News and Updates on the KRR Group
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protege logo +Apache Jena + YASGUI

 

This year we again have a nice group of students (almost 70) following the 3rd year bachelor Semantic Web course. Until this year it was quite a hassle to combine the bits and pieces to create a complete workflow starting from ontology creation (in Protégé) to having a nice SPARQL endpoint that reasons in OWL over the ontology+instances.

Like the previous years, the instructors (Stefan Schlobach and Ronald Siebes) updated the assignment by the latest developments regarding available toolkits and software.  We were surprised that it was very easy to integrate these latest tools and are now able to do the following within 30 minutes on any machine:

- create a simple ontology in Protégé

- install a sparql endpoint with OWL reasoning (Jena-Fuseki)

- import the ontology

- connect this local endpoint with Yasgui (http://yasgui.laurensrietveld.nl)

- do via Yasgui a federated query combining results from our local endpoint together with results from other endpoints (e.g. DBPedia)

Conclusion: it is now in reach of many people to get, without a lot of suffering, a nice Semantic Web infrastructure up-and-running, and connect it with the vast amount of external Linked-data from various endpoints.

The Semantic Web works!

Here you can find a manual to do this yourself and hopefully share the conclusion.

 

Source: Semantic Web world for you
Yesterday I was sitting in a very interesting meeting with some experts in data visualisation. There was a lot of impressive things presented and the name of Wii remote and Kinect were mentioned a couple of time. As I observed so far, these devices are used as cheap way to get sensors. And they certainly […]

Source: Semantic Web world for you
Yesterday I was sitting in a very interesting meeting with some experts in data visualisation. There was a lot of impressive things presented and the name of Wii remote and Kinect were mentioned a couple of time. As I observed so far, these devices are used as cheap way to get sensors. And they certainly […]

Source: Data2Semantics

Paul Groth co-authored an article about altmetrics in the Elsevier Library Connect newsletter for librarians. The newsletter reaches 18,000 librarians in 138 countries around the world.

Academic research and publishing have transitioned from paper to online platforms, and that migration has continued to evolve from closed platforms to connected networks. With this evolution, there is growing interest in the academic community in how we might measure scholarly activity online beyond formal citation.

See more at: http://bit.ly/19bEVpD

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Source: Data2Semantics

As a complement to two papers that we will present at the ECML/PKDD 2013 conference in Prague in September we created a webpage with additional material.

The first paper: “A Fast Approximation of the Weisfeiler-Lehman Graph Kernel for RDF Data” was accepted into the main conference and the second paper: “A Fast and Simple Graph Kernel for RDF” was accepted at the DMoLD workshop.

We include links to the papers, to the software and to the datasets used in the experiments, which are stored in figshare. Furthermore, we explain how to rerun the experiments from the papers using a precompiled JAR file, to make the effort required as minimal as possible.

Source: Semantic Web world for you
One visiting the Netherlands will inevitably stumble upon some “BakFiets” in the streets. This Dutch speciality that seems to be the result from cross-breeding a pick-up with a bike can be used from many things from getting the kids around to moving a fridge. Now, let’s consider a Dutch bike shop that sells some Bakfiets […]

Source: Semantic Web world for you
One visiting the Netherlands will inevitably stumble upon some “BakFiets” in the streets. This Dutch speciality that seems to be the result from cross-breeding a pick-up with a bike can be used from many things from getting the kids around to moving a fridge. Now, let’s consider a Dutch bike shop that sells some Bakfiets […]

Source: Semantic Web world for you
Yesterday was the closing event of the Pilot Linked Open Data project. A significantly big crowd of politicians, civil servants, hackers, SME owners, open data activists and researchers gathered in the very nice building of the RCE in Amersfoort to hear about what has been done within this one year project lead by Erwin Folmer. […]

Source: Semantic Web world for you
Yesterday was the closing event of the Pilot Linked Open Data project. A significantly big crowd of politicians, civil servants, hackers, SME owners, open data activists and researchers gathered in the very nice building of the RCE in Amersfoort to hear about what has been done within this one year project lead by Erwin Folmer. […]

Source: Data2Semantics

This june 10 and 11, the Data2Semantics team locked itself in a room in the Amsterdam Public Library to build a first version of the Data2Semantics Golden Demo: a pipeline for publishing enriched data (‘semantics’) directly from Dropbox to Figshare, integrated in the Linkitup webservice.

In two days, we built and integrated:

Watch the video!

 

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