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InterVal – Knowledge Nets

InterVal – Knowledge Nets. Humboldt-Universität zu Berlin Freie Universität Berlin. Knowledge Nets – People. Freie Universität Berlin Prof. Dr.-Ing. Robert Tolksdorf Malgorzata Moch ó l Christian Bizer Radoslaw Oldakowski Humboldt-Universität zu Berlin Dr. Rainer Eckstein Ralf Heese.

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InterVal – Knowledge Nets

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  1. InterVal – Knowledge Nets Humboldt-Universität zu Berlin Freie Universität Berlin

  2. Knowledge Nets – People • Freie Universität Berlin • Prof. Dr.-Ing. Robert Tolksdorf • Malgorzata Mochól • Christian Bizer • Radoslaw Oldakowski • Humboldt-Universität zu Berlin • Dr. Rainer Eckstein • Ralf Heese

  3. Agenda • Knowledge Nets • Global Sourcing – Application and Technology Scenarios (AM 1.1) • Business to consumer e-commerce • Recruitment scenario • Software infrastructure (AM 3.1) • Development of the software infrastructure for the scenarios • Knowledge Transfer • Publications • Workshops and Conferences • Lectures • Co-operations within Internet Economy • Industrial and Academic Co-operations

  4. Knowledge Nets (Subproject A)

  5. Knowledge Nets – Goals • Scenario-based analysis • Predict economic impacts of theSemantic Web technologies on E-Commerce • Business viewpoint • Predict impacts on markets and value chains • Estimate feasibility based on participants’ interests and business models • Technological viewpoint • Derive requirements for the technological infrastructure • Evaluate current technological developments

  6. Global Sourcing – Application and Technology Scenarios (AM 1.1)

  7. Application and Technology Scenarios B2C / HR-Domain • Business to consumer e-commerce enhanced with Semantic Web technologies • Employment market enhanced with Semantic Web technologies • Analysis of today’s applications • Job postings are written in the form of free text using uncontrolled vocabularies • The meta-search engines available perform searches on a full text basis • The search results are limited in their ability to provide offers that match the precise needs of their clients • There are many different existing taxonomies for the classification of job posting

  8. Application and Technology Scenarios HR-Domain • Szenario • Information providers publish in RDF according to common ontologies • Semantic Portals collect the information and offer semantic matching services. • Implications • Job Seeker (employee) • Increased market transparency • Higher precision of search results • Job Poster (employer, job portals, state job centre) • Open n:m communication – increased market transparency • Costs reduction • Changes in the business models

  9. Application and Technology Scenarios HR-Domain – Ontology • We use an ontology for recruitment scenario that is based on JobPositionPosting and JobPositionSeeker from HR-BA-XML • Information is represented in OWL using controlled vocabularies

  10. Application and Technology Scenario HR-Domain – Matching • Matching is a process of determining of graph similarity • Graph similarity is the sum of the cluster similarities • Calculation of similarities for single node • Taxonomic similarity • Attributive similarity • Matching allows us to generate the ranking of results

  11. RDF-enchanced Websites RDF Repository RAP RDF Repository SAP HR Scenario Architecture Information Consumers Information Integration + Matching Information Providers Semantic Portal Net API RAP API Semantic Matching Engine Crawler D2R Joseki Jena

  12. Evaluation toolkit (AM 3.1)

  13. Evaluation Toolkit Semantic Web Framework • RAP – RDF API for PHP • leading RDF toolkit for PHP developers • features for parsing, manipulating, storing, querying, serializing, and serving RDF models • Open source, 1200 downloads • D2R • D2R MAP - declarative language to describe mappings between relational database schemata and OWL/RDFS ontologies • D2R Processor - exports data from a relational database into RDF • Open source, 300 downloads

  14. Application and Technology Scenarios • Surveys • Current state of data exchange in the sectors • Automotive retail • Consumer packaged goods (CPG) retail • Telecommunication • Liberalization of business markets • Semantic Web trust architecture • Repositories and Tools for RDF/S • RDF Algebra • Mapping of query statements to algebra enabling efficient query evaluation on huge amounts of RDF data • Modelling and Generation of Ontologies • Modeling of OWL Ontologies with UML

  15. Knowledge Transfer

  16. Knowledge Transfer – Publications I • Published • Ralf Heese Neue Konzepte für RDF-Managementsysteme 16. Workshop über Grundlagen von Datenbanken. Monheim, June 2004. • Christian Bizer and Radoslaw Oldakowski Using Context- and Content-Based Trust Policies on the Semantic Web. 13th International World Wide Web Conference 2004. New York, USA, May 2004. • Robert Tolksdorf, Christian Bizer, Rainer Eckstein, and Ralf Heese Business to Consumer Markets on the Semantic Web. International Workshop on Metadata Security, OTM Conference, Catania, Italy, November 2003. • Robert Tolksdorf, Christian Bizer, and Ralf Heese. A Web Service Market Model based on Dependencies. 12th International World Wide Web Conference 2003. Budapest, Hungary, Mai 2003.

  17. Knowledge Transfer – Publications II • To appear • Malgorzata Mochol, Radoslaw Oldakowski, and Ralf Heese Ontology based Semantic Matching in Recruitment Processes Semantische Technologien für Informationsportale, Informatik 2004. Ulm, Germany, September 2004. • Radoslaw Oldakowski, Christian Bizer RAP: RDF API for PHP 1st International Workshop on Interpreted Languages (colocated with the NetObjectDays 2004 Conference), Erfurt, September 2004. • Robert Tolksdorf, Christian Bizer, Rainer Eckstein, and Ralf Heese Trustable B2C Markets on the Semantic Web Special Issue on Metadata for Security des International Journal of Computer Systems, Science and Engineering, 2004.

  18. Knowledge Transfer – Publications III • Submitted for reviewing • Jeremy J. Carroll, Christian Bizer, Pat Hayes and Patrick SticklerNamed Graphs, Provenance and Trust.3rd International Semantic Web Conference 2004, Hiroshima, Japan, November 2004. • Rainer Eckstein, Johannes KirschMOwU - Modeling OWL Ontologies with UML 3rdInternational Semantic Web Conference 2004, Hiroshima, Japan, November 2004. • Ralf Heese, Rainer Eckstein, Jan Große RAT - An RDF Algebra Based on Triples2nd Workshop Semantic Web and Databases, VLDB 2004, Toronto, Canada, August 2004

  19. Knowledge Transfer – Workshop • SWEB2004 – International Workshop onSemantic Web Technologies in Electronic Business • As a part of the Berliner XML Tage 2004 (October 2004)www.berliner-xmltage.de • Cooperation with working groups • Technologie-induzierte Veränderungen der Wertschöpfungssysteme • Informationsqualität Semantic Web • Excellenznetzwerk KnowledgeWeb • Topics • Semantic Web (Ontologies, Mapping, Matching, Data Interoperability and Quality, Processing) • Technology induced Changes of the Value Chain • Trust, Privacy, Security • Application Scenarios and Prototypes • Industrial Efforts and Experiences

  20. Knowledge Transfer – Selected Conferences Selected memberships in Program Committees • Prof. Dr.-Ing. Robert Tolksdorf • Workshop XML-Technologien für das Semantic Web (XSW 2004) • 6th International Conference on Enterprise Information Systems (ICEIS 2004) • 2nd International Workshop on Security in Information Systems in conjunction with ICEIS2004 • Session Systems for Large-scale Metadata Extraction and Maintenance at the KES’2004 8th International Conference on Knowledge-Based Intelligent Information & Engineering Systems • Dr. Rainer Eckstein • Workshop XML-Technologien für das Semantic Web (XSW 2004) • IADIS International Conference WWW / Internet 2004 • Christian Bizer • Trust, Security, and Reputation on the Semantic Web, Workshop at 3rd International Semantic Web Conference (ISWC 2004)

  21. Knowledge Transfer – Lectures • XML-Technologies in E-Business • Presentations on classifications and specifications in E-Business • A part of the Termination Meeting of <xmlcity:berlin> project • At IHK Berlin in December 2003 • The Semantic Web Trust Layer • Talk at the 13th International World Wide Web Conference 2004, Developers Day, New York, May 2004 • Application of Semantic Web technologies in the recruitment domain • Invited talk – HU Berlin, June 2004 • Anwendungen des Semantic Web und ihre ökonomischen Perspektiven • Research colloquium CIS and FhG ISST, Technical University Berlin, January 2004 • Colloquium in Institute for Information Systems, University Hannover (cooperation with research centre L3G) Hannover, February 2004 • WS 2003/04 - FU Berlin, Institut für Informatik • Seminar Internetökonomie • Lecture XML-Standards für das E-Business • Project, Seminar – Semantic Web • Lecture, Project, Seminar – XML

  22. Knowledge Transfer – Miscellaneous • News release, May 2004 • Seminar papers • RDBMS-based Systems for Storing RDF • Querying RDF Repositories • Master theses • Algorithms for Semantic Matching • Semantic Web Infrastructure in the field of B2C markets • Exchange student from the University of Beijing • 6 PhD dissertations are being written • On the field of Semantic Web • PhD students’ network • FU, HU, TU, University Potsdam, University Viadrina (Frankurt/O), FhG FOKUS • Participation in standardization processes • Attended W3C Technical Plenary 2004 • Comment together with HP Labs on the W3C DAWG standardization process • W3C Member Meeting at the Berliner XML Tage 2004 • IFIP – Semantic Web

  23. Network within Internet Economy

  24. Working Groups of Internet Economy • Technology-induced changes of values added systems • Modification of value chains: economic and social implications (Göttingen, Munich, Berlin) • Economic view of developments: • Intermediation • Fragmentation of value chains • Mobile services • Individualization • Conclusions on potential changes in the work environment

  25. Industrial and Academic Cooperations

  26. Industrial Cooperations • HP Labs Bristol, Nokia Finland, IHMC USA und W3C SWIG • Extension of RDF to Named Graphs • Development of a Named Graphs repository, the TriQL query language and two syntaxes for Named Graphs (TriX and TriG) • The results of this work will be included into the next W3C RDF specification • HP Labs Bristol und Palo Alto • Joined development D2R-Q, a mapping language for rewriting RDQL queries to non-RDF database specific SQL queries • Implementation as an open source extension to Jena 2 • CyberConsult Beratungsgesellschaft für Neue Medien mbH, Berlin (initial talks) • Exchange experience on technologies for job service portals, e.g. semantic matching • Atos Origin GmbH, Berlin (initial talks) • Definition of a common scenario, e.g. automotive or CGP/retail sector

  27. Academic Cooperations • Universität Essen, Yilmaz Alan • In the KOWIEN project: development of an HR ontology • Universität Leipzig, Sören Auer • Development of Semantic Web tools – RAP, pOWL • University of Madrid, Asunción Gómes-Péres • RDF-DB mapping • Esperanto-Project • Fraunhofer ISST, Andreas Billig • Human Resources experience exchange • Job Service Portal • KnowledgeWeb • EU Network of Excellence

  28. Thank you!

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