Hi all,

As promised a while ago, we have reworked our "Wikidata Classes and
Properties" browser. I am happy to introduce the first beta version of a
new app, called SQID:

http://tools.wmflabs.org/sqid/

It is a complete rewrite of the earlier application. Much faster, more
usable, much more up-to-date information, supported on all reasonable
browsers, and with tons of new features. Try it yourself, or read on for
the main functions and current dev plans:


== Browse classes and properties ==

You can use it to find properties and class items by all kinds of
filtering settings:

http://tools.wmflabs.org/sqid/#/browse?type=properties
http://tools.wmflabs.org/sqid/#/browse?type=classes

New features:
* Sort results by a criterion of choice
* Powerful, easy-to-use filtering interface
* Search properties by label, datatype, qualifiers used, or co-occurring
properties
* Search classes by label, (indirect) superclass or by properties used
on instances of the class
* All property statistics and some class statistics are updated every hour

== View Wikidata entities ==

The goal was to have a page for every property and every class, but we
ended up having a generic data browser that can show all (live) data +
some additional data for classes and properties (this is our main goal,
but the other data is often helpful to understand the context). The UI
is modelled after Reasonator as the quasi-standard of how Wikidata
should look, but if you look beyond the surface you can see many
differences in what SQID will (or will not) display.

Examples:
* Dresden, a plain item with a lot of data:
   http://tools.wmflabs.org/sqid/#/view?id=Q1731
* Volcano, a class with many subclasses:
   http://tools.wmflabs.org/sqid/#/view?id=Q8072
* sex or gender, a frequently used property:
   http://tools.wmflabs.org/sqid/#/view?id=P21

Notable features:
* Fast display
* All statement data with all qualifiers shown
* Extra statistical and live query data embedded

== General Wikidata statistics ==

As a minor feature, we also publish statistics on the weekly full
Wikidata dump (which we process to get some of the statistics):

http://tools.wmflabs.org/sqid/#/status

Don't trust the main page -- find out how many entities there really are ;-)


== Plans, todos, feedback, contributions ==

We are on github, so please make feature requests and bug reports there:

https://github.com/Wikidata/WikidataClassBrowser/issues

Pull requests are welcome too.

Known limitations of the current version:

* Data update still a bit shaky. We refresh most statistical data every
hour (entity data is live anyway), but you may not see this unless you
clear your browser cache. This will be easier in the future.
* Entity data browser does not show sitelinks and references yet.
* Incoming properties not shown yet on entity pages
* I18N not complete yet (if you would like to try the current dev
status, see, e.g.: http://tools.wmflabs.org/sqid/#/view?id=Q318&lang=de)

Moreover, we are also planning to integrate more data displays, better
live statistics, and editing capabilities. Developers who want to help
there are welcome. SQID can also be a platform for other data display
ideas (it's built using AngularJS, so integration is easy).

== And what about Miga? ==

The old Miga-based app at
http://tools.wmflabs.org/wikidata-exports/miga/ will be retired in due
course. Please update your links.

== Credits ==

I have had important development support from Markus Damm, Michael
Günther and Georg Wild. We are funded by the German Research Foundation
DFG. All of us are at TU Dresden. Complex statistics are computed with
Wikidata Toolkit. Live query results come from the Wikidata SPARQL Query
Service.

Enjoy,

Markus

--
Markus Kroetzsch
Faculty of Computer Science
Technische Universität Dresden
+49 351 463 38486
http://korrekt.org/

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