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Mar 6, 2024 · Wikidata:SPARQL query service/Documentation - a hub for documents about the WDQS, organized under the Diátaxis framework; SPARQL 1.1 W3C Recommendation; Blazegraph wiki - Blazegraph is the query engine used by the Wikidata SPARQL query service. The wiki provides useful insights.
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Präsentation "SPARQL and Wikidata intro" von shonagon -...
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SPARQL (pronunciato come sparkle in inglese, parola che...
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SPARQL (pronounced "sparkle") is an RDF query language, that...
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SPARQL (udtales "sparkle") er et RDF-forespørgselssprog, det...
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SPARQL (uttalas som engelskans "sparkle") är ett...
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SPARQL (pronounced "sparkle") is an RDF query language, that...
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SPARQL (wym. „sparkel”) jest językiem zapytań RDF, czyli...
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Wikidata:SPARQL query service/Documentation - a hub for...
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Mar 8, 2024 · 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 . Before writing your own SPARQL query, look at {{ Item documentation }} or any other generic SPARQL query template and see if your query is already included.
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What is the Wikidata Query Service?
What is Wikidata & how do I use it?
What is Wikidata SPARQL query service?
What query language does Wikidata use?
Mar 24, 2024 · The Wikidata Query Service provides a SPARQL endpoint including a powerful Web-GUI. SPARQL (pronounced "sparkle") is an RDF query language, that is, a semantic query language for databases. With SPARQL, you can extract any kind of data, with a query composed of logical combinations of triples. First steps.
- 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 · 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. The query service can be accessed by navigating to query.wikidata.org If we go there, we’ll see the following screen: Figure 2.
Sep 7, 2023 · Local query service. It's no small task to procure a Wikidata dump and implement the above tools for working with it, but you can take a further step. If you have the capacity and resources to do so, you can host your own instance of the Wikidata Query Service and query it as much as you like, out of contention with any others.
Mar 3, 2024 · Wikidata Query Service is the Wikimedia implementation of SPARQL server, based on the Blazegraph engine, to service queries for Wikidata and other data sets. Please see more detailed description in the User Manual . More information on technical interactions with Query Services is available. Project. Query GUI.
