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6 votes

Why is the Open World assumption so central to the semantic web?

Speaking as a practitioner, this is my best understanding of the open-world-assumption - I never really found a good explanation of its impacts. I would kindly invite anyone to correct or extend on ...
darth_willy's user avatar
5 votes

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

In order to make it into Linked Data and be easily reusable by as many mashups/apps/etc as possible.. It seems you are talking about RDF dumps, but there are other ways to provide access to RDF data, ...
Stanislav Kralin's user avatar
4 votes
Accepted

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

I'm not sure I agree that you need to have any URI to demonstrate how open a set of data is. Either the data is open and shareable or it is not, the openness of the data is described by the openness ...
nmtoken's user avatar
  • 566
3 votes

How can I download the complete Wikidata database?

As you already found out the Dumps of wikidata are readily available and can be downloaded and unzipped in a few hours. Getting a proper RDF database server running with such dumps is another story. ...
Wolfgang Fahl's user avatar
3 votes

Where can I find databases in .rdf or in .ttl format

Information Retrieval Dataset - Internet Movie Database (IMDB) Description This dataset was constructed for an Information Retrieval research project to obtain a master's degree at the Federal ...
Orophile's user avatar
  • 1,761
3 votes

How to find the wikidata ID of a DBpedia concept?

Q1: Are all DBpedia concepts associated with its relevent wikidata ID? Those kind of links are usually generated by the people on either side into the direction of the other side. Since it is ...
np00's user avatar
  • 131
3 votes
Accepted

What tool can I use to manage a researcher network bibliography?

ORCID provides a persistent digital identifier that distinguishes you from every other researcher and, through integration in key research workflows such as manuscript and grant submission, supports ...
albert's user avatar
  • 11.9k
3 votes
Accepted

Are there any dataset for psychology

The Thesaurus of Psychological Index Terms, published by one of your employer's (?) customers, is known now as Psychology Ontology. This ontology is not even a taxonomy, but rather a flat list of ...
Stanislav Kralin's user avatar
3 votes
Accepted

How to embed licenses within SVG?

This is not RDFa, but rather embedded RDF/XML, which is allowed by the SVG Tiny 1.2 Specification. There are the following errors: <cc:license> instead of <cc:License> in lines 26, ...
Stanislav Kralin's user avatar
2 votes

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

I would suggest just uploading it to https://data.world (disclaimer: I work there, but it's free). It's easy for other users to get it in a few different ways (whether it's a download, API, or a ...
scuttlemonkey's user avatar
2 votes

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

https://gist.github.com/VladimirAlexiev/fafdcb258d067cfed272664d6ae5d982 describes 6 datasets of Science Classification. Will keep it up to date as we progress. One of them is CSO, which is now ...
Vladimir Alexiev's user avatar
2 votes
Accepted

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

It is unlikely that the entire Klink-2 Computer Science Ontology is openly available online. The authors decide to monetize their research creating Rexplore. It seems that the generated CSO ontology ...
Stanislav Kralin's user avatar
2 votes

How to identify general terms using LOD?

There is no global "LOD hierarhy" of terms. There are various ontologies and knowledge bases, and each has its own idea of the world. I'd use Wikidata items for the the terms that you've mentioned. ...
Vladimir Alexiev's user avatar
2 votes
Accepted

How to get specific wikipedia data?

Data dumps are at https://dumps.wikimedia.org/enwiki/20181201/ (currently). Article content (source code) is in the pages-articles files (e.g. enwiki-20181201-pages-articles.xml.bz2 is all pages in a ...
Tgr's user avatar
  • 216
2 votes

How to get specific wikipedia data?

For the later (categories, pages,...) I recommend using the various dumps that are available from the Wikidata project. The dumps are available at the Wikimedia dumps source. The RDF format is ...
SeDav's user avatar
  • 121
2 votes
Accepted

Can we use DBpedia for identifying Polysemy of words?

First, I assume all NLP-related aspects are subtracted from your question. DBpedia is considered as belonging to the Linguistic Linked Open Data Cloud (interactive SVG), but I'd suggest to try more ...
Stanislav Kralin's user avatar
2 votes

Data integration tool that supports Semantic Web

I would suggest looking at https://data.world for the data aggregation right now (disclaimer, I work there...but it's a free resource). You can aggregate multiple data sources quite easily. Our entire ...
scuttlemonkey's user avatar
2 votes
Accepted

How to build a concept hierarchy using LOD?

Possible answers were listed in your previous questions. Perhaps some upper ontologies contain what you need. Another possible source is Wikidata. For example, this is SVM's page on Wikidata. As you ...
Stanislav Kralin's user avatar
2 votes
Accepted

What is the hypernym field in DBpedia?

<http://purl.org/linguistics/gold/hypernym> is a property from the GOLD linguistic ontology. See http://linguistics-ontology.org/gold/hypernym.
Stanislav Kralin's user avatar
1 vote

How to get the path details between two nodes in DBpedia in SPARQL

Your question shows <> which is not a valid property or wildcard. You cannot use property variables (wildcards) in property paths. So you need to understand the structure of how dct:subject and ...
Vladimir Alexiev's user avatar
1 vote

Public RDF Ontology for Football (soccer) or Tennis?

There is dbo:FootballMatch, or dbo:SportsEvent in general, and also dbo:SoccerTournament and dbo:TennisTournament. There is no dbo:SoccerMatch or dbo:TennisMatch, but you can link individual matches ...
IS4's user avatar
  • 111
1 vote
Accepted

Linking data and making it available as linked data

If the source doesn’t provide a URI which represents the work/concept (in addition to the URI that represents the actual image file, and separate from a webpage about the photograph), I think it makes ...
Stefan - brox IT-Solutions's user avatar
1 vote
Accepted

Does it make sense to restrict the meaning of an external entity for our purposes?

This is what rdfs:subClassOf/rdfs:subPropertyOf is for. So yes, recreate these classes in your own namespace, narrowing the meaning. If you can express the restriction in terms of an owl:...
hroptatyr's user avatar
  • 246
1 vote

Where can I find databases in .rdf or in .ttl format

You can query DBPedia yourself, and ask it for information about certain Musicians. The shell command curl -sL -H "Accept: text/turtle" "http://dbpedia.org/resource/Iggy_Pop" ...
knb's user avatar
  • 1,237
1 vote

Ontology for theme of a text

For a straight theme, use <doc> dc:subject "foo" To add confidence, you can use RDF*: << <doc> dc:subject "foo" >> my:confidence 0.962 But maybe RDF* is ...
Vladimir Alexiev's user avatar
1 vote
Accepted

YAGO entity details

YAGO Demo page lists two possible ways: Explore YAGO with our graph browser (YAGO3) Explore YAGO with our ontology browser (YAGO2) You can find what you need using query builder. There also ...
Stanislav Kralin's user avatar
1 vote

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

The Computer Science Ontology (CSO) is freely available at http://cso.kmi.open.ac.uk/ since 2018, and it can be downloaded in a variety of formats. You can also subscribe to the site and give your ...
Francesco Osborne's user avatar
1 vote
Accepted

How to extract DBpedia infomation

Here below I'm using examples from comments to your previous question. Linked Data Fragments For simple queries, you could use Linked Data Fragments: Query 1 Query 2 Add Accept: application/json ...
Stanislav Kralin's user avatar
1 vote

Which RDF predicates to use to annotate: fileX "has hash" 01ABCF "of type" sha256 "downloaded from site" http://url/to/page?

Use Wikipedia urls to identify the hash type. (That's 5 star out of the box) For your other questions use Linked Open Vocabularies. If that fails, use your own URLs (5 star please) and if you later ...
Grimaldi's user avatar
  • 488
1 vote

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

Short answer You should create these URIs yourself, as well as mainteiners of all other DCAT catalogues. Long answer Look at Data Quality Vocabulary, which is based on DCAT. Consider the following ...
Stanislav Kralin's user avatar

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