Total: 8,5 PM

4.1    (1,2 PM)

Multimedia ontology:
 - Contribution in the survey for modeling upper ontologies (with UEP):
existing models (FRBR, CIDOC-CRM, ABC) and the existing upper level ontologies
(DOLCE, SUMO, CYC).

 - Converting and re-engineering all the MPEG-7 standard into an OWL ontology
is a hard task ! With JRS, we have decided to start from a subset of MPEG-7,
namely the DAVP profile that already extends the standard to cope with some
syntactic interoperability problems. We have modeled an OWL ontology and
rules, and build some conversion tools in order to provide a Semantic
Validation Service of MPEG-7 descriptions. More precisely, the MPEG-7
descriptions are not only validated syntactically against an XML Schema, but
also semantically thanks to some logical inferences with the knowledge modeled
above. The service is available through a web application at:
http://iis.joanneum.at/mpeg-7/davp/semantics/
This work has been submitted to the SAMT 2006 conference.

4.5    (0,3 PM)

Contribution to the SotA report for "intelligent user relevance feedback":
add a chapter about the existing recommender systems (the various
implementations that exist and the types of techniques they use).

5.1    (1 PM)

We are continuing our work for bringing NewsML2 in the Semantic Web. We have
modeled an OWL DL ontology of NewsML2, and we have developped conversion tools
that allow to convert any NewsML2 descriptions in its equivalent RDF
description, in compliance with the OWL ontology. Furthermore, we have
developped a conversion tool that map the IPTC NewsCodes (20 thesaurus in XML)
in their SKOS equivalent. An online demo of these conversion tools can be
found in http://media.cwi.nl/NewsML/

We have presented these results during the IPTC Annual General Meeting, in
Vienna, http://www.iptc.org/pages/meetg_main.php (2-6 of July).

Chairing of the W3C Multimedia Semantics Incubator Group,
http://www.w3.org/2005/Incubator/mmsem/

5.3    (4.5 PM)

Facet browsing has become popular as a user friendly interface to data
repositories. In CWI, we have developed our own faceted browser, /facet, that
extends the facet browsing paradigm of Semantic Web data in four ways:
  1. Users are able to select and navigate through facets of resources of any
type and to make selections based on properties
of other, semantically related, types.
  2. We address a disadvantage of hierarchy-based navigation by adding a
keyword search interface that dynamically makes semantically relevant
suggestions.
  3. The interface of /facet allows the inclusion of facet-specific display
options that go beyond the hierarchical navigation that characterizes current
facet browsing.
  4. The browser works on any RDFS dataset without any additional
configuration.
These properties make /facet an ideal tool for Semantic Web developers that
need a instant interface to their complete dataset. The implementation is
based on current Web standards and open source software. A demo is available
at: http://e-culture.multimedian.nl/demo/search
This work has been submitted to the ISWC 2006 conference, main research track.

In order to experiment on different presentation techniques for
semantics-based interaction with multimedia, we built on the work we performed
on NewsML as part of activity 5.1. We used the conversion tools to convert a
dataset of news items (kindly provided by AFP) to their RDF representation. We
have then integrated them into the faceted browser, currently under
development in CWI. The result can be viewed at http://media.cwi.nl:8086/facet

7.2    (1 PM)

 - Organisation of the SAMT workshops and tutorials (4 workshops on 5
accepted, 3 tutorials on 6 accepted)
 - Organisation of the two special issues (JoWS and MTA) on "Multimedia
Semantics" that will follow the SAMT conference

7.4    (0.5 PM)

Joint publication CWI / JRS (Raphaël Troncy, Werner Bailer, Michael
Hausenblas, Philip Hofmair and Rudolf Schlatte) submitted to the SAMT 2006
conference entitled "Enabling Multimedia Metadata Interoperability by Defining
Formal Semantics of MPEG-7 Profiles"