On 06.10.2016 17:54, Petr Kadlec wrote:
..
Why? I would expect CC0 to be simply relicensable under ODbL (cf.
https://www.gnu.org/licenses/license-list.en.html#CC0). The other way, as
you say, would be more problematical, ODbL-licensed content cannot be
simply imported into CC0-licensed database.
There are (at least) two issues:
- we (OSM) do not allow anonymous contributions and in general expect
imports to be associated with a real natural persons account. Automated
updating would need to clear some further policy and technical hurdles
on top of that.
- we tend to be fairly picky about our sources and have rather strict
policies on use of data that we consider unsuitable. Standard example:
we would consider coordinates derived from a google provided map as not
usable for OSM. I suspect that providing assurance that the original
sources confirm to our criteria would be at least very difficult for
wikidata.
I should point out that some of the above stems from operating in a
different legal and competitive environment than the WMF projects and a
rather different approach to providing end-user services and products,
not just because we want to be difficult.
To end on a positive note: there is a lot of cooperation going on
between OSM and WP/wikidata, particularly in respect to adding wikidata
references to OSM objects and I don't see why, for example, this
couldn't be used for QA purposes like highlighting changes or large
differences in objects locations and other attributes. This would likely
avoid most of the issues noted above.
Simon