Hi Martin,
It is uneasy to build a statistic that would reflect the various activities.
Coordination through the Task manager is only one part of the mapping done for
projects. It might be ok a mapathon where you worked only coordinating through
the Task Manager. Aslo, Hashtags are not always added to the changeset comment.
The best way to reflect the contributor activity is to go through the history
and extract changesets corresponding to a bbox closed to the each Task Manager
extent and corresponding to the period of the project. The number of changesets
is also a gross estimate of the contributor efforts. How to compare a
contributor that adds 100 buildings, one changeset for each (we see this often
with new contributors) with a contributor that has a few thousands objects in
one edit.
About the grouping, you have main activities like the Ebola outbreak. At the
same time you can have various mapping projects that contribute to this action.
For example, a missing map party on Ebola, where should we classify it.
Also, the Task Manager represents only one part of contributions. As an
example, for the Ebola outbreak the experienced mappers move around and correct
/ enhance various elements of the map without coordinating through the Tasking
manager.
Pierre
De : Martin Dittus <mar...@dekstop.de>
À : hot <hot@openstreetmap.org>
Envoyé le : Lundi 23 mars 2015 14h59
Objet : [HOT] Most "active" HOT projects since March 2014
Hallo all,
Here are two basic rankings of HOT project activity in the last year, based on
map contributions in the past 12 months. Discussion on IRC suggested that this
data might be useful to others, so I’m sharing it with the list.
HOT projects ranked by edit activity from Mar 2014 - Feb 2015 (inclusive):
https://docs.google.com/spreadsheets/d/12TjMDsgPoEQadiUWbpKjotTMYKPo5NY4W7EDipHnE7Y/edit?usp=sharing
The first tab shows a ranking of all tasking manager projects by number of
changesets, the second by number of contributors.
This data is not yet captured by the tasking manager: I’m only looking at
participation that actually resulted in changes on the map. To this purpose I
identify changesets in the OSM edit history that were tagged with a HOT project
id.
I’m curious what other people can read from this data, e.g. whether it matches
your intuitions of popular HOT activities.
Of course these kinds of rankings are of dubious utility — projects are rarely
directly comparable in their scope, and larger activations may be structured in
all kinds of ways. Same goes for changesets as a metric.
Does anyone have good suggestions for how one could meaningfully group the
hundreds of HOT projects? E.g. I could aggregate stats for all
#MissingMaps/#MapLesotho/Ebola Outbreak projects, are there similar tags I
should be looking for? Are these actually meaningful distinctions when looking
at contribution outcomes?
Any requests for other stats? I’d be happy to produce more, provided it’s
feasible. No promises :)
Greetings from London,
Martin Dittus
---
If you’re interested in the details — there are a number of challenges in
producing such data, and some caveats. Mostly it has to do with the
unstructured nature of changeset comments.
I’m likely undercounting: automated iD changeset comments were only introduced
in mid-August 2014, see http://www.openstreetmap.org/user/mcld/diary/24123 —
I’m not identifying earlier contributions that have not been tagged manually.
I’m likely undercounting: HOT projects use multiple tagging conventions for
changeset comments, most prominently #hotosm-project-938 and #hotosm-task-907
but also #hotosm-Ebola-892 and similar. I'm being quite lenient in what I
expect but may not catch all projects.
I also noticed the tag #hotosm-cap103 which is not actually referring to a
project ID, that's an activation ("Projet Cap103”).
And — I don’t have project titles for projects that aren’t public any longer.
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