comparison with the control in the bridge reachability timeline

[Tor Bug Tracker & Wiki]

#13640: Set upper bound in comparison with the control in the bridge reachability
timeline
---------------------+-------------------------
 Reporter:  hellais  |          Owner:  hellais
     Type:  defect   |         Status:  new
 Priority:  normal   |      Milestone:
Component:  Ooni     |        Version:
 Keywords:           |  Actual Points:
Parent ID:           |         Points:
---------------------+-------------------------
 In the bridge reachability exported data format we compare the experiment
 measurement with the closest measurement that was done from the control
 vantage point.

 The problem with the current approach is that in some cases the closest
 measurement (on the time scale), may be various days in the future or in
 the past leading to inconsistent results (we mark them as blocked, while
 they may have been offline at that time).

 To avoid this we should set an upper bound on how distant the control can
 be as a maximum value and if there is no control measurement that is close
 enough we should say that we can't conclude anything (perhaps mark it with
 some distinctive color).

 The function in question is the following:
 https://github.com/TheTorProject/ooni-
 pipeline/blob/master/ooni/pipeline/measurements.py#L4

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13640>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online