## You probably don't need OWL

And if you do there's a simple way to prove it.

## Taxonomy management with SKOS

Republishing an IBM developer works article.

In 2011, IBM developerWorks published an article that I wrote titled “Improve your taxonomy management using the W3C SKOS standard.” (They have always loved those “Get Better at This Thing” titles.) Several years later they took it (and a ton of other developerWorks content) down. I have republished it here as background for recent discussions about when OWL is appropriate to use and when it isn’t; more on that next month. I didn’t change anything but added a…

## What else can I do with RDFS?

Schemas can be a little fancier and even more useful with no need for OWL.

## What is RDFS?

And how much can a simple schema do for you?

## What is RDF?

What can this simple standardized model do for you?

## Calling your own JavaScript functions from SPARQL queries

More Jena arq fun.

## Hidden gems included with Jena’s command line utilities

Lots of ways to manipulate your RDF from the open-source multiplatform tool kit

On page 5 of my book Learning SPARQL I described how the open source RDF processing framework Apache Jena includes command line utilities called arq and sparql that let you run SPARQL queries with a simple command line like this:

## Pulling Turtle RDF triples from the Google Knowledge Graph

Even querying by type!

When I wrote about my first deep dive into Knowledge Graphs, I mentioned that although the term was around well before 2012, the idea of a Knowledge Graph was blessed as an official Google thing that year when one of their engineering SVPs published the article Introducing the Knowledge Graph: things, not strings. This blessing gave some focus to many members of the graph database community because they could say that what they had been doing was similar, if not the same, as what Google was…