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Driving Hadoop data integration with standards-based models instead of code (2015-02-15) RDFS models!

R (and SPARQL), part 2 (2015-01-22) Retrieve data from a SPARQL endpoint, graph it and more, then automate it.

R (and SPARQL), part 1 (2015-01-20) Or, R for RDF people.

Hadoop (2014-12-13) What it is and how people use it: my own summary.

Querying aggregated Walmart and BestBuy data with SPARQL (2014-11-09) From structured data in their web pages!

shameless plugs (buy my books)

Latest: Learning SPARQL from O'Reilly.

XSLT Quickly from Manning Publications.

XML: The Annotated Specification from Prentice Hall. The definitive reference on the most important XML document of them all: the official XML Specification.

free "books"

Free epub children's picture books These were developed with the OLPC XO laptop in mind, but any epub-compliant eBook reader will read them.

Logo for Kids I was thinking about writing an introduction to programming for middle school kids using the Logo programming language. After writing about 90 pages and deciding not to pursue it, I've made an Acrobat file of what I did do available for anyone who can use it.

Operating Systems Handbook Wouldn't "Working knowledge of UNIX, VMS, OS/400, VM/CMS, and MVS" look great on your resume? Formerly a $49.50 hardcover from McGraw-Hill; now a set of Acrobat files free for you to download!


Why A directory of publicly available collections of RDF and web services that return RDF.

XSLT 2.0 articles: has a complete list of my Transforming XML columns about XSLT; for people interested in learning about XSLT 2.0, I've created a separate list showing just the articles covering the new features and other issues.

Microdata tests: Potrzebie Moses Schliessen Fangio