My GraphRAG Curator interview
Discussing graphs, RAG, GraphRAG, music...
Let's stop saying 'semantic web'
Like a startup pivot, the technology turned out to be great for things other than a new kind of 'web'.
“Semantic web technology” refers to technology designed to create something that never got created. That’s OK. Lots of great things were and continue to be created.
Correcting some outdated "Learning SPARQL" examples
Revising some queries to accommodate revised data.
O’Reilly books such as Learning SPARQL have an errata page where anyone can submit corrections for the book, and I appreciate all entries. Some are just basic typo misspellings, which is embarrassing. Some are examples that no longer work because a certain SPARQL endpoint is no longer up or, in several cases, because DBpedia entries got revised to describe resources using different properties than they did when the book was published.
ChatGPT and Copilot as OWL processors
Pretty impressive.
Converting RDFS schemas to SHACL constraints
With SPARQL, of course.
(This may look like a long blog entry, but it’s mostly sample schemas, data, and shapes. It should be a quick read.)
Filtering foreign literals out of SPARQL query results
And only the foreign literals.
It’s easy enough for a SPARQL query to specify that you only want literal values that are tagged with a particular spoken language such as English or French. I had a more complex condition to express recently that has happened to me fairly often: how do I retrieve all the data for a particular resource except the literals tagged in a foreign language? I want all the triples with object property values, and I want all the ones with literal values, regardless of type, unless they are tagged…
Parsing JSON with Python
My personal quick reference
It seems like every few months I have a project where I need to parse some JSON and pull out certain parts. Maybe the JSON came in JSON files, or maybe I retrieved it from an API. The duration between each of these occasions is long enough that I’ve had to relearn some basics each time, so a year or two ago I made a sample JSON file that demonstrates a few data structures and features, and then I wrote a Python demo script that parses them. Now I look at that script to review the basics…
Amazon's failed folksonomy and Kevin Federline
What could go wrong?
A few years ago I wrote about some metadata that was 4,000 years old. Today I wanted to write about another high point in the history of metadata — well, some sort of point: the failure of Amazon’s folksonomy and the Playing with Fire album by Kevin Federline, the former Mr. Britney Spears. Throughout this discussion I’ll show some of the tags that Amazon users added to this album, and I’ll also provide a link to a page where you can see the top 100 entries. (As you’ll…
