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> Home > Technology > Beer > Personal RSS XTM > The author . > On Twitter Archive2008-10 - 2008-05 Technology blogs
Robert Barta |
Meeting on ontology modellingToday there was another meeting of the Topic Maps Users' Group on ontology modelling in Topic Maps. ... Read | 2006-09-26 20:50 | 2 comment(s) Teaching Topic Maps in BeijingAs I wrote in an earlier posting I was in Beijing to teach Topic Maps to the developers of a Chinese start-up. The details of their product are secret right now, but the experience of teaching Topic Maps in this environment is quite unique. This posting has been sitting around unpublished for a long time, and I just stumbled over it now, but decided to publish it. ... Read | 2006-08-20 23:51 | 0 comment(s) Equivalence classesI've been doing some thinking about identity lately, but to explain myself I need to first get across the concept of an equivalence class. Equivalence classes for me are one of the wonders of modern mathemathics, in the sense that it's a concept that's brilliantly simple, obvious, and elegant, and at the same time incredibly useful. ... Read | 2006-08-17 21:23 | 6 comment(s) Norwegian Topic Maps Users' Group MeetingThe Norwegian Topic Maps Users' Group had one of its irregular meetings tonight, with talks on various subjects, plus updates on the administrivia of the users' group itself. It was of course followed by beer and socializing at a local bar. ... Read | 2006-08-16 21:43 | 3 comment(s) A quick introduction to CXTMI got some questions about how CXTM actually works, so I thought I'd put together a little introduction to it. If you want to create a CXTM file for one of your own topic maps you can actually do this in Omnigator with the export plug-in. ... Read | 2006-08-04 22:27 | 0 comment(s) An XTM conformance test suiteOne thing that's really needed is a conformance test suite for XTM 2.0, which can be used by implementors to verify that they've actually gotten their implementations right. Of course, it could also be used by customers to verify that the implementation they are thinking of buying actually conforms to the standard. This is becoming more important as the hype around Topic Maps grows, and vendors start claiming they support Topic Maps without even knowing what it is. ... Read | 2006-08-02 19:24 | 2 comment(s) How to write a TM/XML deserializerThe TM/XML syntax is easy to understand for humans, and easy to process with XSLT, but seeing how to write a TM/XML deserializer is not trivial from the spec. However, once you know how to do it it's actually quite straightforward, so I thought I'd document the approach that I took here in case anyone else wants to have a go at this. ... Read | 2006-08-02 16:56 | 2 comment(s) TMRA'06 program publishedThe program for TMRA'06 has now been officially published. This year we have 32 talks, up from 24 last year, and I think this year's program is substantially stronger than last year's. It's interesting to note that quite a few of last year's open space entrants reappear this year as full-blown presentations. This year there is also a day of tutorials, so the conference is definitely grown compared to last year. ... Read | 2006-07-28 14:54 | 0 comment(s) The job is doneYesterday we sent the completed draft of TMDM to ISO for publication as an International Standard. This means that the first part of the new Topic Maps standard is finally completed, finished, finalized, and ready. A few months from now (not sure how many), you'll be able to go the online ISO store and buy either a PDF version of the standard or a paper one. For those who don't want to, a free version is on isotopicmaps.org. So, implementors, go ye forth and implement! ... Read | 2006-07-19 11:51 | 2 comment(s) NULL in Topic MapsOne point on which Topic Maps differ from most other information representations is the handling of unknown or missing information. In relational databases these are represented using the special NULL value, and the same is the case in object-oriented programming. In XML there are different ways to approach this issue, one of which is the xsi:nil attribute. ... Read | 2006-07-08 19:42 | 5 comment(s) |
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