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16 de may. de 2024 · What is SPARQL. SPARQL (pronounced "sparkle") is an RDF query language, that is, a semantic query language for databases. Wikidata provides an SPARQL endpoint including a powerful Web-GUI since September 2015. With SPARQL you can extract any kind of data, with a query composed of logical combinations of triples.
- Sparql Query Service/Query Optimization
But Wikidata's normal search function have all words in...
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Wikidata: SPARQL query service/apache-jena. From Wikidata <...
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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 Query Service/Query Optimization
8 de mar. de 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.
- 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:
3 de mar. de 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.
Un tutorial de 5 minutos sobre el Wikidata Query Service (Servicio de Consultas en Wikidata) Wikidata Query Service (WDQS) es un paquete de software y servicio público diseñado para proporcionar un endpoint en lenguaje SPARQL que te permite consultar los datos de Wikidata.
11 de ene. de 2024 · Wikidata Query Service is the Wikimedia implementation of SPARQL server, based on Blazegraph engine, to service queries for Wikidata and other data sets. Wikidata Query Service Streaming Updater - Producer
19 de oct. de 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.
