This is a followup to my Syndicating trust? Mediawiki, Wordpress and OpenID post. I now have a simple implementation that exports data from WordPress: the F2F plugin. Also some experiments with consuming aggregates of this information from multiple sources.
FOAF has always had a bias towards describing social things that are shown rather than merely [...]
Category Archives: SPARQL
WordPress trust syndication revisited: F2F plugin
Also posted in FOAF, RDFa, Semantic Web, Technology, coding, ggg, openid, privacy 11 Comments
Quick clarification on SPARQL extensions and “Lock-in”
It’s clear from discussion bouncing around IRC, Twitter, Skype and elsewhere that “Lock-in” isn’t a phrase to use lightly.
So I post this to make myself absolutely clear. A few days ago I mentioned in IRC a concern that newcomers to SPARQL and RDF databases might not appreciate which SPARQL extensions are widely implemented, and which [...]
Also posted in Semantic Web, Technology, coding 4 Comments
Rick Jelliffe on XML Schema
From the TAG list:
XML Schemas is like using a Swiss Army knife to cook with. Most Asian kitchens get by with a handful of simple tools: chopsticks, hatchet, a good knife, perhaps even a spoon. But the logic of the XSD WG is “Oh, the French need to make quenelles, we must have [...]
Skosdex: SKOS utilities via jruby
I just announced this on the public-esw-thes and public-rdf-ruby lists. I started to make a Ruby API for SKOS.
Example code snippet from the readme.txt (see that link for the corresponding output):
require “src/jena_skos”
s1 = SKOS.new(“http://norman.walsh.name/knows/taxonomy”)
s1.read(“http://www.wasab.dk/morten/blog/archives/author/mortenf/skos.rdf” )
s1.read(“file:samples/archives.rdf”)
s1.concepts.each_pair do |url,c|
puts “SKOS: #{url} label: #{c.prefLabel}”
end
c1 = s1.concepts["http://www.ukat.org.uk/thesaurus/concept/1366"] # Agronomy
puts “test concept is “+ c1 + ” ” [...]
Also posted in Project ideas, SKOS, Semantic Web, Technology, coding, foaf4lib, ggg, ruby, swig Leave a comment
Mozilla Ubiquity
The are some interesting things going on at Mozilla Labs. Yesterday, Ubiquity was all over the mailing lists. You can think of it as “what the Humanized folks did next”, or as a commandline for the Web, or as a Webbier sibling to QuickSilver, the MacOSX utility. I prefer to think of it as the [...]
Visual SPARQL query tools
Quick links – thinking about tools that allow graphical SPARQL query authoring…
OpenLink Virtuoso: InteractiveSparqlQueryBuilder (in HTML/CSS/.js). Pictured below; extensive documentation and screenshots linked from their main page.
…an ancestor of which was Damian Steer’s RDFAuthor tool for MacOSX, which could generate Squish (a SPARQL precursor) and query services over the ‘array of hashtables’ SOAP-for-rdf-query non spec [...]
Also posted in Semantic Web, ggg, swig Tagged damiansteer, History, html, jsonu, maryland, openlink, parka, query, shoe, SPARQL, virtuoso, visual query 3 Comments
Foundation Nation: new orgs for Infocards, Symbian
Via the [IP] list, I read that the Information Card Foundation has launched.
Information Cards are the new way to control your personal data and identity on the web.
The Information Card Foundation is a group of thoughtful designers, architects, and companies who want to make the digital world easier for you by building better products that [...]
Also posted in FOAF, RDF, Technology, openid Tagged nokia symbian infocard foundations Leave a comment
Semantic Web Austin
Another day, another local Semantic Web group. This time in Austin, Texas…
Via former ILRT colleague Joel Crisp, I just stumbled on their Facebook group. Hope they don’t kick me out when they find out I’m not from around there. Seems a Web site may be coming soon too. For those inside Hotel Facebook, I just [...]
Also posted in Semantic Web, Technology, swig Leave a comment
Map-reduce-merge and Hadoop/Hbase RDF
Just found this interesting presentation,
Map-Reduce-Merge: Simpli?ed Relational Data Processing on Large Clusters
by Hung-chih Yang, Ali Dasdan Ruey-Lung Hsiao, D. Stott Parker; as presented by Nate Rober (PDF)
Excerpts:
Extending MapReduce
1. Change to reduce phase
2. Merge phase
3. Additional user-de?nable operations
a. partition selector
b. processor
c. merger
d. con?gurable iterators
Implementing Relational Algebra Operations
1. Projection
2. Aggregation
3. Selection
4. Set Operations: Union, Intersection, Difference
5. [...]
Also posted in Project ideas, RDF, Semantic Web, ggg Leave a comment