Questions tagged [semantic-web]

Representation of database record subjects (a/k/a keys, IDs, entities), predicates (a/k/a columns, attributes), and objects (a/k/a values) as triples, where the first two are always URIs, and the third is either a URI or a literal; enabling humans and machines to more easily share, merge, and evaluate data from heterogeneous origins.

The Semantic Web (Web 3.0) provides a common framework that allows data to be shared and reused across application, enterprise, and community boundaries. It is a collaborative effort led by the W3C with participation from a large number of researchers and industrial partners. It is based on the Resource Description Framework (RDF).

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What is the difference between RDF and OWL?

I am trying to grasp the concept of Semantic Web. I am finding it hard to understand what exactly is the difference between RDF and OWL. Is OWL an extension of RDF or these two are totally different technologies?
user32262
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Semantics and Structure of Name-Value Pairs

This is a question I have been struggling with for a while. What is the proper way to mark up name/value pairs? I'm fond of the
element, but it presents a problem: There is no way to separate one pair from another - they have no unique…
Ryan Kinal
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Microdata vs RDFa

I have a quick question about RDFa and Microdata. My current understanding is that RDFa is RDF implemented into HTML but is complicated for new developers like myself, Microdata seems really easy and quick to implement. What are the other advantages…
user1043646
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What is the semantic web?

I've heard a lot about the semantic web but I'm still not exactly sure what it is. How will it be different to the web we know now?
Matthew James Taylor
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Triple Stores vs Relational Databases

I was wondering what are the advantages of using Triple Stores over a relational database?
Sam
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Are there any tools to visualize a RDF graph? (please include a screenshot)

I'm looking for a tool that will render a RDF graph in a reasonably useful graphic format. The primary purpose of the graphic format being inclusion into a PowerPoint slide or printing on a large plotter for management review. I am currently using…
Eric Schoonover
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Great RDF visualization tools

I want to find some great tools or styles to visualize my RDF data so that it can give viewers a shock when they access the RDF data. The problem is that the visualization tools I get now can just generate some simple styles (node,edge...) like…
ChandlerQ
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Entity Extraction/Recognition with free tools while feeding Lucene Index

I'm currently investigating the options to extract person names, locations, tech words and categories from text (a lot articles from the web) which will then feeded into a Lucene/ElasticSearch index. The additional information is then added as…
Karussell
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How are RDF and RDFS related?

I've been reading about Semantic Web technologies such as RDF/RDFS and "ontology", but was wondering how each of these are related? At the moment the terms all seem interchangeable, or I'm not understanding a fundamental concept here.
Webster Thesaurus
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Schema.org give a div a itemprop="image"?

I am replacing an image with a
with background-image for the reason of background-size: cover; The page is structured the same way as before with a image just that "the image" is a div now. Does is makes sense to give that itemprop to a
?
Wayne's World
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What is the difference between GraphQL and SPARQL?

I'm doing a lot of research right now on Semantic Web and complex data models that represent relationships between individuals and organizations. I knew a little semantic ontologies although I never understood what it was used if not make graphs. I…
Erwan Pesle
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Is there any killer application for Ontology/semantics/OWL/RDF yet?

I got interested in semantic technologies after reading a lot of books, blogs and articles on the net saying that it would make data machine-understandable, allow intelligent agents make great reasoning, automated & dynamic service composition…
user304867
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Is semantic markup too open-ended?

I am taking a peek at Dive Into HTML5. It seems nice and interesting, but I am puzzled. In the 1990s, at the time when Netscape was the browser and HTML was HTML2 or HTML3, there were a lot of tags: address, cite, code... Most of them are unused as…
Stefano Borini
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Should I use or ?

In html 5, rel="author" is used to link to information about the author of the page. This can be a mailto: address, though it doesn't have to be. It could simply link to a contact form or "about the author" page (I personally wouldn't want to…
Donald Jenkins
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What is the relationship between RDF, RDFa, Microformats and Microdata

I've done quite a bit of research but I can't understand the exact relationship between the 3. Also, now that W3C has officially recognised RDFa, would you recommend it over Microdata, taking into consideration that it matches Microdata's features…
aelsheikh
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