Questions tagged [wikidata]

Wikidata is a project of the Wikimedia foundation related to open data

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24 views

Is it possible to query Wikidata to get a list of things by item index?

Say, for example, that I wanted to know what the first 100 items are on WikiData (which I do,) without searching in WikiData Q1, Q2, Q3 and so on. Is there a way to write a SPARQL query to find all ...
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29 views

Dataset for plant identification

I'm looking for a plant identification dataset (to train a plant identification system) that is free or not too expensive to use and has plant images, specifically garden plants. Just wondering if ...
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DOID , SYMP Ontology Sparql Queries

I need to extract the list of diseases, categories, bodyparts and symptoms. I've found several ontologies for that datasets. Disease ontology, symptom ontology, Bioportal and Wikipedia. But I don't ...
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How to retrieve infos about creators with sparql in wikidata

I'm trying to retrieve infos about birth and death corresponding to paintors with this query, however I have an empty result if I uncomment birth and death infos. # added before 2016-10 # Recherche de ...
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How can I override this «Query is malformed: Bad aggregate» error message?

I'm working with a Wikidata query: SELECT DISTINCT ?protected_area ?protected_areaLabel ?coordinate_location ?territorialEntity ?territorialEntityLabel (SAMPLE(?instance_of) AS ?instance_of) ?...
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24 views

SPARQL to get Wikidata items that have no P18 image but have a Commons image depicting them?

Many Commons images depict Wikidata concepts. How to find these concepts, in particular those that do not have an image (P18) property? The request should output the URIs of both the Wikidata item ...
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26 views

Whole word entity search on Wikidata

Wikidata wbsearchentities service seems perform prefix-based matching, e.g. searching for novel matches as expected: novel : narrative text, normally of a substantial length and in the form of prose ...
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59 views

Torrent for Wikidata dump

I'm looking for Wikipedia (enwiki-latest-pages-articles-multistream.xml.bz2) and a Wikidata (latest-all.json.bz2 ) dumps. The files are quite large (the latter has ~47GB) and my internet connection ...
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Filtering Wikidata Search

Wikidata today is not only an ontology but also a catalog of publications: scientific articles, formal documents (law), etc. are registered, millions of Wikidata-items. So, when using Wikidata's ...
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Airline Distribution system Data

Appreciate it if anyone can suggest an online data source to capture the below information. Airline | Country | number of Fleet | Number of Destinations | Airline PSS (Passenger Service System) ...
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30 views

How do I extract certain articles from Arabic Wiki Dumps?

I need to collect all articles that are about countries and continents in Arabic from Wikipedia. I was wondering how do I find these articles if I downloaded the latest wiki dump? New to the field. ...
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39 views

Does Wikidata offer inferencing/reasoning?

I would like to use RDFS level inferencing in some queries posed in the Wikidata Query Service which uses SPARQL. Does it support inferencing/reasoning? If so, in what kind? For example, is it Forward ...
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16 views

Looking for foot pressure database collected from pressure sensors

I am working on a project where where I need a foot pressure data that a person put on his foot while walking, running or doing any other practice. I searched a lot in the search engines and I couldn'...
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44 views

Query wikipedia links

I'm using the following query to receive label and description of all Wikidata-entries with geo-location in a geo-bounding box: SELECT DISTINCT ?place ?placeLabel ?placeDescription ?location WHERE { ...
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43 views

Find all Wikidata items whose image (P18) URL contains a certain word

I am trying to find all Wikidata items whose P18 property is an URL that has the word "Montage" anywhere in its filename. Example: I managed to find items by their complete P18 filename: SELECT ?...
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139 views

SPARQL get all the data before it reaches timeout

I am trying to get all the city names of all countries in the world using this below query. Whenever I execute this below query it returns this message "Query timeout limit reached". Is there any ...
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Find most-depicted Wikidata items that have no image

Wikimedia Commons has a new feature where a picture can have metadata saying it depicts a given Wikidata item. For instance, https://commons.wikimedia.org/wiki/File:Grandpark_Plaza.jpg depicts https:/...
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How come there are missing entities in this SPARQL query?

I was interested in listing all books, so I wrote: SELECT ?book ?url WHERE { ?book wdt:P31 wd:Q571 . OPTIONAL { ?url schema:about ?book . ?url schema:inLanguage "en" . ?url schema:isPartOf <...
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How to find the wikidata ID of a DBpedia concept?

I have a set of DBpedia concepts and would like to get the corresponding wikidata IDs of them. For example, consider word2vec. The wikidata ID of word2vec is wd:Q22673982. Currently, I have the ...
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SPARQL - Filter wikidata identifiers

Query below gives me all programming languages entities, with their statements. Problem is that I don't need identifiers now, but these IDs might become necessary. I was just gonna model database ...
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44 views

Wikidata SPARQL - get company entities and the location of their headquarters

I'm having trouble extracting location attributes of company HQ's. My query: finds all companies or sub-classes, and returns some basic properties such as ISIN and URL, and the Headquarter location. ...
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SPARQL query to get capacity of event venues from Wikidata

I am trying to query Wikidata to find out the capacities of all event venues in specific geographic regions (US urban centers). They have this service for querying: Wikidata Query Service The answer ...
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How to distinguish between human and animal bones in Wikidata?

The two topics https://www.wikidata.org/wiki/Q16343 (Clavicle) https://www.wikidata.org/wiki/Q835986 (Baculum, Penis bone) are both instances of Q265868 (Bone). However, the clavicle is a human (...
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How to use wikidata property paths?

Given a term/concept, I want to decide if it belongs to computer science. For that, I am checking if the concept has a property path to computer science node. In other words, I am checking whether ...
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Wikidata SPARQL How to speed up this query?

I have come to this query, which retrieves wikipedia and wikidata info from a wikipedia title: SELECT ?wikipediaId ?wikipediaTitle ?wikidataId ?desc ?imageUrl (GROUP_CONCAT(?instanceOfS; SEPARATOR=";"...
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Wikidata Sparql Getting properties from a Wikipedia generator list

I am trying to get the properties that the linked pages from a wikipedia page have. SELECT ?item ?wikipediaTitle ?target WHERE { SERVICE wikibase:mwapi { bd:serviceParam wikibase:endpoint "en....
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43 views

Wikidata Query: How to retrieve the normal (non-verbose) JSON?

We can download the results of a Wikidata Query as "JSON file" or "JSON file (verbose)" Example link of random query: http://w.wiki/WQ. I am developing a javascript software which retrieves some ...
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27 views

Wikidata SPARQL get current VALUES index

I have the current SPARQL code: SELECT ?currentQid ?propQid ?targetQid WHERE { VALUES ?current {wd:Q5 wd:Q6 wd:Q7 wd:Q8 wd:Q9} VALUES ?prop {wdt:P31 wdt:P279 wdt:P361} BIND (STRAFTER(STR(?...
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Does Wikidata contain the data from the Wikipedia {{distinguish}} template?

Wikipedia uses the {{Distinguish}} template for pages whose subject is easily confused with another subject. For example, the two Congo countries are frequently confused with each other, so their ...
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1answer
61 views

Wikidata SPARQL with optional qualifiers

I am trying to adapt the Mona Lisa exercise in the Wikidata SPARQL tutorial so it will show all the materials used and where they apply. If I simply do: SELECT ?painting ?paintingLabel ?material ?...
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48 views

Expand Wikidata SPARQL query to self-join

I have this query to get the population of cities and the country they belong to: SELECT ?city (?population as ?city_pop) ?country ?countryLabel ?continent ?continentLabel ?cityLabel WHERE { ...
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1answer
205 views

How to output only English labels in SPARQL query?

I don't understand why this SPARQL queries produce duplicates: SELECT DISTINCT ?WikidataItem ?itemLabel WHERE { ?WikidataItem rdfs:label ?itemLabel. ?WikidataItem ?label "Mozilla Firefox"@en. ...
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42 views

Wikidata - Filter or Detect or Get incomplete date

I've the following query PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> SELECT ?item ?itemLabel ?dod ?dob WHERE { ?item wdt:P570 ?dod. ?item wdt:P31 wd:Q5. SERVICE wikibase:label { bd:...
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61 views

What are Outlink categories of Wikipedia

I am wondering if it is possible to view outlink categories of a given article in Wikipedia? For example, consider the Wikipedia article about 'Data Mining'. What are the outlink categories of "Data ...
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1answer
61 views

Limiting a SPARQL Query to Lastest Point in Time

I'm trying to get information on Prefectures in Japan out of Wikidata. I succeeded to read the population statement, however there are occasionally several values with different point in time fields. ...
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96 views

How to get specific wikipedia data?

I only want to use the link structure and articles’ content of Wikipedia. Therefore, I want to downlaod the dump that contains only the following details. articles content link structure (i.e. re-...
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1answer
89 views

Get list of all wikidata properties used to link to an item

The first part of my question is, is there a SPARQL equivalent of the "What links here" link? E.g. as described at https://opendata.stackexchange.com/a/5271/20321 I tried: WHERE { ?item wdt:?...
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1answer
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Wikidata: How to represent British Hong Kong's under Japanese occupation?

Between 1941 and 1945, British Hong Kong (then a colony) was occupied by the Japanese, see this Wikipedia article. However on British Hong Kong's Wikidata page, there's no mention of the Japaneses ...
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1answer
38 views

Wikidata on all Trump's executive orders

I'd like a wikidata query that returns all executive orders signed by President Trump. This query gets all executive orders: https://query.wikidata.org/#SELECT%20%3Forder%20%3ForderLabel%20WHERE%20%...
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105 views

Numerically order SPARQL results that are external identifiers but actually all numbers

I wrote this query to list Wikidata items that have an RFC identifier: SELECT ?rfcId ?itemLabel ?classLabel ?item WHERE { ?item wdt:P31 ?class. ?item wdt:P892 ?rfcId. SERVICE wikibase:label { ...
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28 views

Filter wikidata results with 'around' service

Is it possible to use the "around" service as a filter, for example to search for a place name in a country and limit results to those within a given distance of a known point. For example, limit ...
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63 views

How can I query Wikidata for a label and optional image without further constraints?

I made a derivation of the cats with images example where I query for a specific cat, in particular its label and a possible image (in the web interface): SELECT ?item ?itemLabel ?pic WHERE { ...
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1answer
78 views

Why does Wikidata's query interface return no results for entities with an id of Q10000001 or higher?

I have this SPARQL query to return an item's label and the url of a Wikipedia article: PREFIX schema: <http://schema.org/> PREFIX wd: <http://www.wikidata.org/entity/> SELECT ?article ?...
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1answer
83 views

Julian and Gregorian dates from Wikidata

How can I get the Julian birth or death date for someone who was born or died under the Julian Calendar (Isaac Newton, for example) on Wikidata using a SPARQL query? This simple query returns "4 ...
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42 views

Restrict returned claims in entity

Is there a way to restrict the returned claims on wikidata's REST API? For example I am using this query: https://www.wikidata.org/w/api.php?action=wbgetentities&ids=Q17714&props=claims&...
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1answer
57 views

How can I get data about Wikipedians (e.g. language proficiency), by username?

Is there an open dataset containing information such as username, language proficiency levels (https://en.m.wikipedia.org/wiki/Wikipedia:Babel/Levels) and (possibly) academic degrees and nationality ...
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1answer
38 views

Search in wikidata with specific Q code

I've this query but I can't understand why doesn't return any result. I try different versions (with link, with only code, with wd:code) but nothing seems to work. What I need is this query but ...
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2answers
100 views

Mapping between ImageNet and Wikidata entities

Wikidata and ImageNet both know oxcarts: https://www.wikidata.org/wiki/Q1190777 http://imagenet.stanford.edu/synset?wnid=n03868242 (slow) An AI library gives me the ImageNet "synset" about oxcarts. ...
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110 views

How to use DBpedia to identify the topics

In the paper "Discovering Relevant Topics using DBPedia providing non-obvious recommendations" they have used skos:broader property and dcterms:subject property. In my task given the word I want to ...
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1answer
141 views

Weird results in search from wikidata

I ve this query, which i want to find every instance of human with name Jose (already a first name like John, very common) in wikidata spanish, and then I get only 10 results. I believe is the way of ...