http://www.subjectcentric.com What if every subject that we think about can have explicit representation in our computers? en-us Resource-Oriented Architecture Oracle (Corporation) RDF OWL Yahoo! Franz Inc Ontos AG Douglas Lenat Cyc PSI 2008 SemTech Conference I am back from "Semantic Technology Conference":http://www.semantic-conference.com. It is becoming bigger and bigger each year. This year there were more than hundred sessions, full day of tutorials, product exhibition. It was quite crowded and energizing. Sat, 24 May 2008 16:54:00 -0400 http://www.subjectcentric.com/post/2008_Semantic_Technology_Conference_random_observations http://www.subjectcentric.com/post/2008_Semantic_Technology_Conference_random_observations Subject-centric computing Resource-Oriented Architecture CTM Topic Maps Steve Vinoski published a very interesting article: "Serendipitous reuse":http://steve.vinoski.net/pdf/IEEE-Serendipitous_Reuse.pdf. He also provided additional comments in "his blog":http://steve.vinoski.net/blog/2008/01/05/serendipitous-reuse. 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). Fri, 11 Apr 2008 19:14:00 -0400 http://www.subjectcentric.com/post/Serendipitous_reuse_and_representations_with_basic_ontological_commitments http://www.subjectcentric.com/post/Serendipitous_reuse_and_representations_with_basic_ontological_commitments Subject-centric computing Topic Maps I did a presentation and tutorial at "Topic Maps 2008":http://www.topicmaps.com/tmc/conference.jsp?conf=TM2008. Tue, 08 Apr 2008 21:45:00 -0400 http://www.subjectcentric.com/post/Slides_from_Topic_ Maps_2008 http://www.subjectcentric.com/post/Slides_from_Topic_ Maps_2008 CTM Ruby (programming language) Topic Maps Domain Specific Language 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). Thu, 28 Feb 2008 21:47:00 -0500 http://www.subjectcentric.com/post/Authoring_topic_maps_using_Ruby_based_DSL_CTM_the_way_I_like_it http://www.subjectcentric.com/post/Authoring_topic_maps_using_Ruby_based_DSL_CTM_the_way_I_like_it XTM Topic Maps 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":http://www.ontopedia.net/omnigator/models/topic_nontopoly.jsp?tm=subject-centric.xtm&id=id_d13864244f388d31a24c79ad3f1603dd in "Omnigator":http://www.ontopia.net/omnigator (Topic Maps browser). Sat, 19 Jan 2008 13:16:00 -0500 http://www.subjectcentric.com/post/Subject-centric_blog_in_XTM_Topic_Maps_interchange_format http://www.subjectcentric.com/post/Subject-centric_blog_in_XTM_Topic_Maps_interchange_format Subject-centric computing Robotics I was in Kyoto for three days in December. Osaka-Kobe-Kyoto is a region with high concentration of companies involved in robotics. I cannot stop thinking about robotics and Subject-centric computing after this trip. Traditionally, when we talk about Subject-centric computing (SCC) and Topic Maps (as enabling technology), we assume more or less slowly evolving models. In the world of robotics, models are evolving in real time. Mon, 24 Dec 2007 20:32:00 -0500 http://www.subjectcentric.com/post/Subject-centric_computing_and_robotics_Osaka_will_soon_be_known_as_the_capital_of_the_robotics_world http://www.subjectcentric.com/post/Subject-centric_computing_and_robotics_Osaka_will_soon_be_known_as_the_capital_of_the_robotics_world Subject-centric computing Resource-Oriented Architecture RESTful Web Services Service-oriented architecture (SOA) If we look at traditional SOA, business transactions are modeled typically as service operations that are part of a service contract. Operation invocations in traditional SOA are not treated as first class "objects". Operation invocations do not have own identity. Components/processes inside of a service and service clients cannot reference individual operation calls. Situation is different if we look at subject-centric and RESTFul services. Sat, 24 Nov 2007 15:37:00 -0500 http://www.subjectcentric.com/post/Resource-Oriented_Architecture_and_Subject-centric_computing_vs_traditional_SOA_modeling_business_transactions http://www.subjectcentric.com/post/Resource-Oriented_Architecture_and_Subject-centric_computing_vs_traditional_SOA_modeling_business_transactions Subject-centric computing Multi-touch interaction iPhone iPod touch If you follow news related to HCI (human-computer interaction), then you probably saw multi-touch interaction demonstrations by Jeff Han. You probably already use (or played) with iPhone or iPod touch. So you know what multi-touch interaction is about. This kind of interface goes hand in hand with Subject-centric computing. Why? Mon, 19 Nov 2007 20:11:00 -0500 http://www.subjectcentric.com/post/Multi-touch_interaction_iPhone_and_Subject-centric_computing http://www.subjectcentric.com/post/Multi-touch_interaction_iPhone_and_Subject-centric_computing Subject-centric computing Ruby (programming language) OS X Leopard I upgraded one of my Mac-based systems with OS X Leopard. It is great. I like it. But from the subject-centric perspective it is still more or less a traditional application/document-centric OS. How can we make it more subject-centric? Sat, 03 Nov 2007 15:10:00 -0400 http://www.subjectcentric.com/post/OS_X_Leopard_and_subject-centric_computing http://www.subjectcentric.com/post/OS_X_Leopard_and_subject-centric_computing TMCL TMQL CTM Ruby (programming language) I did a short presentation (3 slides) about requirements for a new subject-centric programming language on TMRA 2007. I made a reference to COBOL as a language that had built-in high-level support for defining and manipulating "business data". Many modern programming languages "outsourced" data handling to relational databases and lost transparency and simplicity in manipulation of data. Tue, 23 Oct 2007 23:29:00 -0400 http://www.subjectcentric.com/post/Subject-centric_programming_language_or_what_was_good_about_COBOL http://www.subjectcentric.com/post/Subject-centric_programming_language_or_what_was_good_about_COBOL ISO 13250 Subject-centric computing XTM Resource-Oriented Architecture RESTful Web Services I just finished reading RESTful Web Services. It is an amazing book and I think it will play a very important role in defining main principles of the next generation of the Web. The authors of the book introduce the Resource-Oriented Architecture (ROA) as an architecture for building the resource-centric programmable Web. "Resource" is a fundamental concept in this architecture. Sat, 11 Aug 2007 19:01:00 -0400 http://www.subjectcentric.com/post/Resource-oriented_architecture_and_Subject-centric_computing_what_is_the_difference http://www.subjectcentric.com/post/Resource-oriented_architecture_and_Subject-centric_computing_what_is_the_difference Subject-centric computing Representation of "real life" objects and direct object manipulation were fundamental ideas during early days of personal computers. Unfortunately, over the years these ideas have been forgotten in the mainstream of computing. Not entirely, of course. We have GUI, object oriented programming. Sat, 09 Jun 2007 22:26:00 -0400 http://www.subjectcentric.com/post/About_Subject-centric http://www.subjectcentric.com/post/About_Subject-centric