RDF* and SPARQL*
Reification can be pretty cool.
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bobdc.blogBob DuCharme's weblog, mostly on technology for representing and linking information. |
May 28, 2018
April 22, 2018
Reification is a red herring
And you don't need property graphs to assign data to individual relationships.
August 20, 2017
Validating RDF data with SHACL
Setting some constraints--then violating them!
July 30, 2017
The W3C standard constraint language for RDF: SHACL
A brief history of the new standard and some toys to play with it.
Continue reading "The W3C standard constraint language for RDF: SHACL" »
February 26, 2017
Getting to know Wikidata
First (SPARQL-oriented) steps.
November 13, 2016
Pulling RDF out of MySQL
With a command line option and a very short stylesheet.
August 28, 2016
Converting between MIDI and RDF: readable MIDI and more fun with RDF
October 17, 2015
Data wrangling, feature engineering, and dada
And surrealism, and impressionism...
Continue reading "Data wrangling, feature engineering, and dada" »
November 12, 2012
Selling RDF technology to Big Data
A clue: what we're selling is just that—RDF technology.
July 31, 2012
Properties
Children's edition.
April 29, 2012
Simple federated queries with RDF
A few more triples to identify some relationships, and you're all set.
March 31, 2012
Playing with SPARQL Graph Store HTTP Protocol
GETting, POSTing, PUTting, and DELETEing named graphs.
Continue reading "Playing with SPARQL Graph Store HTTP Protocol" »
February 23, 2012
Pull RDF metadata out of JPEGs, MP3s, and more
With open source Apache software.
Continue reading "Pull RDF metadata out of JPEGs, MP3s, and more" »
August 16, 2011
RDFa can be so simple
Despite claims to the contrary.
July 8, 2011
Linking linked data to U.S. law
Automating conversion of citations into URLs.
May 9, 2011
Quick and dirty linked data content negotiation
Not even that dirty.
Continue reading "Quick and dirty linked data content negotiation" »
March 25, 2011
From a Wikipedia page to the corresponding DBpedia page in one click
And a similar link for Freebase.
Continue reading "From a Wikipedia page to the corresponding DBpedia page in one click" »
August 11, 2010
Converting CSV to RDF
The simplest way yet.
June 17, 2010
Replace Facebook with FOAF + twitter + ?
Making the first connection.
Continue reading "Replace Facebook with FOAF + twitter + ?" »
April 30, 2010
What's wrong with undeclared classes and properties?
It's not like the RDF spec requires them.
Continue reading "What's wrong with undeclared classes and properties?" »
January 12, 2010
Live stock ticker data in RDF
Well, on a 20-minute delay.
November 11, 2009
Simple semi-structured data entry
August 21, 2009
DevX article on using RDFa with DocBook and DITA
June 2, 2009
SearchMonkey and RDFa
What am I missing?
May 27, 2009
"Semantic Web for the Working Ontologist"
And for anyone interested in working with ontologies.
Continue reading ""Semantic Web for the Working Ontologist"" »
May 22, 2009
Writing about the Semantic Web
And Linked Data, and RDF, and RDFa, and SPARQL, and OWL, and...
May 15, 2009
Google and RDFa: what and why
Surprise—to make more money!
March 19, 2009
Getting started with Open Anzo
Don't miss the exciting command line video demo!
March 15, 2009
Some use cases to implement using SPARQL graphs
Or not; I'm open to suggestions.
Continue reading "Some use cases to implement using SPARQL graphs" »
March 1, 2009
Some questions about RDF named graphs
Trying to connect the data structure to real-world use.
February 16, 2009
Getting started using Virtuoso as a triplestore
The open source edition.
Continue reading "Getting started using Virtuoso as a triplestore" »
February 12, 2009
Getting started with Sesame
Surprisingly easy.
January 26, 2009
Playing with some RDF stores
Instead of blogging.
October 23, 2008
New XMP spec
And the W3C thought they had a problem dating XML Recommendation releases.
June 11, 2008
Navigating Hollywood gossip with semantic technology
And news in the worlds of investment, U.S. politics, and more.
Continue reading "Navigating Hollywood gossip with semantic technology" »
April 14, 2008
Digging RDFa
More data to play with, more tools to play with it.
April 1, 2008
RDF and social networks
Better than XML!
February 4, 2008
The future of RDFa
Think big.
August 31, 2007
Automated RDFa Output from DITA Open Toolkit
A replacement module to make it easy.
Continue reading "Automated RDFa Output from DITA Open Toolkit" »
May 22, 2007
Finding useful RDF data on the web
At rdfdata.org or elsewhere.
February 9, 2007
Generating RDFa from Movable Type, Part 2
Why generate metadata that's redundant with data?
Continue reading "Generating RDFa from Movable Type, Part 2" »
January 25, 2007
Generating RDFa from Movable Type
Easy to generate, easy to use.