Link roundup before rebooting
By bblfish on Dec 16, 2008
The time has come for an OS upgrade to OSX 10.5.6, and as Firefox 3.1 beta 2 has kept up very well for a long time, I now have a huge number of tabs open. So here are some worth reporting on here, the rest are on my delicious feed.
I started looking into cloud computing and the semantic web and found a few really nice links:
- Virtuoso cloud edition for Amazon's EC2 from OpenLink Software the company powering DBPedia and many of the Linked Data Cloud servers.
- a new highly scalable java based semantic web database named Big Data which was presented at O'Reilly conference earlier this year (PDF of presentation). From their web site:
Bigdata(R) is an open-source scale-out storage and computing fabric supporting optional transactions, very high concurrency, and very high aggregate IO rates. Bigdata was designed from the ground up as a distributed database architecture optimized for very high aggregate IO rates running over clusters of 100s to 1000s of machines, but can also run in a single-server mode. Bigdata offers a distributed file system, similar to the Google File System but also useful for workflow queues, a data extensible sparse row store, similar to Googles widely recognized bigtable project, and map/reduce processing for parallelizing data intensive workflows over a cluster.
Bigdata(R) comes packaged with a very high-performance RDF store supporting RDF(S) and OWL Lite inference.[...]The Bigdata RDF Store was designed specifically to meet requirements for very large scale semantic alignment and federation.
- article by RedMonk on 15 ways to tell it's not cloud computing
- The semantic grid project probably has some very good resources on cloud computing, so I should look there next.
I am sure there is more on that subject of cloud computing but that's what I have for now.
On social networks
- Alka Gupta of Sun is wishing for open distributed social networks. Welcome Alka, all the tools, data formats, and more are here :-)
- An very nice web2.0 demo by deeda of an interface on social networks, people's location and how one can buy them some presents. Clearly they need distributed social networks if they are not just to become another facebook app.
- a python implementation of foaf+ssl with source code
- Paper on Formalizing XACML Using Defeasible Description Logics. This is being blogged about by Clark and Parsia under the tag policy-management. For some good intro to Description Logics notation on which OWL is based see the excellent book The Description Logics Handbook available in parts online. Of course an XACML tutorial is also helpful here.
For a bit of stimulation go look at Microsoft's rdf api.