My name is Richard Cyganiak.
I'm a software engineer at TopQuadrant. I work on web technologies for managing data and am based in Dublin, Ireland.
Category Archives: Semantic Web
This is a technical post on the way URIs break down into “namespace parts” and “local parts” in RDF. It was prompted by this comment in a recent discussion: In a URI, the namespace part ends with the last slash … Continue reading
Let’s pretend we live in January 2013, and RDF 1.1 has just been published. This including the RDF Working Group’s attempt to clean up string literals. The issue with string literals is that RDF currently offers three different ways for … Continue reading
prefix.cc is a website I’ve made last February to ease a very common task in the life of RDF developers and SPARQL users: looking up namespace URIs. A short summary of what the site can do for you is available … Continue reading
So I wrote a rather angry private email to Erik Wilde a few days ago, complaining about his use of the term “linked data” for a site that doesn’t follow the linked data practices. Erik decided to publish my email … Continue reading
Update: Evan Sandhaus reports that all the issues mentioned below will be fixed. Great! Yesterday at the International Semantic Web Conference, Evan Sandhaus of the New York Times unveiled data.nytimes.com, a site that publishes linked data for some parts of … Continue reading
The European Semantic Web Conference is over and I’m back in Galway. It was a lot of fun, two hundred smart and interesting people in a sea-side tourist resort, and the thought “I can’t believe I’m getting paid for this” … Continue reading
I was debugging some content negotiation related issue the other day and made a little tool that allows me to find out what Accept header different RDF-aware HTTP clients send. If you ever need to know the Accept header of … Continue reading
In my podcasted chat with Danny Ayers the other day I said that Tabulator doesn’t support N3, the highly readable RDF serialization syntax developed by Tim Berners-Lee. It turns out I was wrong. I thought Tabulator supported RDF/XML only. But … Continue reading
Bernard Vatant: A challenge for semantic query wizzards: Find the smallest connected graph having at least a node in each LOD data set Interesting. The hardest part might be finding paths through the FOAF bubble. Any takers?