In recent years we observe growing availability of structured information on the Web. While significant part of it is in a human readable form, not adapted for automated processing (HTML, AJAX, Flash, Deep Web, Web applications), more machine-processable information enters the Web thanks to complementary top-down and bottom-up tendencies.
Bottom-up tendencies are related to publication of structured information in a machine-processable form (e.g. in XML, RDF, JSON). It also covers annotation of unstructured content with meta-data (e.g. microformats, RDFa, SIOC, MPEG-7). Top-down approaches are related to algorithmically structuring unstructured information. They combine different methods of Web mining, information extraction, classification, categorisation, automated linking and named entities recognition. Moreover, phenomena combining these tendencies, such as social annotation of resources, are widely present in today’s Web.
More structured information on the Web enables information integration using shared vocabularies (linked data approach), data mashups (domain-specific integration), and automated algorithmic information integration (schemas matching, dataspaces, lexical techniques). In parallel, popularization of mashup, data monitoring and social data sharing techniques, enable easier information reuse and growing number of intelligent services combing various dynamic information sources, algorithms and explicit or implicit users input.
The ESIW 2009 workshop will adopt a multidisciplinary approach to current tendencies in exploiting structured information on the Web. The workshop will provide an informal and vibrant forum for researchers and industry practitioners to share their research results and practical development experiences.

• Dominik Flejter, Department of Information Systems, Poznan University of Economics, Poland

• Tomasz Kaczmarek, Department of Information Systems, Poznan University of Economics, Poland

• Marek Kowalkiewicz, SAP Research Brisbane, Australia

• Manuel Alvarez, University of A Coruna, Spain

• Michael K. Bergman, Structured Dynamics LLC, USA

• John Breslin, DERI, NUI Galway, Ireland

• Irene Celino, CEFRIEL - Politecnico di Milano, Italy

• Terence Critchlow, Pacific Northwest National Laboratory, USA

• Florian Daniel, University of Trento, Italy

• Sebastian Dietzold, University of Leipzig, Germany

• Pavel Dmitriev, Yahoo!, USA

• Francesco Guerra, University of Modena and Reggio Emilia, Italy

• Thomas Hornung, Albert-Ludwigs-Universitat Freiburg, Germany

• Denis Shestakov, University of Turku, Finland

• Celine van Damme, Vrije Universiteit Brussel, Belgium

• Yu Zheng, Microsoft Research Asia, China

• Emanuele Della Valle, CEFRIEL - Politecnico di Milano, Italy