rdf http://stephen.evanchik.com/taxonomy/term/12/atom/feed 2006-12-14T11:14:34-08:00 Released ODO 0.20 http://stephen.evanchik.com/blog/2007/01/released-odo-020.html 2007-01-29T08:23:34-08:00 2007-01-29T08:23:34-08:00 Stephen Evanchik Late last week I released ODO 0.20 which has some important updates:

  • Jena Database compatibility layer

It is now possible to connect to and read/write databases created with HP Lab’s Jena . The code is still experimental but provides a good starting point for feedback. There are test cases in this release so regression testing and bug demonstration should be easy.

  • RDFS code generator.

Ontologies and more specifically the RDFS code generator have been updated and bug tested. The version in the first release was a port of older code that didn’t translate perfectly in to the new ODO framework. I am happy to report that the code is now used to host the ODO-Jena compatibility layer and there are now test cases for it as well.

]]> Late last week I released ODO 0.20 which has some important updates:

  • Jena Database compatibility layer

It is now possible to connect to and read/write databases created with HP Lab’s Jena . The code is still experimental but provides a good starting point for feedback. There are test cases in this release so regression testing and bug demonstration should be easy.

  • RDFS code generator.

Ontologies and more specifically the RDFS code generator have been updated and bug tested. The version in the first release was a port of older code that didn’t translate perfectly in to the new ODO framework. I am happy to report that the code is now used to host the ODO-Jena compatibility layer and there are now test cases for it as well.

  • N3 RDF parser.

This release includes an initial version of an N3 RDF parser. It isn’t complete because I don’t have a test suite to make sure it accepts valid N3. Hopefully with each release this component will mature.

  • OWL-Lite code generator is still in development.

A casualty of the debugging / testing of the RDFS code generator this system still needs to be updated and tested with the new Ontology “layer.”

  • Many more bug fixes and test cases.
]]> ODO - Ontologies, Databases, and Optimizations http://stephen.evanchik.com/blog/2006/12/odo-ontologies-databases-and-optimizations.html 2006-12-14T10:58:22-08:00 2006-12-14T11:14:34-08:00 Stephen Evanchik I have been working at IBM for the past couple years on a project called the IBM Semantic Layered Research Platform . The project is a collection of software components that provide support for semantics through the entire application-middleware stack.

We released the source code for the entire project in November under the Eclipse Public License .

My part of the project originates from my work on the LSID project. I had been working with a lot of RDF metadata while maintaining the Perl LSID development stack and realized that (back in early 2004) that a clean, useful and relatively bug free RDF framework didn’t exist. It turns out that a number of people shared my concerns and were independently creating their own ad hoc Perl libaries for RDF processing.

]]> I have been working at IBM for the past couple years on a project called the IBM Semantic Layered Research Platform . The project is a collection of software components that provide support for semantics through the entire application-middleware stack.

We released the source code for the entire project in November under the Eclipse Public License .

My part of the project originates from my work on the LSID project. I had been working with a lot of RDF metadata while maintaining the Perl LSID development stack and realized that (back in early 2004) that a clean, useful and relatively bug free RDF framework didn’t exist. It turns out that a number of people shared my concerns and were independently creating their own ad hoc Perl libaries for RDF processing.

I started to collect my various RDF manipulating Perl scripts from my LSID work and began to organize them in to a framework that I called ODO . ODO is an acronym for “Ontologies, Databases, and Optimizations,” which are the three items I was most interested in experimenting with at the time. They were also the three categories of functionality I couldn’t find in the existing Perl RDF libraries.

ODO is still evolving and I have some more features to push out but right now it supports:

  • Nodes, statements and graph backed by memory
  • RDFS and OWL-Lite to Perl code generators
  • Queries using RDQL with SPARQL on its way
  • RDF/XML and NTriple parsers

Each of these items is built inside the ODO framework so it is possible to extend and enhance the library over time without breaking applications (hopefully!).

I have some more components of the library to push out over the next few weeks. I am in the process of making the POD available on the IBM Semantic Layered Research Platform web site and will write some demo applications soon!

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