I have a couple of questions regarding the Wiki Page ID. Does it always
stay unique for the page, where the page itself is just a placeholder for
any kind of information that might change over time?
Consider the following cases:
1. The first time someone creates page "Moon" it is assigned ID=1. If at
some point the page is renamed to "The_Moon", the ID=1 remains intact. Is
2. What if we have page "Moon" with ID=1. Someone creates a second-page
"The_Moon" with ID=2. Is it possible that page "Moon" is transformed into a
redirect? Then, "Moon" would be redirecting to page "The_Moon"?
3. Is it possible for page "Moon" to become a category "Category:Moon" with
the same ID=1?
I'd like to ask if Wikidata could please offer a HDT  dump along with the already available Turtle dump . HDT is a binary format to store RDF data, which is pretty useful because it can be queried from command line, it can be used as a Jena/Fuseki source, and it also uses orders-of-magnitude less space to store the same data. The problem is that it's very impractical to generate a HDT, because the current implementation requires a lot of RAM processing to convert a file. For Wikidata it will probably require a machine with 100-200GB of RAM. This is unfeasible for me because I don't have such a machine, but if you guys have one to share, I can help setup the rdf2hdt software required to convert Wikidata Turtle to HDT.
Hey everyone :)
We are working with researchers from the University of Erfurt on a
project called FactGrid. The goal is to build a wiki for researchers
to collect data related to their research. It will use Wikibase as the
underlying technology, just like Wikidata. We'll start with data
related to the Illuminati based on the Gothaer Illuminati Research
Database. You can find blog posts with more details and musings here:
https://blog.factgrid.de I started a page on Wikidata about it here:
My hope is that this will be one of the many Wikibase installations in
Wikidata's ecosystem in the future that is highly connected with
Wikidata and that Wikidata can partially import data from where wanted
There will be a kick-off workshop at Wikimedia Deutschland's office in
Berlin on the 1st and 2nd of December. It'd be great if we have a few
more people there who want to drive this project forward and can help
with their experience on Wikidata. If you'd like to attend please let
me know. Details about the workshop are here:
Lydia Pintscher - http://about.me/lydia.pintscher
Product Manager for Wikidata
Wikimedia Deutschland e.V.
Tempelhofer Ufer 23-24
Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V.
Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg
unter der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das
Finanzamt für Körperschaften I Berlin, Steuernummer 27/029/42207.
Hi folks !
So we at Schema.org like the idea of your new Panorama View property as
noted here and gaining interest...
We also thought a bit about that and are also thinking of an additional
property (a subtype for us) to hold a 360 panoramic view (a complete
spherical projection view, also known as photo bubbles, photo spheres, etc).
Any seasoned Wikidata folks that can create that 360 panoramic view
property proposal for us ? :)
Where can one find the mapping between Wikidata and Wikipedia. I can see the links online in both Wikidata and Wikipedia, but I cannot find the links in the RDF-dump f.ex. of Wikidata, nor in the XML-dump of Wikipedia.
For your information, the voting phase of the WMF Community Wishlist Survey
has started. You can find there several categories, more than 200
proposals. Some of them are connected to Wikidata (and not only in the
Wikidata categories, check also the others).
---------- Forwarded message ----------
From: Johan Jönsson <jjonsson(a)wikimedia.org>
Date: 28 November 2017 at 07:01
Subject: [Wikimedia-l] You can now vote in the Community Wishlist Survey
To: Wikimedia Mailing List <wikimedia-l(a)lists.wikimedia.org>, Wikimedia
The voting phase of the 2017 Community Wishlist Survey has now started.
Read the proposals and support the ones you want to support to make the
Click on the categories to find the proposals. The voting will close on
That's the important part of this email. Feel free to follow the link above
and starting voting right now.
The longer version:
The Community Wishlist Survey decides what the Wikimedia Foundation
Community Tech team will work on over the next year. The team is responsible
for addressing the top 10 wishes on the list, as well as some wishes from
smaller groups and projects that are doing important work, but don't have
the numbers to get their proposal into the top 10. The Wishlist is also
used by volunteer developers and other teams, who want to find projects to
work on that the community really wants.
Come help set the agenda.
If you want to see what the team has done in 2017, see the status report
from last month:
What you can do now:
*) Vote. This is the most important thing.
*) Spread the word. We really want people to find this, of course, and
we'll work on finding the best balance between spreading the news to
everyone and not being annoying, but please do help to spread the
information in your local community – Village Pump equivalents, IRC
channels, social media groups and so on.
*) Help translating the pages. We want the process to be as available as
possible for everyone. It's not every available if it's only in English.
*) If you want to get short updates through the notification system, you
can sign up for the Community Tech Newsletter:
Wikimedia-l mailing list, guidelines at: https://meta.wikimedia.org/
wiki/Mailing_lists/Guidelines and https://meta.wikimedia.org/
New messages to: Wikimedia-l(a)lists.wikimedia.org
Project Manager Community Communication for Wikidata
Wikimedia Deutschland e.V.
Tempelhofer Ufer 23-24
Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V.
Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg unter
der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das Finanzamt für
Körperschaften I Berlin, Steuernummer 27/029/42207.
I'd like to hear from you on a proposal to add some order and structure to
the various bibliographic corpora we currently have in Wikidata.
As you may know, coverage of creative works in Wikidata has seen
significant growth over the last year.  Different groups and projects
have started importing source metadata for various reasons:
- to provide sources machine-extracted statements (WikiFactMine ,
- to represent sources cited in Wikipedia (e.g. DOIs and PMIDs imported
via the mwcite identifier dumps) or other Wikimedia projects (Wikisource,
- to create collections of the open access literature citable and
reusable in Wikimedia projects (e.g. open access PMC review articles)
- to maintain small, curated corpora about specific topics (e.g. the
Zika corpus )
While all these efforts have grown organically and with little
coordination, it's hard to keep track of who initiated the, to clearly
communicate their purpose, to understand their completion criteria and
their data quality needs, and last but not least to offer any contribution
opportunities (in terms of code, or manual labor) to other community
members. It's unclear if the future of these efforts should continue to be
within Wikidata, or leverage the power of federated Wikibase-powered wikis
(see our discussion at the end of the WikiCite session at WikidataCon ).
Irrespective of the best long term solution, we need to provide some better
structure to these efforts today if we want to address the above problems.
I'd like to propose a fairly simple solution and hear your feedback on
whether it makes sense to implement it as is or with some modifications.
1. create a Wikidata class called "Wikidata item collection" [Q-X]
2. create and document individual collections (e.g. the Wikidata Zika
corpus [Q-Y]) as instances of this class: [Q-Y] --P31--> [Q-X]
3. add appropriate metadata to describe such collections (its main
topic(s), creators, any external identifiers, if applicable)
4. mark individual bibliographic items as part of [P361] the
Note that this approach can apply to bibliographic item collections but
also to any other set of items not directly identifiable via Wikidata
properties. Of course, the same items could obviously be part of multiple
collections. Some criteria would be needed to determine an appropriate
threshold for legitimate collections (we wouldn't want arbitrary
collections to be created for sets of items generated as part of a test
Beyond solving the issues listed above, this approach would also allow us
to generate dedicated statistics on the growth or data quality of each
collection via the SPARQL endpoint. It would also allow us to design
constraints for arbitrary item collections, something that right now is
not possible (unless these sets can already be identified via a query).
If something similar already exists in the context of structured data
donations/imports for GLAM, I'd be most grateful for any pointers.
I'm putting together a page on Wikidata that provides an overview of open
data, information on database rights and best practices for publishing open
data. I often meet people from organisations who produce data and want it
to be reused but have a lower level of data literacy and don't know where
Please take a look and see what is missing, feel free to braindump, I can
tidy things up :)
I forward here the message I initially posted on the Meta Tremendous
Wiktionary User Group talk page
because I'm interested to have a wider feedback of the community on this
point. Whether you think that my view is completely misguided or that I
might have a few relevant points, I'm extremely interested to know it,
so please be bold.
Before you consider digging further in this reading, keep in mind that I
stay convinced that Wikidata is a wonderful project and I wish it a
bright future full of even more amazing things than what it already
brung so far. My sole concern is really a license issue.
Bellow is a copy/paste of the above linked message:
Thank you Lydia Pintscher
taking the time to answer. Unfortunately this answer
miss too many important points to solve all concerns which have been raised.
Notably, there is still no beginning of hint in it about where the
decision of using CC0 exclusively for Wikidata came from. But as this
inquiry on the topic
advance, an answer is emerging from it. It seems that Wikidata choice
toward CC0 was heavily influenced by Denny Vrandečić, who – to make it
short – is now working in the Google Knowledge Graph team. Also it worth
noting that Google funded a quarter of the initial development work.
Another quarter came from the Gordon and Betty Moore Foundation,
established by Intel co-founder. And half the money came from Microsoft
co-founder Paul Allen's Institute for Artificial Intelligence (AI2)
To state it shortly in a conspirational fashion, Wikidata is the puppet
trojan horse of big tech hegemonic companies into the realm of
Wikimedia. For a less tragic, more argumentative version, please see the
research project (work in progress, only chapter 1 is in good enough
shape, and it's only available in French so far). Some proofs that this
claim is completely wrong are welcome, as it would be great that in fact
that was the community that was the driving force behind this single
license choice and that it is the best choice for its future, not the
future of giant tech companies. This would be a great contribution to
bring such a happy light on this subject, so we can all let this issue
alone and go back contributing in more interesting topics.
Now let's examine the thoughts proposed by Lydia.
Wikidata is here to give more people more access to more knowledge.
So far, it makes it matches Wikimedia movement stated goal.
This means we want our data to be used as widely as possible.
Sure, as long as it rhymes with equity. As in /Our strategic
direction: Service and //*Equity*/
Just like we want freedom for everybody as widely as possible. That
is, starting where it confirms each others freedom. Because under
this level, freedom of one is murder and slavery of others.
CC-0 is one step towards that.
That's a thesis, you can propose to defend it but no one have to
agree without some convincing proof.
Data is different from many other things we produce in Wikimedia in that
it is aggregated, combined, mashed-up, filtered, and so on much more
No it's not. From a data processing point of view, everything is
data. Whether it's stored in a wikisyntax, in a relational database
or engraved in stone only have a commodity side effect. Whether it's
a random stream of bit generated by a dumb chipset or some encoded
prose of Shakespeare make no difference. So from this point of view,
no, what Wikidata store is not different from what is produced
anywhere else in Wikimedia projects.
Sure, the way it's structured does extremely ease many things. But
this is not because it's data, when elsewhere there would be no
data. It's because it enforce data to be stored in a way that ease
aggregation, combination, mashing-up, filtering and so on.
Our data lives from being able to write queries over millions of
statements, putting it into a mobile app, visualizing parts of it on a
map and much more.
Sure. It also lives from being curated from millions
of benevolent contributors, or it would be just a useless pile of
This means, if we require attribution, in a huge number of cases
attribution would need to go back to potentially millions of editors and
sources (even if that data is not visible in the end result but only
helped to get the result).
No, it doesn't mean that.
First let's recall a few basics as it seems the whole answer makes
confusion between attribution and distribution of contributions
under the same license as the original. Attribution is crucial for
traceability and so for reliable and trusted knowledge that we are
targeting within the Wikimedia movement. The "same license" is the
sole legal guaranty of equity contributors have. That's it, trusted
knowledge and equity are requirements for the Wikimedia movement
goals. That means withdrawing this requirements is withdrawing this
Now, what would be the additional cost of storing sources in
Wikidata? Well, zero cost. Actually, it's already here as the
"reference" attribute is part of the Wikibase item structure. So
attribution is not a problem, you don't have to put it in front of
your derived work, just look at a Wikipedia article: until you go to
history, you have zero attribution visible, and it's ok. It's also
have probably zero or negligible computing cost, as it doesn't have
to be included in all computations, it just need to be retrievable
What would be the additional cost of storing licenses for each item
based on its source? Well, adding a license attribute might help,
but actually if your reference is a work item, I guess it might
comes with a "license" statement, so zero additional cost. Now for
letting user specify under which free licenses they publish their
work, that would just require an additional attribute, a ridiculous
weight when balanced with equity concerns it resolves.
Could that prevent some uses for some actors? Yes, that's actually
the point, preventing abuse of those who doesn't want to act
equitably. For all other actors a "distribute under same condition"
This is potentially computationally hard to do and and depending on
where the data is used very inconvenient (think of a map with hundreds
of data points in a mobile app).
OpenStreetMap which use ODbL, a copyleft attributive license, do
exactly that too, doesn't it? By the way, allowing a license by item
would enable to include OpenStreetMap data in WikiData, which is
currently impossible due to the CC0 single license policy of the
project. Too bad, it could be so useful to have this data accessible
for Wikimedia projects, but who cares?
This is a burden on our re-users that I do not want to impose on them.
Wait, which re-users? Surely one might expect that Wikidata would
care first of re-users which are in the phase with Wikimedia goal,
so surely needs of Wikimedia community in particular and Free/Libre
Culture in general should be considered. Do this re-users would be
penalized by a copyleft license? Surely no, or they wouldn't use it
extensively as they do. So who are this re-users for who it's
thought preferable, without consulting the community, to not annoy
with questions of equity and traceability?
It would make it significantly harder to re-use our data and be in
direct conflict with our goal of spreading knowledge.
No, technically it would be just as easy as punching a button on a
computer to do that rather than this. What is in direct conflict
with our clearly stated goals emerging from the 2017 community
consultation is going against equity and traceability. You propose
to discard both to satisfy exogenous demands which should have next
to no weight in decision impacting so deeply the future of our
Whether data can be protected in this way at all or not depends on the
jurisdiction we are talking about. See this Wikilegal on on database
rights <https://meta.wikimedia.org/wiki/Wikilegal/Database_Rights> for
It says basically that it's applicable in United States and Europe
on different legal bases and extents. And for the rest of the world,
it doesn't say it doesn't say nothing can apply, it states nothing.
So even if we would have decided to require attribution it would only be
enforceable in some jurisdictions.
What kind of logic is that? Maybe it might not be applicable in some
country, so let's withdraw the few rights we have.
Ambiguity, when it comes to legal matters, also unfortunately often
means that people refrain from what they want to to for fear of legal
repercussions. This is directly in conflict with our goal of spreading
Economic inequality, social inequity and legal imbalance might also
refrain people from doing what they want, as they fear practical
repercussions. CC0 strengthen this discrimination factors by
enforcing people to withdraw the few rights they have to weight
against the growing asymmetry that social structures are
concomitantly building. So CC0 as unique license choice is in direct
conflict with our goal of *equitably* spreading knowledge.
Also it seems like this statement suggest that releasing our
contributions only under CC0 is the sole solution to diminish legal
doubts. Actually any well written license would do an equal job
regarding this point, including many copyleft licenses out there. So
while associate a clear license to each data item might indeed
diminish legal uncertainty, it's not an argument at all for
enforcing CC0 as sole license available to contributors.
Moreover, just putting a license side by side with a work does not
ensure that the person who made the association was legally allowed
to do so. To have a better confidence in the legitimacy of a
statement that a work is covered by a certain license, there is once
again a traceability requirement. For example, Wikidata currently
include many items which were imported from misc. Wikipedia
versions, and claim that the derived work obtained – a set of items
and statements – is under CC0. That is a hugely doubtful statement
and it alarmingly looks like license laundering
<https://en.wikipedia.org/wiki/license_laundering>. This is true for
Wikipedia, but it's also true for any source on which a large scale
extraction and import are operated, whether through bots or crowd
So the Wikidata project is currently extremely misplaced to give
lessons on legal ambiguity, as it heavily plays with legal blur and
the hope that its shady practises won't fall under too much scrutiny.
Licenses that require attribution are often used as a way to try to make
it harder for big companies to profit from openly available resources.
No there are not. They are used as /a way to try to make it harder
for big companies to profit from openly available resources/ *in
inequitable manners*. That's completely different. Copyleft licenses
give the same rights to big companies and individuals in a manner
that lower socio-economic inequalities which disproportionally
advantage the former.
The thing is there seems to be no indication of this working.
Because it's not trying to enforce what you pretend, so of course
it's not working for this goal. But for the goal that copyleft
licenses aims at, there are clear evidences that yes it works.
Big companies have the legal and engineering resources to handle both
the legal minefield and the technical hurdles easily.
There is no pitfall in copyleft licenses. Using war material analogy
is disrespectful. That's true that copyleft licenses might come with
some constraints that non-copyleft free licenses don't have, but
that the price for fostering equity. And it's a low price, that even
individuals can manage, it might require a very little extra time on
legal considerations, but on the other hand using the free work is
an immensely vast gain that worth it. In Why you shouldn't use the
Lesser GPL for your next library
<https://www.gnu.org/licenses/why-not-lgpl.html> is stated
/proprietary software developers have the advantage of money; free
software developers need to make advantages for each other/. This
might be generalised as /big companies have the advantage of money;
free/libre culture contributors need to make advantages for each
other/. So at odd with what pretend this fallacious claims against
copyleft licenses, they are not a "minefield and the technical
hurdles" that only big companies can handle. All the more, let's
recall who financed the initial development of Wikidata: only actors
which are related to big companies.
Who it is really hurting is the smaller start-up, institution or hacker
who can not deal with it.
If this statement is about copyleft licenses, then this is just
plainly false. Smaller actors have more to gain in preserving mutual
benefit of the common ecosystem that a copyleft license fosters.
With Wikidata we are making structured data about the world available
And that's great. But that doesn't require CC0 as sole license to be
We are leveling the playing field to give those who currently don’t have
access to the knowledge graphs of the big companies a chance to build
And that's great. But that doesn't require CC0 as sole license.
Actually CC0 makes it a less sustainable project on this point, as
it allows unfair actors to take it all, add some interesting added
value that our community can not afford, reach/reinforce an
hegemonic position in the ecosystem with their own closed solution.
And, ta ta, Wikidata can be discontinued quietly, just like Google
did with the defunct Freebase which was CC-BY-SA before they bought
the company that was running it, and after they imported it under
CC0 in Wikidata as a new attempt to gather a larger community of
free curators. And when it will have performed license laundering of
all Wikimedia projects works with shady mass extract and import,
Wikimedia can disappear as well. Of course big companies benefits
more of this possibilities than actors with smaller financial
support and no hegemonic position.
Thereby we are helping more people get access to knowledge from more
places than just the few big ones.
No, with CC0 you are certainly helping big companies to reinforce
their position in which they can distribute information manipulated
as they wish, without consideration for traceability and equity
considerations. Allowing contributors to also use copyleft licenses
would be far more effective to /collect and use different forms of
free, trusted knowledge/ that /focus efforts on the knowledge and
communities that have been left out by structures of power and
privilege/, as stated in /Our strategic direction: Service and Equity/.
CC-0 is becoming more and more common.
Just like economic inequality
<https://en.wikipedia.org/wiki/economic_inequality>. But that is not
what we are aiming to foster in the Wikimedia movement.
Many organisations are releasing their data under CC-0 and are happy
with the experience. Among them are the European Union, Europeana, the
National Library of Sweden and the Metropolitan Museum of Modern Arts.
Good for them. But they are not the Wikimedia community, they have
their own goals and plan to be sustainable that does not necessarily
meet what our community can follow. Different contexts require
different means. States and their institutions can count on tax
revenue, and if taxpayers ends up in public domain works, that's
great and seems fair. States are rarely threatened by companies,
they have legal lever to pressure that kind of entity, although
conflict of interest and lobbying can of course mitigate this
Importing that kind of data with proper attribution and license is
fine, be it CC0 or any other free license. But that's not an
argument in favour of enforcing on benevolent a systematic withdraw
of all their rights as single option to contribute.
All this being said we do encourage all re-users of our data to give
attribution to Wikidata because we believe it is in the interest of all
That's it, zero legal hope of equity.
And our experience shows that many of our re-users do give credit to
Wikidata even if they are not forced to.
Experience also show that some prominent actors like Google won't
credit the Wikimedia community anymore when generating directly
answer based on, inter alia, information coming from Wikidata, which
is itself performing license laundering of Wikipedia data.
Are there no downsides to this? No, of course not. Some people chose not
to participate, some data can't be imported and some re-users do not
attribute us. But the benefits I have seen over the years for Wikidata
and the larger open knowledge ecosystem far outweigh them.
This should at least backed with some solid statistics that it had a
positive impact in term of audience and contribution in Wikimedia
project as a whole. Maybe the introduction of Wikidata did have a
positive effect on the evolution of total number of contributors, or
maybe so far it has no significant correlative effect, or maybe it
is correlative with a decrease of the total number of active
contributors. Some plots would be interesting here. Mere personal
feelings of benefits and hindrances means nothing here, mine
included of course.
Plus, there is not even the beginning of an attempt to A/B test with
a second Wikibase instant that allow users to select which licenses
its contributions are released under, so there is no possible way to
state anything backed on relevant comparison. The fact that they are
some people satisfied with the current state of things doesn't mean
they would not be even more satisfied with a more equitable solution
that allows contributors to chose a free license set for their
publications. All the more this is all about the sustainability and
fostering of our community and reaching its goals, not immediate
feeling of satisfaction for some people.
 Wikipedia Signpost 2015, 2nd december
 according to the next statement of Lydia
Once again, I recall this is not a manifesto against Wikidata. The
motivation behind this message is a hope that one day one might
participate in Wikidata with the same respect for equity and
traceability that is granted in other Wikimedia projects.
Kun multe da vikiamo,