Wikidata. What is it... (long)

• 3900 active users
• 85 flagged bots
• 100~ administrators (sysops)
• 4 bureaucrats
• 2 oversighters
• 37+ task forces
• database is 106.6GB (as of 08/01/13)

• Wikidata:RFC (Request For Comment)
• Wikidata:RFP (Request For Permissions)
• Wikidata:RFD (Request For Deletion)
• Wikidata:AN (Administrators' Noticeboard)
• Wikidata:BN (Bureaucrats' Noticeboard)
• Category:Wikidata protected edit requests
• Wikidata:Bot requests
• Wikidata:Property proposal
• Wikidata:Properties for deletion

2013 analysis: http://simia.net/languagelinks/2013.html

2012 analysis: http://simia.net/languagelinks/index.html

The Basics

Some History

Terms

Useful Places

Entities, Items, Properties and Queries

• Namespaces - Items (main space), properties (Property:) , queries (Query:)

• Entity - Every entity is identified by a unique entity Id
• It is also identified by a unique combination of label and description per language

• Item - A page that represents a real-life topic, concept, or subject

• Property - The descriptor for a data value using a data type

• Query - (future feature) a predefined search across items

Possible data types: Item, Commons media, String, Time, Globe Coordinate, URL

Language Attributes

• Language Attributes - Language specific labels, descriptions and aliases that are assigned to entities

• Label - Primary means to distinguish entries

• Description - Provides context for the label

• Aliases - Alternate names that can be used for lookup the same way as labels

• Language Fallback - Methods to systematically replace missing language attributes with strings from alternate languages

Claims and Statements

Gadgets and tools

• Claim - a piece of data about the entity on whose page the claim appears
• A claim consists of a property (such as "Location") and a value (e.g., "Germany")
• A claim can have qualifiers, such as a qualifier saying that the claim is valid within a specific time frame

• Statement - a piece of data about an item, recorded on the item's page
• A statement consists of a property (such as "Location") and a value (e.g. "Germany")
• A statement can have qualifiers, (e.g. the claim is valid within a specific time frame)
• A statement can have references (e.g. giving the source for the claim)
• A statement can have a rank (used to distinguish between several claims containing the same property)

https://www.wikidata.org/wiki/Wikidata:Tools

Claims and Statements cont.

Move

Main Language First

SlurpInterwiki

• Value - (or datavalues) the information pieces embedded in each claim
• NoValue - a marker when there is no known value
• UnknownValue - a marker when there is some value but the exact value is not known

• Qualifier - part of the claim that says something about the specific claim, often in a descriptive way

• Rank - a quality factor used for simple selection/filtering in cases where there are many statements for a given property

• Reference - describes the origin of a statement in Wikidata

Learn about the basics of Wikidata:

Wikidata:Introduction

Find answer to frequently asked questions:

Wikidata:FAQ

Chat with other community members:

Wikidata:Project chat

Read the latest news around Wikidata:

Wikidata:News

Get a weekly summary of what is happening:

Wikidata:Status updates

Find out about gadgets and tools:

Wikidata:Tools

Wikidata and Wikibase

Sitelinks

• Sitelink - an identification of a linked page or article on another Wikimedia site such as a Wikipedia language version
• Consists of a site identifier (e.g. "dewiki") and a title (e.g. "Berlin")

• Badge - a marker attached to a sitelink, which could , for example,identify that the article is a "featured article" on a specific site

Wikidata deployment phases

What does this mean?

• This script imports automatically all interwiki-links from one Wikipedia article

• The gadget then can be launched by clicking on the "Import interwiki" link in the toolbox. After that a dialog appears where a language for import can be selected.

• This script highlights the language used at the moment, and shows it on the top. It is also possible to do this for a list of languages.

• Adds a move link to the edit tools when editing a sitelink.

• It looks like [­save|remove|move|cancel]

• Collaborative - The data is maintained by Wikidata editors (volunteers)

• Multilingual - Editing, consuming, browsing and reusing the data is fully multilingual

1 'interwiki' support

- Items, Sitelinks

2 'infobox' support

- Properties, Claims, Statements

3 'list' support

- Queries

time to have a play!

• Structured - Data is stored in a structured form allowing easy access and reuse

https://www.wikidata.org

• Free - The data in Wikidata is published under a free license

LabelLister

CommonsMedia

Deletion Request

• Head to the test site http://test.wikidata.org/
• Create some items http://test.wikidata.org/wiki/Special:NewItem
• Create some properties http://test.wikidata.org/wiki/Special:NewProperty
• Play with language attributes
• Play with claims and statements

test.wikidata properties:

CommonsName (P6), instance of (P7), Coordinate (P10), Date of birth (P18), URL (P20)

also see the wikidata sandbox! https://www.wikidata.org/wiki/Q4115189

Wikidata is a free, collaborative, multilingual, structured knowledge base that can be read and edited by humans and machines alike.

The Team

Wikidata vs Wikibase

October 26, 2012: The Wikidata database is created but is not available for editing yet.

October 29, 2012: Item Q1 ("Universe") is created.

October 30, 2012: Wikidata is launched.

November 3, 2012: Item ID Q10000 is created, four days after opening the wiki.

November 8, 2012: The first set of local temporary administrators are elected.

November 10, 2012: Item ID Q20000 is created.

November 14, 2012: Victory becomes item ID Q50000, fifteen days after Wikidata's launch.

November 24, 2012: Item ID Q100000 is created.

November 29, 2012: Human and bot collaboration helps Wikidata reach item ID Q200000

December 1, 2012: Item ID Q250000 is created.

December 7, 2012: Item ID Q500000 create, within 55 hours of Q400000's creation.

December 15, 2012: Finnish television series Matkaoppaat is added as item ID one million.

December 29, 2012: Item ID two million, is created within sixty days of Wikidata's launch.

January 14, 2013: Wikidata phase 1 goes live on the Hungarian Wikipedia

January 30, 2013: Wikidata phase 1 goes live on the Hebrew and Italian Wikipedias

February 2, 2013: Item 4,000,000 is created, just over three months after launch.

February 4, 2013: Phase 2 of Wikidata commences

February 13, 2013: Wikidata phase 1 goes live on the English Wikipedia

February 20, 2013: The five-millionth item

March 6, 2013: Phase 1 of Wikidata goes live on the remaining 282 editions of Wikipedia

March 27, 2013: Phase 2 of Wikidata is deployed on 11 editions of Wikipedia

April 4, 2013: The ten-millionth item is created

April 12, 2013: The first 2 Wikidata bureaucrats are elected.

April 24, 2013: Phase 2 of Wikidata is deployed across all editions of Wikipedia

May 8, 2013: The thirteen-millionth item is created

May 29, 2013: The long-awaited time datatype is now available

June 9, 2013: Wikidata is edited for the 50,000,000th time

June 10, 2013: The coordinates datatype is now available

July 17, 2013: The fourteen-millionth item

July 23, 2013: Phase 1 of Wikidata has gone live on Wikivoyage

August 26, 2013: Phase 2 of Wikidata has gone live on Wikivoyage

September 10, 2013: URL datatype is now available

September 16, 2013: The first 2 Wikidata oversighters are elected

September 23, 2013: Phase 1 of Commons has launched

• This script adds a small link to the top of the page of each item with a link for quickly requesting a deletion at Wikidata:Requests for deletion.

• This script shows a list of all labels in all languages that are supported in the specific item.

• And edit label without having to change your main language.

• Allows to view a Wikimedia Commons image from Wikidata.

• Wikidata - A Wikimedia project that runs an instance of MediaWiki with the Wikibase extensions

• Wikibase - The software behind Wikidata. It consists of three MediaWiki extensions:

• Wikibase repo - enables Mediawiki to deal with the collection and maintenance of the structured data

• Wikibase client - enables Mediawiki installations such as Wikipedia to query and display information from a repo

• Wikibase lib - common libraries for the above extensions

EnumItems

AuthorityControl

Preview

How is this all used?

What Wikibase gives us

• This script adds one or two tabs next to the watchlist star tabs, to jump to the previous or the next item, respectively

• For items with 'Authority Control' properties, set the corresponding codes as links to the online Authority Control tool.

• Moreover, if the user clicks 'edit', the link disappears instantly.

Community Overview

Wikidata Map

• Shows a "preview" button next to each linked article to get a preview of the article.

http://dl.dropboxusercontent.com/u/172199972/map/map.html

• Rest API for reading and writing
• Full dumps of all data stored
• Data access in many formats, JSON, XML, RDF
• Creative Commons 0 licence
• Stable Identifiers

Merge

more...

autoEdit

http://goo.gl/oCQsmB

• Sitenames in user-language
• Makes language names in sitelinks appear in your language.
• importScript( 'User:Ricordisamoa/SitenamesInUserLanguage.js' );

• DMY dates
• Makes all dates in claims appear as "dd month-name-in-your-language yyyy"
• importScript( 'User:Ricordisamoa/DMYdates.js' );

• Consistency check
• A tool to check consistencies of statements, that is, if B is "child" of A, then A should be "father" or "mother" of B.
• importScript( 'User:Xmlizer/consistency_check.js' );

• Wikidata useful
• Adds a box of quick "add statement" links to the right side of the page. Entity and phylogeny types, countries (location and citizenship). More to come.
• importScript( 'User:Magnus Manske/wikidata_useful.js' );

Geneawiki

The Wiki Atlas

https://toolserver.org/~magnus/ts2/geneawiki/

http://4thmain.github.io/projects/hacks/wiki-atlas.html

• Adds a "Merge it with ..." button in a submenu next to the "Watch" button that, when clicked, allows to merge items and automatically delete the extra items after merge or request the deletion of them.

• This script adds automatically all labels with the help of the interwiki links and adds descriptions from an editable list.

see https://www.wikidata.org/wiki/Wikidata:Tools

The Wikibase Extensions and Modules

Wikidata is 1 this weekend!

The Talk Page

http://toolserver.org/~magnus/thetalkpage/

Policies & Guidelines

https://www.wikidata.org/wiki/Wikidata:List_of_policies_and_guidelines

• mediawiki/extensions/Wikibase
• mediawiki/extensions/WikibaseDataModel
• mediawiki/extensions/WikibaseDatabase
• mediawiki/extensions/WikibaseQuery
• mediawiki/extensions/WikibaseQueryEngine
• mediawiki/extensions/Wikidata
• mediawiki/extensions/DataTypes
• mediawiki/extensions/DataValues
• mediawiki/extensions/Diff

The Guidelines

• Wikidata:Blocking policy
• Wikidata:Notability
• Wikidata:Use common sense
• Wikidata:Page protection policy
• Help:Description
• Wikidata:IP block exemption
• Wikidata:Oversight
• Help:Sources

Notability!

Special Pages

The Policies

Getting used to Wikidata

• Wikidata:Administrators
• Wikidata:Bureaucrats

Special:DispatchStats

Wikidata in its first phases has two main goals: to centralize interlanguage links across Wikimedia projects and to serve as a general knowledge base for the world at large.

An item is acceptable if and only if it fulfils at least one of these two goals, that is if it meets at least one of the criteria below:

• It contains at least one valid sitelink to a Wikipedia, Wikivoyage, or Wikimedia Commons page.
• To be valid, a link must not be a talk page, MediaWiki page, special page, user page, subtemplate, or file. Note that a single Wikimedia page cannot have more than one sitelink in Wikidata and that a sitelink cannot point to a redirect.

• It refers to an instance of a clearly identifiable conceptual or material entity. The entity must be notable, in the sense that it can be described using serious and publicly available references. If there is no item about you yet, you are probably not notable.

• It fulfills some structural need, for example: it is needed to make statements made in other items more useful.

https://www.mediawiki.org/wiki/Extension:Wikibase_Repo

The Proposed

• Wikidata:Bots
• Help:Label
• Help:Aliases
• Help:Statements
• Help:Sitelinks
• Help:Merge
• Wikidata:Verifiability
• Wikidata:Deletion policy
• Wikidata:No personal attacks
• Wikidata:Assume good faith

Goto:

https://en.wikipedia.org/wiki/Special:UnconnectedPages

Find A Page!

Make an Item For It!

Processes

Special:MyLanguageFallbackChain

This page provides statistics about dispatching changes to the clients.

A client wiki is notified of a change on Wikidata once the change has been dispatched on that wiki, and the job queue on that wiki has processed that notification.

To come!

Special:NewProperty

Special:NewItem

The language fallback chain used to display entity labels for you is shown below.

DataTypes

Property Proposal

Request For Deletion

• Before a new property is created, it has to be discussed.
• If after some time there are some supporters, but no or very few opponents, the property is created by a property creator or an administrator.

• Numbers / Quantities
• Geographic Shapes
• Media
• Multilingual texts
• Monolingual texts

Api modules

Features

Creates a new property

Creates a new item

removeclaims

setclaimvalue

Serialized entity form

• Before deleting items, check to ensure that they are not in use. This can be easily done with the "links" link below the header of each request.

• Please merge items before requesting their deletion. Regular users and IPs are able to merge items. If you do not know how to merge, please read Help:Merge.

• Do not try to pre-emptively delete an item because its page is up for deletion on a site. The link will be removed by bots and reported here in the future if a deletion takes place.

• Please use Wikidata:Properties for deletion if you want to nominate a property for deletion.

Item by title

action=wbremoveclaims *

API module for removing Wikibase claims.

• summary
• token
• baserevid
• bot
• claim

"Q8": {

"pageid": 13,

"ns": 120,

"title": "Item:Q8",

"lastrevid": 54,

"modified": "2013-09-28T07:28:56Z",

"id": "Q8",

"type": "item"

}

action=wbsetclaimvalue *

API module for setting the value of a Wikibase claim.

• summary
• token
• baserevid
• bot
• claim
• value
• snaktype

"Q2": {

"id": "Q2",

"type": "item",

"aliases": {

"en": [

{

"language": "en",

"value": "alias1"

},

{

"language": "en",

"value": "alias2"

}

]

},

"labels": {

"en": {

"language": "en",

"value": "I am a label"

}

},

"descriptions": {

"en": {

"language": "en",

"value": "I am a description!"

}

},

"claims": {

"P5": [

{

"id": "Q2$0457f6a4-45b3-46db-cecf-1933df515bb7",

"mainsnak": {

"snaktype": "value",

"property": "P5",

"datavalue": {

"value": {

"time": "+00000002013-06-12T00:00:00Z",

"timezone": 0,

"before": 0,

"after": 0,

"precision": 11,

"calendarmodel": "http://www.wikidata.org/entity/Q1985727"

},

"type": "time"

}

},

"type": "statement",

"rank": "normal"

}

]

},

"sitelinks": {

"enwiki": {

"site": "enwiki",

"title": "User:Addshore"

}

}

}

• Sorting of Statements
• Fallback Languages
• Ajax free editing
• Redirects
• Accessing data from an arbitrary items

Special:Set*

setreference

setclaim

getentities

Wikibase Client

action=wbgetentities *

API module to get the data for multiple Wikibase entities.

• ids
• sites
• titles
• props
• sort
• dir
• languages
• languagefallback
• normalize

action=wbsetclaim *

API module for creating or updating an entire Claim.

• claim
• token
• baserevid
• bot

Sister Projects

action=wbsetreference *

API module for creating a reference or setting the value of an existing one.

• summary
• token
• baserevid
• bot
• statement
• snaks
• snaks-order
• reference

Interwiki Links

Using Information From Repo

240,000,000 language links removed

removereferences

• Support meta info for commons
• Wikiquote
• Wiktionary
• Wikispecies
• etc.

createclaim

setlabel

This form allows you to set the label of an entity.

Such pages exist for descriptions, aliases and sitelinks

The inclusion syntax presented here is meant to work for very simple cases, and only for them.

Complicated cases are to be realized using Lua.

www.mediawiki.org/wiki/Extension:WikibaseClient/Lua

Item Disambiguation

action=wbsetreference *

API module for removing one or more references of the same statement.

• summary
• token
• baserevid
• bot
• statement
• references

action=wbsetlabel *

API module to set a label for a single Wikibase entity.

• id
• site
• title
• baserevid
• summary
• token
• bot
• language
• value

action=wbcreateclaim *

API module for creating Wikibase claims.

• summary
• token
• baserevid
• bot
• entity
• snaktype
• property
• value

Properties

{{#property:P36}}

{{#property:capital}}

Properties from other items (not yet implemented)

getclaims

setqualifier

setdescription

Special:(Entities|Items)Without*

{{#property:capital|of=Q183}}

{{#property:capital|of=Germany}}

action=wbgetclaims *

API module for getting Wikibase claims.

• entity
• property
• claim
• rank
• props

action=wbsetdescription *

API module to set a description for a single Wikibase entity.

• id
• site
• title
• baserevid
• summary
• token
• bot
• language
• value

action=wbsetqualifier *

API module for creating a qualifier or setting the value of an existing one.

• summary
• token
• baserevid
• bot
• claim
• property
• value
• snaktype
• snakhash

LUA

removequalifiers

editentity

setaliases

mw.wikibase.getEntity()

gets entity data of the Wikidata item connected with the current page.

mw.wikibase.label( id )

takes an item ID and returns the label in the language of the local wiki.

mw.wikibase.sitelink( id )

takes an item ID and returns the title of the corresponding page on the local wiki.

action=wbremovequalifiers *

API module for removing a qualifier from a claim.

• summary
• token
• baserevid
• bot
• claim
• qualifiers

action=wbsetaliases *

API module to set the aliases for a Wikibase entity.

• id
• site
• title
• baserevid
• summary
• token
• bot
• add
• set
• remove
• language

action=wbeditentity *

API module to create a single new Wikibase entity and modify it with serialised information.

• id
• site
• title
• baserevid
• summary
• token
• bot
• data
• clear
• new

setstatementrank

linktitles

setsitelink

https://www.mediawiki.org/wiki/Extension:WikibaseClient/Lua

action=wblinktitles *

API module to associate two articles on two different wikis with a Wikibase item.

• tosite
• totitle
• fromsite
• fromtitle
• token
• bot

action=wbsetstatementrank *

API module for setting the rank of a Wikibase statement.

• summary
• token
• baserevid
• bot
• statement
• rank

action=wbsetsitelink *

API module to associate an article on a wiki with a Wikibase item or remove an already made such association.

• id
• site
• title
• baserevid
• summary
• token
• bot
• linksite
• linktitle