[HOT] How newer mappers can help a lot with the validation process

Nick Allen nick.allen.54 at gmail.com
Thu Feb 11 19:31:29 UTC 2016


I think we could do with more information on LearnOSM - the current 
content is http://learnosm.org/en/coordination/review/ & a couple of 
mentions in the Tasking Manager section.

I'm sure there is more information in other sources as well as the wiki 
link http://wiki.openstreetmap.org/wiki/OSM_Tasking_Manager/Validating_data

If you and a couple of other people could put a guide together & run it 
by a few people (Training Working Group?), I'd be happy to take the 
resulting document & format the text to place it on LearnOSM. Grab a few 
screenshots as well - I'll do the formatting, but I don't have time to 
actually write the text at the moment - I can cope with copy & paste & 
then format the outcome.



On 11/02/16 18:29, Russell Deffner wrote:
> Hi all,
> Validation is a ‘beast’ of a discussion that in my opinion has been 
> addressed in two parts: teaching/training validators and technical 
> changes in the Tasking Manager.  I for one completely support building 
> a ‘white-list’ option (or otherwise the option to ‘appoint’ 
> validators) into the TM; however don’t want to ‘spam’ the list too 
> much, so I think this is the ‘most current’ and on-point issue in 
> github: https://github.com/hotosm/osm-tasking-manager2/issues/599
> However, on the training side of things; we have built a 
> ‘higher-level’ type of course for validation here: 
> http://courses.hotosm.org/ but it is specific to HOT Disaster Mapping; 
> there has been talk about a module for ‘general’ validation on 
> LearnOSM, and Nick or someone closer involved with the Training 
> Working Group can probably tell you more about that.
> In either case, I think there is plenty of room for improvement.
> Cheers,
> =Russ
> *From:*Nick Allen [mailto:nick.allen.54 at gmail.com]
> *Sent:* Thursday, February 11, 2016 9:19 AM
> *To:* john whelan
> *Cc:* HOT at openstreetmap.org
> *Subject:* Re: [HOT] How newer mappers can help a lot with the 
> validation process
> There is a wiki article at 
> http://wiki.openstreetmap.org/wiki/OSM_Tasking_Manager/Validating_data
> It needs updating.
> Nick (OSM=Tallguy)
> my phone is responsible for any spelling mistakes!
> On 11 Feb 2016 15:49, "john whelan" <jwhelan0112 at gmail.com 
> <mailto:jwhelan0112 at gmail.com>> wrote:
> In there somewhere in a wiki or some such where we can document 
> validation, what works and why and what to look for?  Perhaps put down 
> some sort of service level agreement ie after validation we are only 
> looking for what is requested in the instructions and for a JOSM 
> validotian to be run.  We expect 97% of settlements to be mapped type 
> thing? That way people who wish to validate have something to feel 
> confident about.
> We need to get more people into validation.
> Thanks
> Cheerio John
> On 11 February 2016 at 09:56, Jo <winfixit at gmail.com 
> <mailto:winfixit at gmail.com>> wrote:
> If such a volunteer becomes more confident after a while, they 
> shouldn't hesitate to actually validate the task, if all was mapped 
> well and they didn't have to add/change much.
> When I look at finished tiles, I start with the intention to validate 
> it. If I have to do too much work on it, I will sometimes simply 
> unlock once again, either leaving a note it's actually complete now.
> If there is still more work than I have time for at that time, it's 
> better to "invalidate", so another mapper knows where more work is needed.
> Polyglot
> 2016-02-11 14:47 GMT+01:00 Blake Girardot <bgirardot at gmail.com 
> <mailto:bgirardot at gmail.com>>:
>     That is a good point John, if anyone does a second look to map in
>     missing buildings in a "completed" task square you should leave a
>     comment on the task square that says you looked over the completed
>     task square and filled in all the missing buildings you could find.
>     For sure it is not a waste of time to review completed task
>     squares, but I agree, it probably only needs one going over before
>     validation.
>     In addition, this is a very helpful way for new mappers to become
>     better mappers and contribute to an urgent priority project to get
>     done well and fast.
>     Tiny task squares help, but stuff still gets missed and often we
>     don't get the validation stage completed in time, no matter how
>     important it is so an informal review makes a big difference if
>     that is what a volunteer wants to do and can contribute.
>     Cheers,
>     Blake
>     On 2/11/2016 2:33 PM, john whelan wrote:
>     I'm not sure this is the best use of our very limited number of
>     mappers.  Just scanning a tile takes time, so the optimum use of
>     mapper
>     time is to have them scan once when they map and have a validator
>     scan once.
>     For a productivity point of view its better to have new mappers split
>     the tiles twice and map a tiny tile completely than have twenty of
>     them
>     go over the same area.  From the same point of view its better to have
>     them map where we have good imagery than map where quote "You may have
>     to squint a bit".  Mapping whilst squinting takes more time to map the
>     same area than mapping where the imagery is good.  No matter where
>     they
>     map it will be useful to someone if not a short term MSF or
>     American Red
>     Cross project and to be honest if something like Ebola crops up having
>     fairly good mapping of existing highways and villages in place before
>     you start helps those projects in the field at least plan out what and
>     where.
>     Cheerio John
>     On 10 February 2016 at 10:28, Blake Girardot <bgirardot at gmail.com
>     <mailto:bgirardot at gmail.com>
>     <mailto:bgirardot at gmail.com <mailto:bgirardot at gmail.com>>> wrote:
>         Hi all,
>         I just want to mention, that new mappers can really help with the
>         validation process by doing what they typically do: Map in
>     roads and
>         buildings but into "Completed" task squares.
>         You do not need to mark a task square "Validated", but just
>         reviewing the completed squares and filling in missing things or
>         fixing up buildings that might not be mapped very well
>     (squaring up
>         the rectangular buildings :) is immensely helpful.
>         I wrote a short OSM Diary entry that says basically the same
>     thing:
>     http://www.openstreetmap.org/user/bgirardot/diary/36235
>         I just thought I would mention it because if you see projects
>     on the
>         Tasking Manager that look "done" just know you can always help
>     a bit
>         more by reviewing "Completed" task squares just to double check
>         nothing was missed even if you do not feel experienced enough to
>         "Validate" a task square.
>         This is especially true for projects where we have made a call for
>         more mappers on the email list or via twitter. Double and triple
>         checks to make sure the mapping in the instructions is actually
>         complete really helps in the process and gets the people on the
>         ground the best data we can possible generate for them.
>         Cheers,
>         Blake
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