<html><head>
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</head><body bgcolor="#FFFFFF" text="#000000">Do we really need yet
another tool to find errors in HOT mapping?<br>
<br>
Before the new version of task manager I did a lot of validation in HOT.<br>
<br>
One of the problems on the data quality side is new mappers just don't
completely map a tile and mark it done for validation. Which means
finding their new work is not easy.<br>
<br>
If you can give feedback to a new mapper ideally within hours but at the
outside a couple of days it often does correct their mapping behaviour
in the future.<br>
<br>
If its more than a week old you get about a 2% positive reaction.<br>
<br>
At a month they may have already corrected their behaviour or what is
OpenStreetMap again?<br>
<br>
Buildings are a pain to validate. It takes me three times as long to
correct a building as it does to map it correctly using the
building_tool plugin. I don't validate buildings.<br>
<br>
We already have tools to detect overlapping buildings but faced with 500
or a thousand overlapping buildings that first need to be freshly
downloaded then dumped in the to do list and inspected to see which is
the most accurate and some are really bad, Pierre has a tool for
detecting them by the way, I just don't feel motivated.<br>
<br>
The London Mapathons are well organised but many are not. Essentially
the problem mappers map once, possible twice.<br>
<br>
What they need is simpler tools with less choices or room for error.
JOSM with the building_tool plugin works well. I, and others, have used
it with new mappers and all their work was accurate and correctly labelled.<br>
<br>
They don't read the training guides, they just want to map and often the
people giving the training don't know OpenStreetMap. The classic is
"here is a coffee shop so we add shop=coffee." Well no it was inside a
building that I know that sells cups of coffee and snacks but not beans
and it actually should be mapped as amenity=cafe, cuisine=coffee_shop.<br>
<br>
What I have been doing of late is downloading chunks of OpenStreetMap
using <span style="color: rgb(84, 84, 84); font-family: arial,
sans-serif; font-size: small; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal; font-weight:
400; letter-spacing: normal; orphans: 2; text-align: left; text-indent:
0px; text-transform: none; white-space: normal; widows: 2; word-spacing:
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255); text-decoration-style: initial; text-decoration-color: initial;
display: inline !important; float: none;">geofabrik </span>and looking
for problems using JOSM. Highways that cross or don't connect. Hamlets
with the name Hameau, lots of those in French speaking Africa. Highways
with the name road. I've added tags to a few thousand untagged ways.
Connecting highways across a settlement.<br>
<br>
It's not prevention but it does improve the overall quality and
reliability and at the end of the day that is what most end users want.<br>
<br>
Cheerio John<br>
<br>
<span>Christoph Hormann wrote on 2018-10-01 5:14 AM:</span><br>
<blockquote type="cite" cite="mid:201810011114.54456.osm@imagico.de">
<pre wrap="">On Monday 01 October 2018, Nate Smith wrote:
</pre>
<blockquote type="cite"><pre wrap="">Thanks for the comment and questions Frederik. Agreed that quality
and quantity isn’t exactly the same. And I hope that the UI in the
tool hasn’t communicated that this is just about statistics and
quantity - it is more than just a feature counter.
We certainly could say it is a richness monitor, but the goal and
purpose is more than that. [...]
</pre></blockquote>
<pre wrap="">
Well - we can only evaluate the actual tool and its features, we cannot
evaluate intentions behind it.
As it is the tool only measures numbers of features and numbers of tags
(in the form of features missing the tag in question, which is the
same). It communicates to the user that these are only things that
matters: Adding features and adding tags to those features.
So as Frederik says as it is this is not a quality monitoring tool, this
is a quantity monitoring tool.
Apart from that you are probably not aware what the term campaign
communicates in this context. A campaign in the sense of a political
or military campaign is an initiative to impose one's views or
interests on others, swaying people's opinions and influencing their
behaviour in contrast to engaging in an open argument about the best
approach and trying to convince people this way. You should probably
think carefully if this is what you want to communicate here.
</pre>
</blockquote>
<br>
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