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Which query language is used in Wikidata Query Service?
What is Wikidata & how do I use it?
What is Wikidata Query Service?
Is Wikidata open source?
Mar 8, 2024 · Other languages: polski. русский. українська. עברית. 中文. WDQS, the Wikidata Query Service, is a powerful tool to provide insight into Wikidata's content. This guide will teach you how to use it. See also the interactive tutorial by Wikimedia Israel .
- A Gentle Introduction to The Wikidata Query Service
- Breaking Down The Query
- Text to SPARQL Walkthrough
- Diving Into The User Interface
Have you ever wondered about questions like these? 1. What are the largest cities in the world that have a female mayor? 2. What airports are located within 100km of Berlin? 3. Who were all known descendants of Genghis Khan? Wikidata has the answers.
Now let’s analyse the code to generalise this so we can search for any single object (for example, dogs, planets, countries, songs): 1. SELECT A query SELECTs something. What exactly you want to select and display is described later, but for the time being you just state the placeholders (or variables). Here they are called ?item and ?itemLabel. Yo...
The animations below show how to write triplets in natural language, and convert them into SPARQL queries. The key is to prefix variables with ?, items with wd: and properties with wdt:,and then using the Ctrl+Space (or Ctrl+Alt+Space or Alt+Enter) keyboard shortcut to activate the auto-completion feature that replaces the latter two with the actua...
How to change the language that the results are displayed in?
With this search query tool, you can not only customise and search for simple or aggregated, compound, nested and complex queries but you can also search in ANY language and get results in ANY language too. 1. Change the default language code from “en” (English) to any other language code, say “ja” for Japanese.
How to change the sorting order of the results displayed?
The order of the items displayed can be easily changed in the interface. Just click on the relevant columns of the search results to customise the sorting order:
How to change the language of the UI?
Click the word English and select the language from the list displayed: Notice the UI has changed to the selected language:
Jan 29, 2020 · Figure 1. Wikidata. So what is Wikidata? Wikidata is a collaboratively edited knowledge base. It is a source of open data that you may want to use in your projects. Wikidata offers a query service for integrations. — Jesús Barrasa. QuickGraph#10 Enrich your Neo4j Knowledge Graph by querying Wikidata.
Jun 17, 2020 · To perform such queries, a specific type of query language is used, known as SPARQL in conjunction with the Wikidata Query Service. The tools we need : WQS and SPARQL. SPARQL is a query...
Oct 19, 2020 · Wikidata is a free and open knowledge base that allows humans and machines to access linked data. To support the international Wikidata community, Wikimedia Israel has developed a tutorial for the Query Service. With the tutorial, the chapter aims to empower new users to query Wikidata, which currently holds almost 90 million items.
Jan 31, 2024 · Wikidata is a free, collaborative, multilingual, secondary knowledge base, collecting structured data to provide support for Wikipedia, Wikimedia Commons, the other wikis of the Wikimedia movement, and to anyone in the world.
Feb 26, 2024 · DBpedia is a crowd-sourced community effort to extract structured information from Wikipedia and make this information available on the Web. DBpedia provides the ability for sophisticated queries against Wikipedia, and to link the different data sets on the Web to Wikipedia data. Linked Open Data Cloud Wikidata Page.
