Showing posts with label w3c. Show all posts
Showing posts with label w3c. Show all posts

Wednesday, September 24, 2008

W3C-Day, Berlin, 2008 (at XInnovations 2008)

Today, I'm going to visit the annual W3C-Day being connected with the XInnovations 2008 in Berlin. According to the program the sessions were supposed to start at 9 am (For this reason I got up rather early thismorning....) but also the first speaker seemd to think that 9 am is a little bit early ;-) So we started with a 20 minutes delay. In the introducing talk, Klaus Birkenbihl from W3C Semantic Web Activity Group is giving an introductory talk on the Semantic Web, solving the question, how to explain Semantic Web to an (more or less' ordinary web user. Not a simple task, but the best you can do ist to explain it via examples, showing that integrating information in the web today is a rather tedious and extensive manual work. Of course, with semantic web technologies, automated integration of heterogeneous data might soon be possible...

Unfortunately, the speaker for the second talk did not show up. Moreover, it should have been a presentation about the semantic search engine ConWeaver, which I know very well and I was rather curious about its progress. Therefore, the session continues with some kind of RDF tutorial being presented by Lars Bröker from Fraunhofer IAIS. Next, a short introduction in SPARQL is given by Thomas Tikwinski from Fraunhofer IAIS und W3C DE/AT.

[to be continued]

Wednesday, March 28, 2007

The State of the Semantic Web


In the DERI blog I have found a rather interesting presentation from Ivan Herman, (W3C) Semantic Web Activity Leader, about the current state of the semantic web, given at the International Conference on Semantic Web & Digital Libraries in Bangalore, India.

He also gives some insight in what has been achieved concerning language standardization (RDF, OWL, SPARQL, etc.), already existing vocabularies, current implementations and available knowledge databases (ontologies).

Besides all the achievments of the recent years, Ivan also points out where the deficiencies are:

  • how to bind to different communities (e.g., the “digital library world”)

  • how (and where from) to get RDF data

  • several stil missing functionalitiessuch as rules, “light” ontologies, fuzzy reasoning, necessity to review RDF and OWL,…

  • different misconceptions, existing messaging problems

  • and of course the need for more applications, more deployment, and also acceptance


To get more working applications the porting of alreay existing knowledge resources (as already existing classification schemes, lexicons, htesauri, etc.) into the context of the semantic web is mandatory. SKOS (Simple Knowledge Organization System) is one of the W3C activities that has exactely this purpose. SKOS is built on top of RDF and serves as a formal language for representing structured well defined vocabularies.