?birth_place_node wikibase:geoLongitude ?birth_place_lon. This tutorial is building up the knowledge to collect the data responsible for this In this diagram, you can see the structure of a Wikidata item. to view non-HTML content in a web browser), you can also access data about an entity in a specific format by extending the data URL with an extension suffix to indicate the content format that you want, such as By default, The RDF returned from Linked Data interface is self-contained, and includes descriptions of other entities it refers to.
SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } ?birth_place p:P625/psv:P625 ?birth_place_node. Each item has a list of Also, all the code for this article and the interactive visualization can be found in this Interesting sidenote: When running the query you will notice Let’s now explore other properties of the countries we have selected.
OPTIONAL { ?capital wdt:P1082 ?population. }
Example for USA: life+70 years SERVICE wikibase:label { bd:serviceParam wikibase:language "fr,en" . Embed Embed this gist in your website. The The slash in Taking this data set we can explore the age of the mayors and the population of the capital they are serving.Next, let’s take a look at how far mayors are born from the capital.
(this is an example more could be shown where the query outputs less info than contained in Wikidata). Our goal is now to get for all countries, the capital, the population, the mayor, his birthday and finally his birthplace. your coworkers to find and share information.
?countryLabel ?population ?area ?medianIncome ?age When you request a Special:EntityData URL, the special page applies For cases in which it is inconvenient to use content negotiation (e.g.
Example: if the label does not exist in French, the service will take the English label ?item rdfs:label ?itemLabel . We can access the Wikidata SPARQL endpoint also with Python, which enables us to directly load and analyze the data we have queried.
In the example above, I already looked them up: The relation “Being a member of” has the identifier wdt:P463 and the item “European Union” is identified by wd:Q458.
For this, we will use the Here we can see that most mayors tend to be born in or close to the city where they later serve (note, that the chart is in log-scale). Sign in Sign up Instantly share code, notes, and snippets. This shows how to retrieve and present relevant information from Wikidata by associating it with entities in your application. If you take a look at After trying this query you will notice that the list of countries became shorter. BIND(year(now()) - year(?birth_date) AS ?age) ?countryLabel ?capitalLabel ?population ?capital_lon ?capital_lat Example for USA: life+70 years SERVICE wikibase:label { bd:serviceParam wikibase:language "fr,en" . } ?country wdt:P463 wd:Q458.
By using our site, you acknowledge that you have read and understand our Many of the examples also work in template:Wikidata list template calls parsed by the Listerbot, which however requires the ?item field variable to be selected.
The recent changes API can be used to see which entities were changed and those can then be fetched via the Wikidata offers you the data in Wikidata for free with no requirement to attribute under You may use the Wikidata logo (see above), but should not do so in any way that implies endorsement by Wikidata, or the Wikimedia Foundation. ?gender rdfs:label ?genderLabel . If you are aware of more useful resources or if you generally have some feedback feel free to contact me or add a push request to the notebook of this article. SELECT You can access data per item, or the entirety of the data as dumps. } First, we start by getting the capital of the country which we simply get via the This graph of the data representation that you see here shows the ways you can traverse it to get to various pieces of information with SPARQL starting from an item (in the graph shown as In the final part, we collect the birthplace, the birth date and the age of the mayor. FILTER NOT EXISTS { ?statement pq:P582 ?end_date } bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
# Get latitude longitude coordinates of capital #Service to retrieve the labels of items, in order of language. Wikidata offers a wide range of general data about our universe as well as links to other databases. Embed. Freelance Data Scientist // MSc Applied Image and Signal Processing // Data Science / Data Visualization / GIS / Geometric ModellingIn this article, we will be going through building queries for Wikidata with Python and SPARQL by taking a look where mayors in Europe are born.
We can add the We continue our journey with a complicated query which we will unpack step by step. This opens up exciting new possibilities to do data science and exploratory data analysis and a fascinating new way to learn about relationships and curious findings in our accumulated human knowledge.A good read covering the history and an overview of Wikidata can be found in the article Here is an unstructured list of resources that contain useful documentation, tutorials or examples that use Wikidata. Example how to visualize an RDF database.
?mayor wdt:P19 ?birth_place. But how would you get them? We can see that Athens leads the exceptions with their current mayor (Giorgos Kaminis) born in New York, USA and Paris with their current mayor (Anne Hidalgo) born in San Fernando, Spain. Where developers & technologists share private knowledge with coworkersProgramming & related technical career opportunitiesThis question is not programming related, it is about the Wikidata API. Packages ; Package Description; … To describe these relations, we can use a triple: A triple is a statement containing a subject predicate and object.. The data is published under the Changes to APIs and data formats used to access Wikidata are subject to the There are several ways to access and edit the data from Wikidata.
What I recommend is to inspect the Wikidata site of a result item. SELECT DISTINCT
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