About the Contributors

Jörg Rech is a project manager and senior scientist at the Fraunhofer Institute for Experimental Software Engineering (IESE) in Kaiserslautern, Germany. He received the BS (Vordiplom) and the MS (Diplom) in computer science with a minor in electrical science from the University of Kaiserslautern, Germany. His research mainly concerns software antipatterns, software patterns, defect discovery, software min- ing, software retrieval, automated software reuse, software analysis, and knowledge management. He is also the speaker of the GI working group on architectural and design patterns. Contact him at joerg. [email protected].

Björn Decker is a solution engineer for semantically enabled knowledge management solutions at empolis GmbH, part of avarto, a Bertelsmann company. Before that occupation, he was a project manager and scientist at the Fraunhofer Institute for Experimental Software Engineering (IESE) in Kaiserslautern, Germany. He received the BS (Vordiplom) and the MS (Diplom) in computer science from the Univer- sity of Kaiserslautern, Germany. His research interests are experience management, in particular the collaborative maintenance of online repositories and usage of social software. He is a trainer concern- ing the usage of Wikis in software engineering companies and scientific writing. He organizes and is PC member of different workshops and conferences in the domain of software engineering, semantic Wikis, and experience management. Contact him at [email protected].

Eric Ras is a senior scientist at the Fraunhofer Institute for Experimental Software Engineering (IESE) in Kaiserslautern, Germany. He received the BS (Vordiplom) and the MS (Diplom) in computer science from the University of Kaiserslautern, Germany. His research interests are learning material production, vocational training methods, software patterns, and experience management. Eric Ras is scientific coordinator of the international distance learning program Software Engineering for Embedded Systems at the University of Kaiserslautern, Germany. He organized and is PC member of different workshops and conferences in the domain of software engineering, e-learning, and knowledge management. Contact him at [email protected].

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Enrique Alfonseca is a lecturer at the Universidad Autonoma de Madrid since 2001. His main research interests are natural language processing topics such as information extraction, text summarisation, sentiment analysis, parsing, semantic annotation, and application of NLP to e-learning.

Olli Alm is a research assistant in the Semantic Computing Research Group (SeCo) at the University of Helsinki, Department of Computer Science, and at the Helsinki University of Technology, Laboratory of Media Technology. His research interests include ontology-based information extraction.

Klaus-Dieter Althoff is full professor at the University of Hildesheim and is directing a research group on intelligent information systems. He studied mathematics with a focus on expert systems at the Uni- versity of Technology at Aachen. In 1992 he finished his doctoral dissertation on an architecture for knowledge-based technical diagnosis at the University of Kaiserslautern, where he also received the postdoctoral degree (Habilitation) with a thesis on the evaluation of case-based reasoning systems in 1997. He worked at the Fraunhofer Institute for Experimental Software Engineering as group leader and department head until he went to Hildesheim in April 2004. His main interests include techniques, methods and tools for developing, operating, evaluating, and maintaining knowledge-based systems, with a focus on case-based reasoning, agent technology, experience management, and machine learning.

Sören Auer leads the research group Agile Knowledge Engineering and Semantic Web (AKSW) at the department Business Information Systems (University of Leipzig). He studied mathematics and computer science in Dresden, Hagen and Ekaterinburg, Russia. From 2000 to 2003, Sören was managing director of adVIS GmbH, a Dresden-based Internet and IT service provider. In 2006 he finished his PhD thesis on agile knowledge engineering at the University of Leipzig. Sören is project leader of Powl/OntoWiki, an integrated open-source, Semantic Web development framework for the scripting language PHP and founding member of the DBpedia project. Sören is author of over 50 peer-reviewed scientific publications, co-organiser of several workshops and chair of the first Social Semantic Web conference.

Michel Buffa is an associate professor at the University of Nice Sophia Antipolis. He is also a researcher in the Mainline group of the I3S laboratory and conducts his research work on the Semantic Web and social networks now. Currently he is a visiting scientist in the EDELWEISS/ACACIA group at INRIA Sophia-Antipolis where he works on the SweetWiki software that is used by several communities of practice.

María Ruiz Casado is a PhD student at the Escuela Politécnica Superior, Universidad Autonoma de Madrid. Her thesis topic is Ontology Learning and Population from Free Text.

Pablo Castells is associate professor at the Universidad Autonoma de Madrid since 1999, where he leads and participates in several national and international projects in the areas of the semantic-based knowledge systems. His current research interests are focused on information retrieval, personalisation technologies, and context modelling.

Ángel García Crespo is the head of the SofLab Group at the Computer Science Department in the Carlos III University and the Head of the Institute for Promotion of Innovation Pedro Juan de Lastanosa, Madrid. He holds a PhD in Industrial Engineering from the Universidad Politécnica de Madrid (award

About the Contributors

from the Instituto J.A. Artigas to the best thesis) and received an Executive MBA. from the Instituto de Empresa. Professor García Crespo has led and actively contributed to relevant European Projects of the FP V and VI, and also in many business cooperations. He is the author of more than 100 publications in conferences, journals, and books, both Spanish and international.

Jin-Song Dong received both a Bachelor (1st class honors) and a PhD degree in computing from Univer- sity of Queensland in 1992 and 1996. From 1995-1998, he was a research scientist at the Commonwealth Scientific and Industrial Research Organisation in Australia. Since 1998 he has been in the School of Computing at the National University of Singapore (NUS), where he is currently associate professor and assistant dean. He is a Steering Committee member of the International Conference on Formal En- gineering Methods (ICFEM) and the Asia Pacific Software Engineering Conference (APSEC) series.

Guillaume Erétéo is a graduate student engineer from the Computer Science Department of Ecole Polytechnique Universitaire de Nice Sophia-Antipolis.

Roar Fjellheim is a cofounder and director of business development at Computas AS, a Norwegian SME specializing in work support systems and knowledge-based systems. He is also an associate professor in computer science at the University of Oslo. His primary professional interests are industrial applications of semantic technology, artificial intelligence, and systems engineering. Fjellheim has an engineering degree from the Norwegian University of Science and Technology (Trondheim). Prior to joining Computas, he held positions at The Norwegian Computing Centre (Oslo), CERN (Geneva), Det Norske Veritas (Oslo), and Innovation Norway (San Francisco).

Thomas Franz is a researcher in the group for Information Systems and Semantic Web (ISWeb) at the University of Koblenz-Landau, Germany. He joined ISWeb in 2005. His research interests include personal information management, Semantic Web, and knowledge representation. He is involved in the European research project X-Media and has previously worked in the research center for Knowledge Management at the University of Applied Sciences Cologne, Germany. Thomas holds a Masters Degree in computer science from the University of Freiburg and a diploma degree from the University of Applied Sciences, Cologne. He attended the Clemson University, USA, and the Chalmers University, Sweden

Fabien Gandon is a full-time researcher in Informatics and Computer Science in the EDELWEISS/ ACACIA Research team of INRIA in the Research Center of Sophia-Antipolis (France). He has a PhD in Computer Science and he is a Graduated Engineer in Applied Mathematics from INSA. His professional interests include: Semantic Web, ontologies, knowledge engineering and modelling, mobility, privacy, context-awareness, Web services, and multi-agents systems. His main domain of application is organizational memories (companies, communities, etc.) and knowledge management in general. He also participates to W3C working groups.

Nicholas Gibbins is a lecturer in the School of Electronics and Computer Science at the University of Southampton. He is currently an investigator on the EU-funded TAO project, and was previously a member of the EPSRC-funded Advanced Knowledge Technologies project from 2000-2007. His research interests include open hypertext and hypermedia, large-scale multiagent systems, and the Semantic Web.

About the Contributors

Juan Miguel Gómez is a visiting professor at the Computer Science Department in the Carlos III Uni- versity. He holds a PhD in Computer Science from the Digital Enterprise Research Institute (DERI) at National University of Ireland, Galway and received his MSc in Telecommunications Engineering from the Universidad Politécnica de Madrid (UPM). He was involved in a number of EU FP V and VI research projects and was a member of the Semantic Web Services Initiative (SWSI). His research interests include the Semantic Web, Semantic Web services, business process modeling, B2B integration, and recently, bioinformatics. He has published a great number of articles in journal, conferences, and book chapters.

Eero Hyvönen is a professor of media technology at the Helsinki University of Technology, Laboratory of Media Technology, and a docent of computer science at the University of Helsinki, Department of Computer Science. He directs the Semantic Computing Research Group (SeCo).

Zachary Ives is an assistant professor at the University of Pennsylvania and an associated faculty member of the Penn Center for Bioinformatics. He received his BS from Sonoma State University and his PhD from the University of Washington. His research interests include data integration, peer-to-peer models of data sharing, processing and security of heterogeneous sensor streams, and data exchange between autonomous systems. He is a recipient of the NSF CAREER award and a member of the DARPA Computer Science Study Panel.

Malte Kiesel has been working at DFKI Knowledge Management since 2004, participating in the SmartWeb project which focuses on making web contents available on mobile devices using Semantic Web technologies. His research interests are semantic wikis and creating personalized views using both automatically and manually generated metadata. He maintains the semantic wiki Kaukolu which was used in the NEPOMUK semantic desktop project. Currently, Kaukolu is extended in the Mymory project for handling attention data gathered by an eyetracker. The idea is to generate views on information stored in the personal wiki using context as well as attention information. http://smartweb-project.org/ http://kaukoluwiki.opendfki.de/ http://nepomuk.semanticdesktop.org/ http://www.dfki.de/mymory/

Ross King received his PhD in physics from Stanford University. After moving to Vienna in 1995, he migrated to the IT sector, and joined Research Studios Austria in 2002 to help found the Studio Digi- tal Memory Engineering, where he presently serves as Head of Operations. His research interests are primarily concerned with multimedia information management and retrieval.

Andrea Kohlhase holds a diploma in Mathematics from the Technical University Berlin. After gradua- tion, she spent 10 years in the software industry, but came back to academia via a research programmer- ship at Carnegie Mellon University, Pittsburgh. She is currently finishing her PhD studies at University Bremen (DiMeB) and works as a senior research associate at Jacobs University, Bremen. Her research interest lies in the field of Human-Computer Interaction, especially semantic interaction design, with a focus on HCI in educational environments. She has developed the software package “CPoint,” offer- ing an invasive, semantic editor, and educational environment for educators as well as students in MS PowerPoint.

0 About the Contributors

Michael Kohlhase is professor for Computer Science at Jacobs University Bremen and Vice Director at the German Research Center for Artificial Intelligence (DFKI), Lab Bremen. His current research interests include automated theorem proving and knowledge representation for mathematics, infer- ence-based techniques for natural language processing, and computer-supported education. He has pursued these interests during extended visits to Carnegie Mellon University, SRI International, and the Universities of Amsterdam and Edinburgh. Michael Kohlhase is recipient of the dissertation award of the Association of German Artificial Intelligence Institutes (AKI, 1995) and of a Heisenberg stipend of the German Research Council (DFG, 2000-2003). He was a member of the Special Research Action 378 (Resource-Adaptive Cognitive Processes), leading projects on both automated theorem proving and computational linguistics. Michael Kohlhase is trustee of the MKM and CALCULEMUS Conferences, a member of the W3C MathML working group and the president of the OpenMath Society.

Christoph Lange is a PhD student in the Smart Systems program at Jacobs University Bremen. He holds a degree in computer science from the University of Trier. His research interests lie in the areas of semantic and nonsemantic wikis, as well as representing and managing mathematical knowledge. He is the editor of two textbooks about wikis and an active contributor to the German and English editions of Wikipedia. His PhD research topic is the creation of a semantic wiki that supports scientists and learners by integrating various services, based on the SWiM prototype presented in this book.

Yuan Fang Li is a research fellow at the School of Computing, National University of Singapore. His research interests include the Semantic Web, formal methods and software verification. He received his PhD in computer science from National University of Singapore.

Damaris Fuentes Lorenzo holds a B.S in Technical Engineering in Computer Managements from the Universidad Carlos III de Madrid and an MSc in Computer Engineering, Development of the Enterprise Information System Specialization. She is enrolled in a Master of Computer Science and Technology, specialized in Software Engineering. She has taken up several scholarships in both the Departments of Telematics and Computer Science of Carlos III University, involved in the latter as a research techni- cian. Her research interests include Semantic Web, ontological engineering, collaborative software and Web accessibility and usability.

Normen Müller is research fellow in the Smart Systems program at Jacobs University Bremen. He holds a degree in Computer Science from the Technical University Darmstadt. His research interests lie in mathematical foundations and logic of computer science, knowledge representation based on description logic, and document engineering, particularly management of change. Based on ontology-driven management, he is currently developing the management of change software prototype “locator.”

David Norheim is a principle engineer and leads Semantic Web activities at Computas AS, and heads a special interest group for the Semantic Web in the Norwegian Computer Society, and a Semantic Interoperability group in The Norwegian Foundation for E-Business and Trade Procedures. He has experience with applying Semantic Web technologies for various user groups and application areas since 2001, and cofounded a Semantic Web start-up company. Norheim has an engineering degree from the Norwegian University of Science and Technology (Trondheim). Prior to joining Computas he held positions at Joint Research Centre of European Commission (Italy), Innovation Norway (San Francisco), Asemantics (Italy), and University graduate studies at Kjeller (Oslo).

About the Contributors

Eyal Oren is a PhD student and researcher at the Digital Enterprise Research Institute. He has published and presented some 30 papers at international conferences and workshops. His research is concerned with application development on the Semantic Web, in particular with data-driven techniques for data access, data navigation, data entry, and data discovery. He is the creator and developer of ActiveRDF, BrowseRDF, and SemperWiki, and is recently working on Sindice.com, a Semantic Web lookup service. See his homepage on http://www.eyaloren.org/ for more information.

Jeff Z. Pan received the PhD in Computer Science from the University of Manchester in 2004. He is a lecturer of computing science at the University of Aberdeen, UK. His main research interests lie in the design of logics and ontology languages, automated reasoning, ontology usability, and the applications of all the above (such as in the Semantic Web). He is a PC Chair of the First International Conference on Web Reasoning and Rule Systems (RR2007). He serves as a co-editor of the Special Issue on Ontol- ogy Dynamics of the Journal of Logic and Computation, as well as a co-editor of the Special Issue on Extended Papers from 2006 Conferences of Journal of Data Semantics. Jeff is very active in the World Wide Web Consortium (W3C), serving as a cochair the W3C Multimedia Semantics Incubator Group, as well as a co-coordinator of both the Software Engineering and the Multimedia Task Forces in the W3C Semantic Web Best Practices and Deployment Working Group (2004-2006). He is also a cochair of the Fuzzy RuleML Technical Group and a member of the RuleML steering committee.

Terry Payne is a Lecturer within the Intelligence, Agents, Multimedia Group, at the University of Southampton. He holds an MSc and PhD in Artificial Intelligence from the University of Aberdeen, Scotland, and is currently engaged in research on Semantic Web services, semantics for service discovery, and agent-based services. To date he has published over 90 papers and articles, and in 2001 was the winner of the Semantic Web challenge. He is on several Program Committees for various Agents, Services and Semantic Web conferences and chaired the 2003 AAAI Spring Symposium on Semantic Web Services, and the 2005 AAAI Fall Symposium on Agents and the Semantic Web, and was one of the co-authors of the W3C OWL-S Service Description Language Recomendation Note.

Jurij Poelchau was born 1963 in Berlin. In 1982-1998, he studied physics, mathematics, and philosophy at the Technical University Berlin as a scientific assistant. He has publications in the field of many-body quantum mechanics. Since 1998, Jurij has been a researcher and consultant for sustainability strate- gies at Agenda-Agency Berlin (cofounder), TU Berlin, Regioconsult, and fx-Institute for Sustainable Economics (co-founder). His main field of work is to synthesize social, cultural, ecological, economic, and technological innovation. Since 2007, he has been a consultant for the DeepaMehta company and is cofounder of the amina-foundation.

Niko Popitsch received his diploma degree in computer science from the Technical University in Vi- enna. He gained industry experience by working several years as a software architect and developer and joined the Research Studios Austria in 2003, where he is currently involved in all facets of the METIS project. His research interests lie in the area of infrastructures for contextaware multimedia applications. Currently he is leading the development of the semantic wiki implementation “Ylvi” that is based on the METIS middleware.

About the Contributors

Martin Povazay is the managing director, founder, and owner of P.Solutions Informationstechnologien GmbH. He studied business informatics and physics at University Vienna and Technical University Vienna, previously working at the Austrian Parliament and in numerous management positions such as Priority Telecom GmbH as the manager of the process management staff unit and Update Software AG as Product Manager of e-media/Web based products. Since 2000, he has been involved in numerous research and development projects like FLoCiEE, PADD, and SemDAV, and has been focussed on semantic and business systems as well as the design of information systems which correspond to the human factor.

Axel Rauschmayer received the diploma in computer science from the University of Munich and wrote his diploma thesis in cooperation with the University of Texas at Austin. He was also one of the first three technical people behind Pangora, a shopping portal company that now powers the shopping pages of a wide range of European sites (among others, AOL, T-Online, Froogle, and Lycos). Currently, he is a PhD student at the University of Munich. His main research project is Hyena, an extensible integrated RDF editor whose RDF vocabulary support includes a semantic wiki, Java source code references, and declarative definitions for form-based editors that is based on the Fresnel display vocabulary. http://hypergraphs.de/

Brigitte Rauter studied European Ethnology at the University of Vienna and received her Mag. phil. in 1997. She has additional skills in Web design and project management. She has worked as an exhibi- tion curator and project manager in several projects, for example, from 2002-2004, on an EU project “Scalex” at Technical Museum Vienna, in 2005 on an EU project “PADD,” in 2006 on a FIT-IT project, “SemDAV,” and at P.Solutions. Since 2000, she has worked in IT branch as project coordinator, product marketer, and “translator” with the focus on bringing together the technical view and ideas and the users needs.

Jörg Richter was born in 1967 in Berlin. He has developed software since 1980. He won the CHIP programming award in 1985. Between 1988 and 1995, he studied computer science (focusing on AI and software engineering) and linguistics at Technical University Berlin. He was a fellow at Research Centers for Network Technologies and Multimedia Applications under Prof. Rebensburg, a professional software developer in the areas of knowledge management, e-learning, and learning management, and a lead developer of artfacts.net, the world’s largest portal for modern and contemporary art. Since 2005, he has been the CTO of the DeepaMehta company. He won the Best-Practice awards for DeepaMehta of D21, we make IT Berlin, and Brandenburg initiatives.

Sebastian Schaffert is working as a senior researcher and project manager at the group for Knowledge- based Information Systems (KIS) at Salzburg Research as of August 2005. Since 2006, he has also been the scientific director of Salzburg NewMediaLab (SNML), the Austrian industry competence centre on New Media hosted by Salzburg Research. SNML is carrying out industrial research in the areas of social software, semantic systems, and multimedia content management. From 2001-2005, Sebastian was a research and teaching assistant at the Institute for Informatics, University of Munich, Germany. He received his PhD from the University of Munich in 2004 with a dissertation entitled “Xcerpt: A Rule- Based Query and Transformation Language for the WEb.” Sebastian Schaffert is engaged in research

About the Contributors

on the Semantic Web, social software, e-learning, knowledge representation and knowledge-based systems, reasoning and programming languages. His particular interest is currently in the combina- tion of social software with Semantic Web technologies. He is primary developer of the semantic wiki system IkeWiki. In the above-mentioned areas, he has numerous publications and is member of many programme committees in international journals, conferences, and workshops. Sebastian Schaffert was among other things also the initiator and coprogramme chair of the 1st Workshop “From Wiki to Semantics” that took place in Budva, Montenegro, in 2006 and of the Semantics conference series (2006 in Vienna, 2007, in Graz), which is concerned about the “Social Semantic Web” and industry-relevant research on Semantic Systems.

Bernhard Schandl received his diploma in economics and computer science from Technical University of Vienna and University of Vienna. He worked in various companies including Siemens and Kapsch as software engineer and developer. Since 2004, he has been employed as researcher at University of Vienna. He worked on the METIS/Ylvi platform and in several research projects, including BRICKS and SemDAV. His research interests embrace semantic multimedia systems, personal information management, and information systems usability issues.

Andreas Schmidt is Department Manager for the competence area Knowledge and Learning within Information Process Engineering at the FZI Research Center for Information Technologies in Karl- sruhe, Germany. He received his diploma in computer science from the University of Karlsruhe and was working in several national and European research projects. Within the project Learning in Process where he was leading the scientific activities, he has developed a competency-oriented methodology for supporting work-integrated learning on demand. His research interests include workplace learning support, competence management, context-aware services, and ontology-based techniques. He is an assistant lecturer at the University of Karlsruhe and scientific coordinator of the EU Integrating Project MATURE.

Sergej Sizov is the research fellow in the ISWeb group (Information Systems & Semantic Web) at the University of Koblenz-Landau, Germany. He holds PhD degrees in Applied Mathematics and Computer Science. In the past, he held positions as researcher, project leader, and lecturer at the University of Saarland, Germany, and the Max-Planck Institute for Computer Science, Germany. In his prior work, he substantially contributed to the methodology of thematically focused Web exploration, collaborative IR methods in decentralized environments, and meta methods for Web-based machine learning applications. His research interests include thematically focused Web search, self-organizing folksonomies, peer-to-peer search and retrieval.

Jing Sun is a senior lecturer at the Department of Computer Science, The University of Auckland, New Zealand. He obtained his PhD degree from the Department of Computer Science, National University of Singapore in March 2004. Dr. Sun’s research interests include Software Engineering, Formal Methods, and Semantic Web.

Antti Vehviläinen was a research assistant at the Semantic Computing Research Group (SeCo) at the Laboratory of Media Technology at the Helsinki University of Technology. He is currently working at Accenture Ltd in Finland.

About the Contributors

Max Völkel is working as a PhD student and research assistant at the Forschungzentrum für Informatik (FZI) at the Universität Karlsruhe(TH). His topics are personal knowledge management, Semantic Web infrastructure, and semantic wikis. He has organized several workshops on semantic wikis (SemWiki 2006 at the ESWC, see http://semwiki.org). In the Knowledge Web Network of Excellence, he has worked on versioning RDF data and programmatic access of ontologies (RDFReactor, http://rdfreactor.sem- web4j.org). He works in the EU-project NEPOMUK to build a next-generation knowledge articulation tool. He is the author of a number of RDF-based tools such as RDF2Go (http://rdf2go.semweb4j.org), a triple store abstraction layer. Currently he works on a Semantic Web content repository (http://swecr. semweb4j.org), unifying RDF and Web 2.0 content management. He is also one of the founders of the Semantic MediaWiki project (http://ontoworld.org). His recent works include management of semantic content and gradual formalization of text to structures and finally into semantic content.

Hai H. Wang obtained Bachelor (1st class honors) and PhD degrees from the School of Computing, Na- tional University of Singapore (NUS) in 2001 and 2004. He worked as a research assistant in the School of Computing at NUS from 2001-2003 and as a research associate in the School of Computer Science at The University of Manchester from 2003-2006. Since 2006, he has been in the School of Electronics and Computer Science at The University of Southampton where he worked as a research fellow. His main interests include software engineering, formal methods ontology, and Semantic Web.