Related posts:

• Watching an interview about Powerset

  InfoQ published an interview with Tom Preston-Werner on Powerset, GitHub, Ruby and Erlang. I really like projects that try to analyze text/resources on the web and try to implement “smart search”. Powerset is one of these projects. But what I like even more is the approach when we explicitly represent facts/information items using open knowledge representation standards such as Topic Maps or RDF.

• Extending Ontopedia PSI server to handle PURLs: support for RDF, step one

  I have been thinking about RDF support on Ontopedia PSI server for quite some time. Semantic Technology Conference that I attended this spring gave me some new ideas in this direction. I decided to follow recommendations from Eric Miller’s and David Wood’s presentation “Persistent Identifiers for the ‘Real Web’” regarding PURLs (Persistent Uniform Resource Locators). Ontopedia PSI server was extended to handle PURLs

• The new version of Ontopedia PSI server

  The new version of Ontopedia PSI server is out now. It is possible to represent various types of assertions related to subjects (names, occurrences, associations). The new PSI server allows also to record and integrate opinions of different users. Its internal knowledge representation is optimized for paraconsistent reasoning

• Serendipitous reuse and representations with basic ontological commitments

  Steve Vinoski published a very interesting article: Serendipitous reuse. He also provided additional comments in his blog. The author explores benefits of RESTful uniform interfaces based on HTTP “verbs” GET, PUT, POST and DELETE for building expansible distributed systems. He also compares RESTful approach with traditional SOA implementations based on strongly typed operation-centric interfaces.

  Serendipitous reuse is one of the main goals of Subject-centric computing. In addition to uniform interfaces, Subject-centric computing promotes usage of uniform representations with basic ontological commitments (as one of the possible representations).

• Slides from Topic Maps 2008

  I did a presentation and tutorial at Topic Maps 2008.

• Authoring topic maps using Ruby-based DSL: CTM, the way I like it

  Designing and using Domain Specific Languages (DSL) is a popular programming style in Ruby community. I am experimenting with Ruby-based DSL for authoring topic maps. Surprisingly, the result is very close to my view on the “ideal” CTM (Compact Topic Maps syntax).

• Subject-centric blog in XTM (Topic Maps interchange) format

  XTM export has been available on Subject-centric blog from the first day. But, I think, it was not obvious what readers can do with it. I added a link to Subject-centric topic map in Omnigator (Topic Maps browser).