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Workshop on

Ontology Evolution and
Multimedia Information Extraction

 held as part of

EKAW 2006 - 15th International Conference on
Knowledge Engineering and Knowledge Management
Managing Knowledge in a World of Networks

October 6, 2006, Podebrady, Czech Republic


Workshop Programme and Presentations

Poster Presentations



Motivation and Scope

BOEMIE 2006 focuses on the automation of the process of knowledge acquisition from multimedia content, using evolving multimedia ontologies which will be used for the extraction of information from multimedia content in networked sources. The goal is to develop synergistic approaches that combine multimedia extraction and ontology evolution in a bootstrapping process involving, on the one hand, the continuous extraction of semantic information from multimedia content in order to populate and enrich the ontologies and, on the other hand, the deployment of these ontologies to enhance the robustness of the extraction process.

The workshop is tightly coupled with the BOEMIE project, aimimg to initiate a new research activity on the automation of knowledge acquisition from multimedia content, through ontology evolution. The resulting technology will have a wide range of applications in commerce, tourism, e-science, etc. During the project, the technology will be evaluated through the development of an automatic content collection and annotation service for public events in a number of major European cities. The extracted semantic information will enrich a digital map, which will provide a friendly interface to the end user.


The workshop includes contributions to all research topics related to the BOEMIE project. We anticipate significant discussion owing to differences in potential approaches in handling the issues above. The detailed topics of the workshop include but are not limited to the following:

  • Knowledge driven multimedia analysis
  • Multimedia ontologies
  • Multimedia reasoning
  • Ontology learning
  • Ontology evolution
  • Combining multiple vocabularies
  • Interoperability among current multimedia and Semantic Web standards
  • Automatic and semi-automatic content annotation tools
  • Bridging the gap between multimedia features and semantics


The workshop is clearly related to the overall topic of EKAW, relating to knowledge engineering and Semantic Web technologies. Yet is it differentiating by focusing on the integration of two more distinct topics, ontology evolution and multimedia information extraction. Due to its multidisciplinary nature, we expect interesting discussions and exchange of different views from the involved participants and speakers. Specifically, BOEMIE 2006 is expected to:

  • bring together the different research communities involved
  • provide an overview of the state of the art in the field
  • provide a research agenda by listing open problems and promising directions
  • determine and prioritize potential work within future standardization organizations

Workshop format

The workshop will mainly consist of a number of invited talks grouped in sessions according to its main research topics:

  • Introduction to the workshop and the BOEMIE project
  • Multimedia information extraction
  • Multimedia ontologies
  • Multimedia reasoning
  • Ontology learning and evolution

Each session will include a talk related to technologies developed in the BOEMIE project, as well as additional talks from people involved in related research projects and initiatives. A panel discussion will follow between the main invited speakers along with an open discussion with all participants.

Additionally, BOEMIE 2006 will feature a poster session with open contributions by anyone working on the research topics of the workshop. The session will foster the exchange of ideas, discussions, clustering or collaborations.

Registration to the main EKAW conference is required to attend the workshop.


Welcome and introduction to Workshop

    Yannis Avrithis, National Technical University of Athens, Greece

Introduction to BOEMIE project 

    George Paliouras, NCSR Demokritos, Greece

Multimedia Information Extraction   

    Stavros Perantonis, NCSR Demokritos, Greece [BOEMIE]   
    Marcel Worring, Univ. Amsterdam, The Netherlands [MediaMill]
    Alex Hauptmann, Carnegie Mellon University, US [LSCOM]

Multimedia Ontologies

    Vassilis Tzouvaras, National Technical University of Athens, Greece [BOEMIE]
    Steffen Staab, Univ. Koblenz-Landau, Germany [
    Gregory Grefenstette, CEA, France [
Multimedia & Reasoning

    Ralf Moller, Hamburg University of Technology [BOEMIE/Racer]
    Jan Kuper, Univ. Twente, The Netherlands [
    Monique Thonnat,
INRIA, France
Ontology Learning and Evolution

    Silvana Castano, Univ. Milano, Italy [BOEMIE]
    Philipp Cimiano, Univ. Karlsruhe, Germany [X-Media/NeOn]
    Paul Buitelaar, DFKI, Germany [SmartWeb/K-Space]

Panel coordinator 

    Constantine D. Spyropoulos, NCSR Demokritos, Greece


See the full Workshop Programme here. The Poster Presentations can be found here.


BOEMIE 2006 is open for cotributions to be presented in its poster session. Contributions may include academic research, project presentations and initiatives, demos, commercial products, industrial research or contributions to standards.

Organizers and Chairs

Dr. Vassilis Tzouvaras, <tzouvaras at image dot ntua dot gr>
National Technical University of Athens, Greece

Dr. Yannis Avrithis, <iavr at image dot ntua dot gr>
National Technical University of Athens, Greece

Dr. Georgios Paliouras, <paliourg at iit dot demokritos dot gr>
NCSR Demokritos, Greece

Short biographies

Dr. Vassilis Tzouvaras has received the Bachelor of engineering degree (B-Eng) in the department of electronic and systems engineering of Essex University in UK. He received the Master of engineering degree (M-Eng) in the department of automatic control and systems engineering of Sheffield University in UK, and the Ph.D. in Image Video and Multimedia systems Laboratory (IVML) of National Technical University of Athens (NTUA). His research interests includes knowledge representation languages, extension of logic formalism with fuzzy logic operators, semantic web technologies, multimedia retrieval and neurofuzzy systems. He has been involved in 5 R&D European IST projects and in 3 national projects. He has published 6 articles in international journals and books and 25 in international conferences.

Dr. Yannis Avrithis received the Diploma degree in Electrical and Computer Engineering (ECE) from the National Technical University of Athens (NTUA) in 1993, the M.Sc. degree in Communications and Signal Processing from the Department if Electrical and Electronic Engineering of Imperial College of Science, Technology and Medicine, University of London, in 1994, and the Ph.D. degree in ECE from NTUA in 2001. He is currently a senior researcher at the Image, Video and Multimedia Systems Laboratory of the ECE School of NTUA, conducting research in the area of image / video analysis and processing, and coordinating R&D activities in national and European projects. His research interests include image / video analysis, segmentation and interpretation, content-based indexing and retrieval, video summarization and multimedia databases. He has been involved in 13 R&D projects and has published 20 articles in international journals, books and standards, and 47 in international conferences in the above areas. He has participated in the organization of 13 international conferences, and is a reviewer of 12 international journals and 10 conferences. Dr. Avrithis is an IEEE member, and a member of ACM, EURASIP and the Technical Chamber of Greece.

Dr. Georgios Paliouras hassubstantial experience on Machine Learning, applied particularly to language engineering and personalization. He is a researcher at NCSR and he has participated in several national and international projects. He is a reviewer for international journals and has participated in the programme and the organising committees of international conferences and workshops. He has served as Gen. Secretary and Treasurer of the Greek AI Society. His industrial experience includes work as a software engineer for Siemens AG, Karlsruhe. He is co-founder of the spin-off company i-sieve™ technologies.