DEXA 2007 Poland Pictures

Opening & Invited Talks

Monday, 3 September 2007

9.00 - 9.30 General Opening of DEXA 2007

Welcome address:
Prof. Dr. Günther Pernul, Universität Regensburg, General Chair DEXA 2007
Prof. Dr. Alf Zimmer, Rector Universität Regensburg, Regensburg, Germany

Welcome of DEXA:
Prof. Dr. Roland R. Wagner, President of the DEXA Association, University of Linz, Austria


Monday, 3 September 2007, 11.30 - 12.30

Barbara Pernici, Politecnico di Milano, Italy

"Self-healing Information Systems"

Information systems in highly dynamic collaborative environments are based on the composition of services and processes from different organizations and systems. In most cases, such an environment is not under the control of a single organization and therefore requires a particular attention to its management to ensure correct functionalities. Different types of faults can occur in the system, both at the functional level and in terms of reduced quality of service. Such faults may cause failures in one or more participating processes, which are hindering the correct completion of business processes towards their required goals. In the presentation, the management of cooperating processes will be discusses, following the approach being proposed within the WS-DIAMOND European project: management of failures is driven by the diagnosis of causes that are leading to the failures, and repair actions are performed on processes and services coordinating repair actions on services. Such an approach allows an autonomic behavior of information systems, reducing the need of design efforts to anticipate possible combinations of predicted exceptions. Business process management is based on the SH-BPEL (Self-healing Business Process Language) approach proposed at Politecnico di Milano to manage and repair business processes in a flexible service-oriented framework.

Tuesday, 4 September 2007, 11.30 - 12.30

Rudolf Bayer, Technical University of Munich, Germany

"Information Life Cycle, Information Value and Data Management"

Data volumes grow extremely fast. Storage capacity and cost can easily cope with that growth,
but data access is critical. However, most information has a surprisingly short life cycle.
This has a deep impact on data management systems and leads to a new storage architecture
consisting of the two subsystems FileCache and FileStore with many advantageous properties
w.r. to reliability, availability and cost. A multidimensional database of metadata is used
to organize the data. This architecture is also suitable for complete multimedia biographies.

Wednesday, 5 September 2007, 11.30 - 12.30

Alfred Kobsa, University of California, Irvine, USA

"Privacy-Enhanced Personalization"

Web personalization has demonstrated to be advantageous for both online customers and vendors.
However, current personalization methods require considerable amounts of data about users,
and the benefits of personalization are therefore counteracted by privacy concerns.
Personalized systems need to take these concerns into account, as well as privacy laws and
industry self-regulation that may be in effect. Privacy-Enhanced Personalization aims at
reconciling the goals and methods of user modeling and personalization with privacy considerations,
and to strive for best possible personalization within the boundaries set by privacy.
This talk surveys recent research on factors that affect people's personal information disclosure
and on personalization methods that bear fewer privacy risks, and presents design recommendations
based thereon.

Thursday, 6 September 2007, 11.30 - 12.30

Stephen Brobst, Chief Technology Officer for NCR's Teradata Division

"The Future of Data Warehousing"

This talk examines key trends in data warehouse deployment and developments in advanced technology. Specific areas of focus include: (1) data acquisition and delivery, (2) operational intelligence in the real-time enterprise, and (3) analytic applications architecture. The implications of these technology developments for data warehouse implementations will be discussed with examples from across a number of different industries.

Friday, 7 September 2007, 11.30 - 12.30

Wolfgang Gentzsch, D-Grid, RENCI, and Duke University


In the last decades, the Internet and the World Wide Web have
evolved into a new infrastructure for science, business, and the public.
Driven by the need to better cope with recent trends and developments caused
by globalization, complexity, and the grand challenges, we are refining and
enhancing this infrastructure with powerful new tools for communication,
collaboration, computation and the huge amounts of resulting data and
knowledge. Researchers and business people alike are more and more able to
easily access the tools, the data and the IT resources they need to solve
their applications and to increase knowledge, via Grid and Service Oriented
Architectures, and the technologies and tools to build them. This
presentation will highlight Grids, SOA, and Web 2.0 and how they relate and
complement, and the benefits they bring to scientists, businesses, and our
whole society, supported by a number of use cases from research, industry,
and public community.