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Questions tagged [linked-data]

Linked data is a method of publishing structured data so that it can be interlinked and become more useful through semantic queries.

20
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9answers
4k views

Any uses of JSON-LD?

The formal semantic web, now linked data, using RDF is largely flailing in most regions outside the UK. The main problem is the complexity in implementation compared with the tools typically used by ...
14
votes
2answers
241 views

5-star Open Data rating scheme, are there URIs for the ratings?

I'm in the process of constructing a DCAT catalogue and we want to show how each dataset conforms to the 5-star open data rating scheme. I assumed that someone would have coined URIs for each rating ...
12
votes
4answers
2k views

What is the major difference between Open data and Linked data?

Although this is not an apple to apple comparison and there is significant overlap i would like to know examples or specific cases where a data set falls into either category but not both. Can data be ...
11
votes
3answers
340 views

Why isn't RDF more popular within the private sector?

I've learned about the idea of storing data in the form of triples not too long ago. This is essentially what RDF allows and since I've started using this to model my data, I've never really looked ...
10
votes
2answers
174 views

Government shutdown causing linked open data to go away

With the government shutdown now upon us, and many groups going to be performing an 'orderly shutdown' of their systems in a few hours... How can systems that rely on linked open data make sure that ...
9
votes
6answers
2k views

What Linked Data serialization format to choose for our (now CSV) open data?

We have open data as a CSV file, about 200k lines, columns are mostly text. In order to make it into Linked Data and be easily reusable by as many mashups/apps/etc as possible, we want to propose ...
9
votes
2answers
407 views

What needs to be done to be 4 or 5-star open data?

I work at a University which is trying to open up some of its data. We make some of our data available as PDF or Excel documents. The 5-star deployment scheme has been referenced a fair bit in Europe ...
8
votes
6answers
3k views

What examples are there of Linked Data/RDF being used for open data applications?

I like to criticise strong linked data (i.e. not just REST/HATEOAS) for being impractical and too strongly based in academia. Now, I want to be proven wrong: have any end-user open data applications ...
8
votes
3answers
357 views

What is a good editor for linked data?

I mainly serialize linked data through the Java Jena library. One of the features I really like is where you create a java class from an OWL file, which in eclipse enable autocomplete, when coding an ...
8
votes
2answers
752 views

Extract labels from Wikidata entity

Is there a way to extract the labels of the statements (property and object) in Wikidata? I want to get all the information that there is here:https://www.wikidata.org/wiki/Q42, properties and objects ...
8
votes
1answer
76 views

Which namespace should be used for an open vocabulary published by a private organization?

If you want to contribute a Vocabulary to the LOD community but work for a (commercial) company, the question arises within which (DNS) domain you define the vocabulary/ ontology namespace URI/ IRI? ...
7
votes
4answers
230 views

Displaying Trust and Data Provenance?

What would be the most useful way to display data provenance on an open data site? Overarching statements on the site seem to be limited in that amongst many datasets, at least some will likely have ...
7
votes
4answers
197 views

Best practices for huge explorable linked data directories

The main requirements for our open data directory are: XML-based by default with ability to switch to JSON. It's important the easy way to make it human readable with just linking to XSL. All the ...
7
votes
2answers
87 views

GIThub to share a set of SPARQL queries

I am using github to share a set of SPARQL queries: http://www.boisvert.me.uk/opendata/sparql_aq+.html?file=specific%20sensor.txt Currently the simple work allows end-users to access queries stored ...
7
votes
1answer
87 views

Data management practices

Software has code repositories and package managers, so installation and maintenance are done in one line (or click). What are practices for managing data, instead? Apart from manually organized ...
6
votes
4answers
310 views

Is there a vocabulary for linking weather data?

I've got a weather station and want to publish the data in JSON-LD. For the context file I'm searching for a vocubulary to express the weather data. Is there already a vocabulary or 'setup' for ...
6
votes
3answers
306 views

How should I adapt a Schema.org microdata format for legislation?

Has anyone adapted a microdata format from schema.org for pieces of legislation?
6
votes
2answers
105 views

Are there any open datasets with technical specifications for photographic equipment?

I want to set up a free service where photographers buying or searching for discontinued photographic equipment can reference for technical specifications. For instance, most eBay-listings of second-...
6
votes
1answer
139 views

Linked Open Data Statistics

Where i can find a good document about Statistics of Linked open data cloud (organizations, number of triples and number of links) year by year? In the official web site (lod cloud) there's only ...
5
votes
1answer
93 views

How to get my data accepted in the Linked Open Data Cloud Diagram?

The Linked Open Data Cloud Diagram is a cool diagram showing about 570 datasets: What are the steps to get my dataset into the next version of this diagram? And more importantly, what are the ...
5
votes
1answer
199 views

“DBpedia as Tables” not having all the properties

I browsed a sample for available data at http://dbpedia.org/page/Sachin_Tendulkar. I wanted these properties as columns, so I downloaded the CSV files from http://wiki.dbpedia.org/DBpediaAsTables. ...
5
votes
1answer
115 views

What should I think about when making JSON data into JSON-LD?

I've added a little more of my work to show how I'm thinking I hope this question isn't too broad. I'm thinking through a number of things and thought I'd try to put a "basic" question down here. I ...
5
votes
1answer
145 views

Linked Geospatial Data in WFS

At the Swedish University of Agricultural Sciences we have released some data based on the requirements of the INSPIRE directive. We use Geoserver which provides us with a number of standard ...
4
votes
1answer
171 views

Who are non-schema.org data standards for?

I'm a contributor to a project that presents municipal legislation to the public. I have been reading about the Popolo project http://popoloproject.com/ and other data specifications for legislation ...
4
votes
1answer
96 views

how to get semantic ontology of words related to technology

I would like to get some semantic ontology of words related to technology. Is there a way or a place I can get these kind of informations ?
4
votes
1answer
181 views

Are there any dataset for psychology

I am looking for a triple RDF dataset or vocabulary for a psychology website I am developing. I have a large XML schema database and am looking to translate this database to one RDF serialization ...
4
votes
1answer
97 views

Other than for nobel prizes, is there some award's/prize's linked data available?

Other than for nobel prizes, is there some award's/prize's linked data/rdf/schema available?
4
votes
2answers
157 views

U.S. federal government data fetchable via SPARQL?

I am interested in U.S. federal government information (e.g., agencies/sub-agencies, programs, etc) that I can fetch via the Semantic Web/SPARQL. I am able to get this information via Dbpedia. The ...
3
votes
2answers
77 views

Can Linked Data URIs be parameters?

I'm still looking into Linked Data and what it takes to get up to the fourth and fifth star of Tim Berners-Lee's 5-Star classsification. We are to use URIs to denote things. I'm wondering if URIs can ...
3
votes
1answer
121 views

Linked Data vs Linked Open Data

I do know what Linked data means and what Open data means. However, today I found that there is something called Linked Open Data Is it the same as Linked data or not please?
3
votes
1answer
320 views

What triplestore that can handle the largest number of triples?

A triplestore is a special database engine containing information triples and answering to SPARQL requests. What is currently the triplestore that can contain most triples, while still being able to ...
3
votes
1answer
51 views

What does the second “rule” of linked data mean?

I am reading the four principles for linked data. the second one is Use HTTP URIs so that people can look up those names. I couldn't understand it. I tried to read some on internet but still ...
3
votes
1answer
68 views

Where should I host/contribute a mapping from Stack Overflow tags to Wikipedia articles?

I had asked for a mapping from Stack Overflow tags to Wikipedia articles over at meta.stackoverflow, but no one seemed to find one, so I started building my own. Where is the "right" place for me to ...
3
votes
1answer
38 views

YAGO entity details

I recently came across an article where they have mentioned that YAGO has more entities than DBpedia. It also mentions that "Recently, a new version of YAGO has been released, which also accounts for ...
3
votes
2answers
102 views

How to link a new dataset to an existing dataset?

I have to construct a dataset of hospitals. For each hospital, I will indicate the the town/region in which it is located. I already have dataset of towns/regions of the concerned geographic area. ...
3
votes
1answer
161 views

Data on Android/iPhone apps by user?

I am trying to get my hands on data about app usage (iPhone and Android) by user. The users would be anonymised I assume, but I would need to link them to the range of apps they use or have installed ...
3
votes
0answers
90 views

Using Wikidata to practically leverage semantic linked data for content annotations

I swimming the huge sea of semantic Web and Linked Open Data (LOD) to use these knowledge bases for annotating semantically biological experiment of my organisation. My idea consists of: RDF-izing ...
3
votes
0answers
51 views

Should a Linked Data Platform (LDP) server answer to a request for a container that does not exist in the dataset?

I'm developing a partial implementation of the LDP specification and I have the following issue: Suppose that my dataset contains book resources with URIs like: http://example.org/book/lord-of-the-...
2
votes
2answers
98 views

API to use Klink-2 Computer Science Ontology (CSO)

I came across this interesting paper that make use of the Klink-2 Computer Science Ontology (CSO): Automatic Classification of Springer Nature Proceedings with Smart Topic Miner Where can I find an ...
2
votes
1answer
107 views

Too few results from DBpedia

I am using the following query to get Athletes data from DBpedia SELECT * WHERE { ?player a <http://dbpedia.org/ontology/Athlete> . ?player foaf:name ?firstname . ?player foaf:surname ?...
2
votes
1answer
85 views

In dbpedia vocabulary, why is class “City” not linked with class “Country”?

In dbpedia vocabulary, why is class "City" not linked with class "Country" ?
2
votes
1answer
46 views

making my data LOD-compatible

I would like to incorporate the LOD (Linked Open Data) concept an app I built. My app is a map where users search and can find points on the map, click them and get relative text and multimedia. ...
2
votes
1answer
143 views

How to crowd source open data

Is there a way to get a list of the top accessed open data sets by organizations and the organizations which use them?
2
votes
0answers
20 views

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 ...
2
votes
0answers
29 views

Real world objects and digital contents represented in RDF

Not sure if this is the appropriate forum for this question, especially after the Dataversity Q&A site shutdown, so please feel free to suggest better avenues. I am implementing an LDP server ...
2
votes
0answers
97 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 ...
2
votes
0answers
55 views

Bulk processing XBRL into MySQL

I am working on a project involving processing a large volume of XBRL documents (> 1m separate files). I am totally new to XBRL and feeling quite lost at the moment, only downloaded Arelle 20 minutes ...
2
votes
0answers
21 views

Is there a vocabulary for linking machine data on the shopfloor?

I've got a gateway that reads machine data on the shopfloor, e.g. running hours notifications ("low oil pressure",...) temperatures inside machine The gateway should publish this data in JSON-LD. ...
1
vote
1answer
146 views

Get the details of all Indian films from Wikipedia

My application needs the details of All Indian movies. I can't take it from IMDB or OMDB because the number of Indian movies is too less there. I need to fetch it from Wikipedia. Freebase is ...
1
vote
1answer
31 views

Is there a list of linked data from resources mentioned in the annual NAR database issue?

The Journal Nucleic Acid Research releases an annual issue on biological databases. Does there exist a subset containing biological resources from the NAR database issue that is exposed as linked data?...