[HOT] How to become a validator (a suggestion)
graham
graham at klunky.co.uk
Wed Apr 6 02:07:10 UTC 2016
Thanks for you feedback John and Blake,
I have tried to pull out some of the points raised here, for my
understanding and perhaps for others:
There are different standards of mapping and to some extent different
standards of validation needed, depending on the project.
In-country knowledge of the country can effect the quality of
mapping/validation.
A good mapper does not mean that their are a good validator, different
skill sets are needed.
The capacity to map/validate is also dependant to some degree on the the
quality of the video system and screen one is using.
There seems to be a difference of quality of mapping depending on the
software used: JOSM vs. iD. Is this an issue to be addressed?
Was it suggested that coaching is a good way for people to become good
validators?
Certain projects could do with a certified validator but naturally to
have a "badge" is not for everybody.
A link to validating guidelines
http://wiki.openstreetmap.org/wiki/OSM_Tasking_Manager/Validating_data
Please say if I missed and misrepresented your points.
Regards,
Graham
On 5/4/2016 21:49, john whelan wrote:
> I think the point was that that there are different standards of
> mapping and to some extent validation as well. In Nepal we had time
> and resource constraints and I must confess I took some short cuts and
> didn't do a through a job as could have been done. Sometimes it's a
> judgement call and I think as you and I have discussed sometimes some
> validators do an excellent job but check rather more than either of us
> would when validating.
>
> I've even heard a whisper of a validator taking one look at someone's
> work and zapping it and just remapping as it was quicker but of course
> that never happens in OSM and would never be documented.
>
> Cheerio John
>
> On 5 April 2016 at 09:36, Blake Girardot <bgirardot at gmail.com
> <mailto:bgirardot at gmail.com>> wrote:
>
>
>
> On 4/5/2016 3:15 PM, john whelan wrote:
>
> Blake thought my methods of validation in Nepal left much to be
> desired.
>
>
> That sounds a little strong :) I forget the question I had or the
> comment, but after talking with you I was good with it and agreed
> is all I remember.
>
> >I agreed but given that 70% of the mappers were new even the
>
> basic validation I did improved the data quality quickly.
>
>
> This I 100% agree with.
>
> Cheers,
> Blake
>
>
> I also had a
>
> couple of mappers who were visually checking tiles and finding
> 30% more
> buildings sometimes. Which comes back to the quality of the video
> system and screen you’re using. “Why does your laptop show
> the image in
> JOSM better than mine in iD?” The lap top I was using was an
> old Dell
> professional grade one and my desktop screen at home shows an even
> clearer image. So the equipment the validator has available
> might be an
> important factor on the quality of the validation.
>
> To me validation is a form of coaching being good at something
> doesn’t
> mean you make a good coach. To me Maperthons are a source of
> a dozen
> new mappers and really questionable data. The faster we can
> get in and
> give feedback the better. When you need to add 50 settlements
> to a tile
> it takes resources and to do this I’ve used sensible mappers
> with a
> month’s experience and delegated. If its just
> highway=unclassified and
> landuse=residential that’s fine. I’ve also seen mappers with
> a thousand
> edits to their name who don’t make good validators, the
> project asks for
> settlements and connecting highways, they like to map all the
> tracks as
> well. I’ve seen tiles invalidated for missing things that
> were not
> requested in the project instructions.
>
> It also needs tact, a European mapper who has been mapping
> locally will
> almost certainly use the wrong tags in Africa for highways.
> They’re
> high quality mappers of the type Africa needs but invalidating
> the tile
> because the tags are wrong may not help with the retention rates.
>
> http://wiki.openstreetmap.org/wiki/OSM_Tasking_Manager/Validating_data
> is a start, I’m not certain I agree with every statement but
> it’s a good
> start.
>
> There is a problem with iD mappers they tend to have more
> crossing ways
> and highways that almost meet than others. Probably because
> there is no
> easy way to check for these in iD. So whilst I would comment JOSM
> validation detected six crossing ways normally, if I know
> they’re an iD
> editor I just correct and don’t comment.
>
> If it’s a more complex project, map and tag everything in
> sight I don’t
> even bother validating these days. I’ll let someone else with
> more
> experience than I go and do it. I only have 8,000+ edits to
> my name.
> These projects certainly could do with a certified validator
> and to be
> honest I have no interest in getting a badge.
>
> Cheerio John
>
> On 5 April 2016 at 05:37, graham <graham at klunky.co.uk
> <mailto:graham at klunky.co.uk>
> <mailto:graham at klunky.co.uk <mailto:graham at klunky.co.uk>>> wrote:
>
> Dear Hi,____
>
> __ __
>
> With the subject of validators in that last few emails,
> and past emails thread discussing how to know when some one
> can start validating or not. How much experience does one
> need? One may think that they are good, but other may not etc..
> ____
>
> __ __
>
> So, I thought to just suggest an idea. I am not sure what
> people might think about it, maybe it has already been
> discussed before.
> Maybe the issue has been solved already.____
>
> __ __
>
> The idea:____
>
> I think that maybe if there was a process to become
> officially recognised as an"Validator", then it would be a
> "position" worth achieving, it would make it a challenge. For
> now, I do not think that there is any solid pre-requisite to
> be a validator?____
>
> __ __
>
> Below I am suggesting a potential avenue to become an
> official validator:____
>
> __ __
>
> 1) To complete a minimum number of tiles, as proof of
> commitment to HOT and direct experience with HOT mapping
> (regardless of one's professional career), then 2) to take a
> short test of proficiency.____
>
> __ __
>
> Details:____
>
> 1) Can members the HOT team determine the number of tiles
> each user has completed? I know that more that one user can
> complete one tile, but perhaps if one user completes a high
> percentage of a tile (of all the points, line, and polygons),
> that would be considered a "complete tile" for this purpose.
> As for another users then reworking the tile, this is another
> discussion point.____
>
> __ __
>
> 2)The test might be to review a number of tiles from
> previous projects and they need to comment on the quality of
> the digitalisation and complete any reworking that is needed.
> A minimum number of tiles need to be correct, (to a certain
> standard), in order to pass the test. In each test, a random
> subset of tiles for a complete selection of tiles could be
> used, so that not cheating could occur.____
>
> __ __
>
> __ __
>
> Additionally, these official validators could have a
> symbol next to their users names. This way, when a mapper asks
> for advise regarding their mapping, the mapper would know if a
> "validator" is responding or not.____
>
> __ __
>
> Just an idea...____
>
> __ __
>
> Regards,____
>
> __ __
>
> Graham____
>
>
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