It cannot be denied that Stephen Wolfram knows data. As the person behind Mathematica and Wolfram|Alpha, he has been working with data — and the computation of that data — for a long time. As he said in his blog yesterday, “In building Wolfram|Alpha, we’ve absorbed an immense amount of data, across a huge number of domains. But—perhaps surprisingly—almost none of it has come in any direct way from the visible internet. Instead, it’s mostly from a complicated patchwork of data files and feeds and database dumps.”
The main topic of Wolfram’s post is a proposal about the form and placement of raw data on the internet. In the post, he proposes that .data be created as a new generic Top-Level Domain (gTLD) to hold data in a “parallel construct.”
Today, schema.org spokesperson Dan Brickley posted that “we’re pleased to give advance notice of a new way of adopting schema.org’s structured data vocabulary. W3C’s RDF Web Applications group are right now putting the finishing touches to the latest version of the RDFa standard. This work opens up new possibilities also for developers who intend to work with schema.org data using RDF-based tools and Linked Data, and defines a simplified publisher-friendly ‘Lite’ view of RDFa.”
Day 5 of ISWC 2011 was the third full day and last day of the conference. It started with a keynote from Gerhard Weikum title “For a few more triples“. The rest of the day consisted of sessions on Outrageous Ideas, Social Web, In-Use: Content Management, Ontology Evaluation, Ontology Matching and Mapping, User Interaction and In Use: Applications. The highlight of the day was the Closing Ceremony, where the winners of several prizes were announced.
Day 4 of ISWC 2011 was the second full day of the conference and started out with a keynote from Frank van Harmelen, titled “10 Years of Semantic Web: does it work in theory?“ There were several sessions on RDF Querying of Multiple Sources, RDF Data Analysis, Formal Ontology & Patterns, Knowledge Representation Semantics, Web of Data, MANCHustifications and Provenance, the In Use track on Environmental data, the Semantic Web Challenge and a very exciting Deathmatch panel.
The main question addressed in the keynote was if a decade of Semantic Web work has helped to discover any Computer Science laws? Frank stated that what has been built in the past 10 years can be characterized in 3 parts:
[Editor's Note: This week, Juan Sequeda is reporting in from the International Semantic Web Conference in Bonn, Germany]
The Semantic Web Death Match: Industry vs Academica vs Standards at ISWC this week consisted of 5 panelists and Jim Hendler as the moderator. Each panelist summarized their point of view in a short phrase:
- Martin Hepp (Don’t shoot the messenger: the Fall of Constantinople)
- Michael Hausenblas (Now we have the basement, let’s go for the floors and the roof!)
- Chris Welty (Standards aren’t bad, just misunderstood)
- Ivan Herman (Did We forget about the client-side web applications’ world?)
- Ian Horrocks (Maybe the Web is the wrong application…)
Day 3 was the first full conference day. The past two days were dedicated only to tutorials and workshops on more specific topics. This year, ISWC turns 10 years old and they showed a tag cloud of the abstracts submitted in 2001 versus the tag cloud of the abstracts submitted this year. Not surprising, the word “data” appears much larger, the word “ontology” has maintained its size, the word “web” has almost disappeared while the word “query” appears now and barely appeared 10 years ago.
(tag cloud image after the jump)
Day 1 | Day 2 | Day 3 | Day 4 | Day 5 ]
Day 2 of ISWC consisted of 7 workshops and 3 tutorials. One of the most popular workshops was the Ontology Matching, which seems to be evolving to not only matching ontologies but also to matching instances, due to the rise of Linked Data. The Scalable Semantic Web Knowledge Base Systems presented several works on RDF and NoSQL databases, such like cumulusRDF.