Der Treff mit Tiefgang für junge Erwachsene in Kaiserslautern.

An unserem ersten Treffen ist geplant

• powerpoint karaoke
• Musik
• Gespräch bei Snacks und Drinks

Wann? 20.3.2007 19:30
Wo? Freie Evangelische Gemeinde Kaiserslautern, Pariser Str 300
Wer? - Jungendliche und Junggebliebene im alter 20-30.

Warum? Regelmäßige Treffen, wechselnde Locations. Crosslounge ist eine Veranstaltung der evangelischen Allianz.

After playing the good old Netrunner game from time to time, but not often enough, I want to pass it on. Netrunner is a trading card game designed by Richard Garfield, the creator of Magic: The Gathering. It is full of insider gags from classic cyberpunk (Neuromancer, etc). Words like "Wilson" or "Chiba" will trigger the right synapses. One player is the evil corporation trying to make big money, the other is a witty hacker trying to steal information from the company by breaking into their network.



My favorite card is "Fortress Architects" because of its text:
"You want us to build that? Not even God has the money to afford that!"

"You're working for Saburo Arasaka, not God."

Ok, I will keep my favorite cards and enough for two players to gamble from time to time, but I sell the the worthy rare cards (and the others) on ebay. If you are interested in one or the other card or more, buy them. All revenue made goes into a good cause: I want to buy a Nintendo WII.

During practical RDF projects, one big challenge is always how to choose good URIs for your resources. The RDF standards say very little about this topic. There are some best practices and helpful recommendations, but they are scattered all over the web. Creating "cool URIs for the semantic web" is hard.

Richard Cyganiak, Max Völkel and myself have written an article about how to choose cool URIs, filled with practical knowledge and background information about the problem and solutions. We have collected what we have learned during projects such as Semantic MediaWiki, dbpedia, D2R Server, Gnowsis, and Nepomuk. We hope that this article is a help for you or your students to get started programming Semantic Web applications.

Read it

• Cool URIs for the Semantic Web (html)
• Cool URIs for the Semantic Web (PDF version)

Abstract
The Resource Description Framework RDF allows you to describe web documents and resources from the real world—people, organisations, things—in a computer-processable way. Publishing such descriptions on the web creates the semantic web. URIs are very important as the link between RDF and the web. This article presents guidelines for their effective use. We discuss two strategies, called 303 URIs and hash URIs. We give pointers to several web sites that use these solutions, and briefly discuss why several other proposals have problems.

Notice: we have written the article late last year, but published it this year. You can republish or copy this article under the Creative Commons Attribution-NoDerivs 2.0 License.

I was on a sailing holiday at the beginning of February, ten people on a catamaran in the Carribean. Thanks to sailing, we had an Offshore Navigator on a laptop, recording the positions with a GPS mouse.

Using this GPS track and the photos taken with our two cameras, I was able to create a KML file from the journey. I used some custom PHP code I have written, a little MySQL/PHP/FlickrApi/GoogleMaps hack. It took two days to hack, which is quite nice. Included is a photo annotator to place pictures with some productivity tools (copying the position from one picture to another).

The first result is a Google Earth KML file. It shows the track of the boat and the pictures from Flickr. The other crew members don't have flickr accounts... yet.


Second, I wrote another script that sets the needed geo-tags on flickr based on the geocoding. See my flickr map.


Now that I have the code, I would love to go on with these things. Is there an open source project which dedicates itself to such mashups? We could also use Chris Bizer and Richard Cyganiaks D2RQ to make a sparql-endpoint for geo positions. Who is in?

Is there an API for plazes.com? So many things to do :-)

Henry Story visited Vienna, and he liked it.

I can copy that, Tassilo and Andreas are nice people to hang out with, and Vienna has got the most open wifi access points you will ever need.

Read his story.

Announcement:

The Semantic Desktop Hands-on Workshop will be an opportunity to learn about ongoing research and development effort in the area of Semantic Desktop, Semantic Web, and Personal Knowledge Management. It will consist of a scheduled program of talks, presentations and demos, and self-organized phases of active software development in small teams, going into hands-on development on concrete projects together.




Participants are practitioners, researchers, and interested IT persons; it is encouraged to contribute by presentations or demos of your work. Deadline for registration and submissions is March 28th.

Date & Place
April 12th - 14th, 2007,
Freie Universität Berlin,
Takustr. 9,
Berlin,
Germany



This is the perfect opportunity to meet Semantic Web people, visit Berlin, learn and do Semantic Web things. Registration, participants list, more details are all on the wiki page. Feel free to add your contributions there.
* http://www.semanticdesktop.org/xwiki/bin/view/Wiki/SemDeskHandsOn2007April

Kingsley Idehen, Uldis Bojars and John Breslin have published some ideas on how to link data from various web 2.0 sites.

Thats exactly what we wanted to implement in gnowsis 0.9.2, although we missed the great looks for it :-) look here!

Here are the blog posts about it

• Personal URIs & Data Spaces
• Linking personal posted content across communities

The idea is to use URLs from OpenID to identify people, a good approach.
Some things have to be thought of:

• It should be connected with the required 303 redirects (a person is not a document, the URL must not return a web document but instead a 303 redirect).
• Not only to aggregate the data, but also to aggregate the ideas. We need to create a personal tag cloud, like we have done in the PIMO

If you dig Java, checkout the aperture.sourceforge.net project to find code that reads flickr, can and should be extended.