Saturday, July 30, 2005

CheckRDFSyntax and Schemarama Revisited 

CheckRDFSyntax and Schemarama Revisited
"So I meant to write about a 1-line piece of Javascript, but ended up with a 5000 word freeform essay on the nature of RDF, XML, validation and so forth. It could probably do with some editing, but for now the words are in pretty much the order they came out of my brain. A short summary: thinking about our expectations of RDF “validation” can teach us a lot about RDF’s value, about it’s relationship to XML, and about the things we should focus on building next."

Web services booming in the public sector 

Web services booming in the public sector

FW: Ontology Alignment Workshop and Evaluation at K-Cap 2005 

-----Original Message-----
[]On Behalf Of Marc Ehrig
Sent: Tuesday, July 05, 2005 9:04 AM
To: Marc Ehrig
Subject: Ontology Alignment Workshop and Evaluation at K-Cap 2005


The increasing number of methods available for schema matching/ontology
integration suggests the need to establish a consensus for evaluation of
these methods. There is now a coordinated international initiative to
forge this consensus. After the two events organized in 2004 (namely,
the Information Interpretation and Integration Conference (I3CON) and
the EON Ontology Alignment Contest), this year we organize one unique
evaluation of which the outcome will be presented at the Workshop on
Integrating Ontologies held in conjunction with K-CAP 2005 at Banff
(Canada) on October 2, 2005.

The goal of the ontology alignment initiative is to provide ground to
discuss alignment and matching algorithms and system performances and to
help as much as possible their improvements.

Campaign description

This year's campaign will consist of three parts: it will feature two
real world blind tests (anatomy and directory) and a systematic
benchmark test suite. By blind tests it is meant the result expected
from the test is not known in advance. The evaluation organisers provide
the participants with the pairs of ontologies to align as well as (in
the case of the systematic benchmark suite only) expected results. The
ontologies are described in OWL-DL and serialized in the RDF/XML format.
The expected alignments are provided in a standard format expressed in
RDF/XML and described in

The anatomy real world case will have to be tested blindly. It covers
the domain of body anatomy and will consist of two ontologies with an
approximate size of several 10k classes and several dozen of relations.

The directory real world case will have to be tested blindly. It consist
of alignming web sites directory (like open directory or Yahoo's).

Like for last year's EON contest, a systematic benchmark series has been
produced. The goal of this benchmark series is to identify the areas in
which each alignment algorithm is strong and weak. The test is based on
one particular ontology dedicated to the very narrow domain of
bibliography and a number of alternative ontologies of the same domain
for which alignments are provided.

From the results of the experiments the participants are expected to
provide the organisers with a paper to be published in the workshop

The results from both, the participants and the organizers, will be
presented at the Workshop on Integrating Ontologies at K-CAP 2005 taking
place at Banff (Canada) on October, 2nd 2005. We hope to see you there.


First publication of test cases: June 10th, 2005.
Comments due: anytime before July 1st, 2005
Final publication of test cases: July 4th, 2005.
Preliminary results due: August 15th, 2005.
Camera ready copies: September 2nd, 2005.
Workshop : October 2nd, 2005.

Steering Committee

Benjamin Ashpole (Lockheed Martin Advanced Technology Lab.)
Marc Ehrig (University of Karlsruhe)
Jérôme Euzenat (INRIA Rhône-Alpes)
Lewis Hart (Applied Minds)
Todd Hughes (Lockheed Martin Advanced Technology Labs)
Natasha Noy (Stanford University)
Heiner Stuckenschmidt (Vrije Universiteit Amsterdam)
Petko Valtchev (Université de Montréal, DIRO)

Contact addresses are heiner (à) cs . vu . nl and Jerome . Euzenat (à)
inrialpes . fr


K-Cap Workshop on Integrating Ontologies
October 2, 2005 in Banff, Canada
Call for Papers


The Integrating Ontologies workshop will bring together researchers and
application developers from the area of ontology software
interoperability. Its goal is to promote the exchange of knowledge,
ideas, and future challenges for handling multiple competing ontologies.
The workshop will facilitate methodological and technical discussions.
For many domains, a variety of ontologies have been engineered, learned,
and extended. Each is an interface for a similar purpose yet uses
different nomenclatures. To enable collaboration within and across
application domains, software agents require transparency between the
various formalisms. This requires both semantic alignment and
syntactical translation. Purely manual approaches are error-prone,
onerous, and insufficient to support the vision of dynamic systems
interoperability. However, recent research in data model alignment
exploits "meaning" that is explicit and implicit in ontologies and
schemas. Consequently, if heterogeneity can be mitigated with minimal
use of standards by way of partially or fully automated alignment, then
the interoperability of and for commercial, non-profit, military, and
government systems will be simplified and improved. This workshop will
exhibit new approaches to alignment, translation, and other methods that
promise to help fulfil the vision of the Semantic Web.


The one-day workshop will consist of the three components:
- Research presentations will feature the latest efforts for ontology
alignment and mapping described in reviewed papers;
- Tool demonstrations will display alignment-empowered tools in action;
- Ontology alignment contest results will be presented. The contest
will benchmark tools against prearranged ontology pairs. Some pairs
will be synthesized by the organizers of this workshop and some will be
taken from the real world. Collectively, they will challenge the limits
of the alignment algorithms. A separate call will be issued for the contest.


The main topics of interest include, but are not limited to:
- ontology/schema alignment and matching
- ontology/schema mapping and transformation
- ontology/schema merging and integration
- ontology/schema mediation and reconciliation
- reuse of knowledge from disparate sources (text, user input, etc.) for
ontology alignment
- automatic and semi-automatic approaches
- mapping languages
- applications for and tools based on alignment
- integration within larger applications
- evaluation approaches
- translation of information between heterogeneous sources


Paper submission deadline: July 15, 2005
Notification of acceptance: August 15, 2005
Camera ready deadline: September 2, 2005
Workshop: October 2, 2005


Interested authors should submit an electronic PDF version of their
papers to Marc Ehrig (email: prior to
the submission deadline. The first page of submitted papers should
include: title, author names, affiliations, and electronic mail
addresses for all authors. Full-paper submissions should not exceed
eight pages, including title page and abstract. Alternatively, people
can submit a two-page short paper describing the technology they would
like to demonstrate, or a two-page position paper on current ongoing
research. Papers should be formatted according to the guidelines of the
main conference (

Organizing Committee

Benjamin Ashpole, Lockheed Martin Advanced Technology Lab
Marc Ehrig (main contact), University of Karlsruhe
Jérôme Euzenat, INRIA Rhône-Alpes
Heiner Stuckenschmidt, Vrije Universiteit Amsterdam

Program Committee

Dean Allemang (TopQuadrant Inc.)
Jos de Bruijn (DERI Innsbruck)
Oscar Corcho (Univesity of Manchester)
Christine Golbreich (University Rennes 1)
Lewis Hart (Applied Minds)
Todd Hughes (Lockheed Martin Advanced Technology Labs)
Ryutaro Ichise (NII, Tokyo)
Yannis Kalfoglou (University of Southampton)
Deborah McGuinness (Stanford University)
Natasha Noy (Stanford University)
Amit Sheth (University of Georgia and Semagix)
Pavel Shvaiko (University of Trento)
Michael Sintek (DFKI, Kaiserslautern)
Umberto Straccia (CNR)
York Sure (University of Karlsruhe)
Mike Uschold (Boeing Corp.)
Petko Valtchev (DIRO, Université de Montréal)

Contact address for the workshop is ehrig -at-

Marc Ehrig
Institut AIFB, Universität Karlsruhe
phone: +49-(0)721-608-8941
address: 76128 Karlsruhe (Germany)

Monday, July 25, 2005

Information | Konfabulator 

Information | Konfabulator: "What Is Konfabulator?
Konfabulator is a JavaScript runtime engine for Windows and Mac OS X that lets you run little files called Widgets that can do pretty much whatever you want them to. Widgets can be alarm clocks, calculators, can tell you your WiFi signal strength, will fetch the latest stock quotes for your preferred symbols, and even give your current local weather.
What sets Konfabulator apart from other scripting applications is that it takes full advantage of today's advanced graphics. This allows Widgets to blend fluidly into your desktop without the constraints of traditional window borders. Toss in some sliding and fading, and these little guys are right at home in Windows XP and Mac OS X.
The format for these Widgets is completely open and easy to learn so creating your own Widgets is an extremely easy task.
For the 'skinning' crowd, Konfabulator is a dream come true. You can easily change the look, feel, layout, even functionality of a Widget so that it matches your lifestyle, your desktop, or the pants or skirt you have on that day."

Sunday, July 24, 2005

The Laws of Identity 

The Laws of Identity: "The Internet was built without a way to know who and what you are connecting to. This limits what we can do with it and exposes us to growing dangers. If we do nothing, we will face rapidly proliferating episodes of theft and deception that will cumulatively erode public trust in the Internet.
We have undertaken a project to develop a formal understanding of the dynamics causing digital identity systems to succeed or fail in various contexts, expressed as the Laws of Identity. Taken together, these laws define a unifying identity metasystem that can offer the Internet the identity layer it so obviously requires. They also provide a way for people new to the identity discussion to understand its central issues. This lets them actively join in, rather than everyone having to restart the whole discussion from scratch.
Those of us who work on or with identity systems need to obey the Laws of Identity. Otherwise, we create a wake of reinforcing side-effects that eventually undermine all resulting technology. The result is similar to what would happen if civil engineers were to flaunt the law of gravity. By following them we can build a unifying identity metasystem that is widely accepted and enduring."

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