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Vita

Claus-Peter Klas is lead of the team data & service engineering in the department Knowledge Technologies for the Social Sciences of GESIS. He received his PhD computer science at the University of Duisburg-Essen and was a postdoctoral researcher in the Department of Multimedia and Internet Applications, Faculty of Mathematics and Computer Science, University of Hagen, Germany. His research focuses on information retrieval, interactive information retrieval, information systems, databases, digital libraries, preservation and grid and cloud architectures. He developed the software Daffodil founded on a nation research project and worked in national and European research projects such as The European Film Gateway, SHAMAN (Sustaining Heritage Access through Multivalent ArchiviNg) and Smart Vortex (Scalable Semantic Product Data Stream Management for Collaboration and Decision Making in Engineering).  He is currently responsible for several infrastructure projects within GESIS, such as da|ra, SowiDataNet or Missy, all concerned with providing information and data for social scientists.

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Service

Within the team architecture I am responsible for a series of data portals and service around data:

• da|ra (Registration agency for social and economic data)
• da|raSearchNet (Integrated search network for social and economic research data) & Service
• Missy (Micro data information system)
• Datorium (Selfarchiving of social science studies)
• SowiDataNet (Research data infrastructure for the social sciences and economics) & Service
• ZIS (Collection of items and scales for the social sciences)
• CESSDA Controlled Vocabulary Manager (Prototype: https://cv-dev.cessda.eu/cvmanager)
• SERISS Projektmanagement Plattform (Synergies for Europe’s Research Infrastructures in the Social Sciences)
• SERISS Knowledge Management Plattform
• SERISS Harmonization Plattform

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Research

• X-HUB (Infrastructure for multidisciplinary re-Use of experimental research data) & Service
• DDI Infrastructure
  • Questionnaire editor
  • Variable editor
  • Study editor
  • Data portal

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Publications

Publication

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Journal article

Krämer, Thomas, Claus-Peter Klas, and Brigitte Hausstein. 2018. "A data discovery index for the social sciences." Nature Scientific Data 2018 (5): 180064. doi: https://doi.org/10.1038/sdata.2018.64.

Aryani, Amir, Marta Poblet, Kathryn Unsworth, Jingbo Wang, Ben Evans, Anusuriya Devaraju, Brigitte Hausstein, Claus-Peter Klas, Benjamin Zapilko, and Samuele Kaplun. 2018. "A research graph dataset for connecting research data repositories using RD-Switchboard." Scientific Data 5. doi: https://doi.org/10.1038/sdata.2018.99.

Hopt, Oliver, Claus-Peter Klas, and Alexander Mühlbauer. 2018. "Flexible DDI storage." IASSIST Quarterly 2018 (42). doi: https://doi.org/10.29173/iq923.

Böhm, Thilo, Claus-Peter Klas, and Matthias Hemmje. 2016. "Towards a Probabilistic Model for Supporting Collaborative Information Access." Information Retrieval Journal 19 (5): 487–509. doi: https://doi.org/10.1007/s10791-016-9285-3.

Böhm, Thilo, Claus-Peter Klas, and Matthias Hemmje. 2014. "Collaborative information seeking in professional work-settings : a study of equipment utilization." Datenbank-Spektrum 14 (1): 29-38. doi: https://doi.org/10.1007/s13222-014-0145-2.

Böhm, Thilo, Claus-Peter Klas, and Matthias Hemmje. 2014. "ezDL : collaborative information seeking and retrieval in a heterogeneous environment." Computer 47 (3): 32-37. doi: https://doi.org/10.1109/MC.2013.447.

Backhausen, Daniel, Claus-Peter Klas, and Matthias Hemmje. 2011. "Adaptive Benutzerunterstützung in interaktiven Informationssuchprozessen." Datenbank-Spektrum 11 / 3 149-160. doi: https://doi.org/10.1007/s13222-011-0064-4.

Landwich, Paul, Tobias Vogel, Claus-Peter Klas, and Matthias Hemmje. 2009. "Model to support patent retrieval in the context of innovation-processes by means of dialogue and information visualisation." Electronic Journal of Knowledge Management 7 / 1 87-98. http://www.ejkm.com/volume7/issue1/p87.

Landwich, Paul, Tobias Vogel, Claus-Peter Klas, and Matthias Hemmje. 2009. "Supporting patent retrieval in the context of innovation-processes by means of information dialogue." World Patent Information : The International Journal for Industrial Property Documentation, Information, Classification and Statistics 31 / 4 315-322. doi: https://doi.org/http:/7dx.doi.org/10.1016/j.wpi.2009.04.004.

Fuhr, Norbert, Trond Aalberg, Maristella Agosti, Preben Hansen, Sarantos Kapidakis, Claus-Peter Klas, Lazlo Kovas, Monica Landoni, Andras Micsik, Christos Papatheodorou, Carol Peters, Ingeborg Solvberg, and Giannis Tsakonas. 2007. "Evaluation of digital libraries." International Journal on Digital Libraries 8 / 1 21-38. doi: https://doi.org/10.1007/s00799-007-0011-z.

Kriewel, Sascha, Claus-Peter Klas, André Schaefer, and Norbert Fuhr. 2004. "Daffodil - strategic support for user-oriented access to heterogeneous digital libraries." D-Lib Magazine 10 / 6. doi: https://doi.org/10.1045/june2004-kriewel.

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Contribution to edited volume

Krämer, Thomas, Zeljko Carevic, Dwaipayan Roy, Claus-Peter Klas, and Philipp Mayr. 2021. "ConSTR: A contextual search term recommender." In Proceedings of the ACM/IEEE Joint Conference on Digital Libraries 2021, 295-296. IEEE Computer Society. doi: https://doi.org/10.1109/JCDL52503.2021.00042. http://arxiv.org/abs/2106.04376.

Klas, Claus-Peter, and Oliver Hopt. 2018. "An operationalized DDI Infrastructure to document, publish, preserve and search social science research data." In 22nd International Conference on Theory and Practice of Digital Libraries, edited by Eva Méndez, https://doi.org/10.1007/978-3-030-00066-0_8.

Aryani, Amir, Marta Poblet, Paolo Manghi, Kathryn Unsworth, Jingbo Wang, Brigitte Hausstein, Sunje Dallmeier-Tiessen, Claus-Peter Klas, Pompeu Casanovas, and Victor Rodriguez-Doncel. 2018. "Assigning Creative Commons Licenses to Research Metadata: Issues and Cases." In AI Approaches to the Complexity of Legal Systems. AICOL 2015, AICOL 2016, AICOL 2016, AICOL 2017, AICOL 2017., edited by Ugo Pagallo, Monica Palmirani, Pompeu Casanovas, Giovanni Sartor, and Serena Villata, Lecture Notes in Computer Science vol 10791, 245-256. doi: https://doi.org/10.1007/978-3-030-00178-0_16.

Poblet, Marta, Amir Aryani, Paolo Manghi, Jingbo Wang, Brigitte Hausstein, Sunje Dallmeier-Tiessen, Claus-Peter Klas, Pompeu Casanovas, and Victor Rodriguez Doncel. 2016. "Assigning Creative Commons Licenses to Research Metadata: Issues and Cases." In 29th International Conference on Legal Knowledge and Information Systems (JURIX 2016), Nice (France) 14-16 December 2016, 1-9. https://arxiv.org/abs/1609.05700.

Aryani, Amir, Adrian Burton, Marta Poblet, Paolo Manghi, Kathryn Unsworth, Jingbo Wang, Brigitte Hausstein, Sunje Dallmeier-Tiessen, Claus-Peter Klas, and Xiaobin Shen. 2016. "Exploring Creative Commons Licenses for Scholarly Metadata Records." In SciDataCon 2016, http://www.scidatacon.org/2016/sessions/103/paper/131/.

Schmedding, Matthäus, Holger Brocks, Claus-Peter Klas, Felix Engel, Michael Fuchs, Dominic Heutelbeck, and Matthias Hemmje. 2016. "Recalot.com: Towards a Reusable, Modular, and RESTFul Social Recommender System: Demonstrator Paper." In Software Reuse: Bridging with Social-Awareness , Programming and Software Engineering 9679, 402-406. Springer International Publishing. doi: https://doi.org/10.1007/978-3-319-35122-3_28.

Böhm, Thilo, Claus-Peter Klas, and Matthias L. Hemmje. 2015. "A Probability Ranking Principle for Collaborative Search." In Collaborative Information Seeking: Best Practices, New Domains and New Thoughts, Computer Supported Cooperative Work, 167-191. Springer. doi: https://doi.org/10.1007/978-3-319-18988-8_9.

Backhausen, Daniel, Claus-Peter Klas, and Matthias L. Hemmje. 2015. "Poster: Adaptive information retrieval support for multi-session information tasks." In Research and Advanced Technology for Digital Libraries : 19th International Conference on Theory and Practice of Digital Libraries, TPDL 2015, Poznań, Poland, September 14-18, 2015, Proceedings, Lecture Notes in Computer Science 9316, 317-320. Springer. doi: https://doi.org/10.1007/978-3-319-24592-8_25.

Böhm, Thilo, Claus-Peter Klas, and Matthias L. Hemmje. 2015. "Poster: An Experimental Evaluation of Collaborative Search Result Division Strategies." In Research and Advanced Technology for Digital Libraries : 19th International Conference on Theory and Practice of Digital Libraries, TPDL 2015, Poznań, Poland, September 14-18, 2015, Proceedings, Lecture Notes in Computer Science 9316, 309-312. Springer. doi: https://doi.org/10.1007/978-3-319-24592-8_23.

Köhler, Wolfgang, Claus-Peter Klas, Daniel Backhausen, and Matthias Hemmje. 2014. "Interactive query expansion in meta search engines." In LWA 2013 - Lernen, Wissen & Adaptivität ; Workshop Proceedings Bamberg, 7.-9. Oktober 2013, edited by Andreas Henrich, and Hans-Christian Sperker, 29-32. Bamberg: opus. urn: urn:nbn:de:bvb:473-opus4-64478.

Böhm, Thilo, Claus-Peter Klas, and Matthias Hemmje. 2014. "Supporting collaborative information seeking and searching in distributed environments." In LWA 2013 - Lernen, Wissen & Adaptivität ; Workshop Proceedings Bamberg, 7.-9. Oktober 2013, edited by Andreas Henrich, and Hans-Christian Sperker, 16-23. Bamberg: opus. urn: urn:nbn:de:bvb:473-opus4-64478.

Triebel, André, Claus-Peter Klas, and Matthias L. Hemmje. 2014. "Using extended abstract tasks for evaluating visual user-interfaces." In Proceedings of the First Workshop on Knowledge Maps and Information Retrieval co-located with International Conference on Digital Libraries 2014, CEUR workshop proceedings 1311, 70-78. http://ceur-ws.org/Vol-1311/paper10.pdf.

Meiller, Dieter, Matthias Hemmje, and Claus-Peter Klas. 2012. "Aesthetic visualisation of information: optimization of graph representations." In Proceedings of the International Working Conference on Advanced Visual Interfaces : AVI 12 ; Capri Island (Naples), Italy, May 22 - 25, 2012, edited by Genny Tortora, 653-656. New York: ACM. doi: https://doi.org/http:/7dx.doi.org/10.1145/2254556.2254677.

Landwich, Paul, Claus-Peter Klas, and Matthias Hemmje. 2012. "Supporting user of information retrieval systems by visualizing the information dialog context." In Proceedings of the International Working Conference on Advanced Visual Interfaces : AVI 12 ; Capri Island (Naples), Italy, May 22 - 25, 2012, edited by Genny Tortora, 669-672. New York: ACM. doi: https://doi.org/10.1145/2254556.2254681.

Klas, Claus-Peter. 2011. "Expert evaluation methods." In User studies for digital library development, edited by Milena Dobreva, Pierluigi Feliciati, and Andy O'Dwyer, 75-84. London: Facet.

Landwich, Paul, Claus-Peter Klas, and Matthias Hemmje. 2010. "Framework for logging and exploiting the information retrieval dialog." In Research and advanced technology for digital libraries : 14th European conference, ECDL 2010, Glasgow, UK, September 6-10, 2010 ; proceedings, edited by Mounia Lalmas, Joemaon Jose, and Andreas Rauber, Lecture notes in computer science ; 6273, 470-473. Berlin: Springer. doi: https://doi.org/10.1007/978-3-642-15464-5_59.

Klas, Claus-Peter, Martin Mois, and Matthias Hemmje. 2009. "Architecture to connect tool-based web interfaces to service-oriented architectures." In WEBIST 2008 : Proceedings of the Fifth International Conference on Web Information Systems and Technologies : Lisbon, Portugal, March 23 - 26, 2009, edited by Joaquim Filipe, 329-334. Lisbon: INSTICC Press.

Klas, Claus-Peter, and Matthias Hemmje. 2009. "Catching the user : user context through live logging in DAFFODIL." In Proceedings of the SIGIR 2009 workshop on understanding the user : logging and interpreting user interactions in information search and retrieval, edited by Nicholas J. Belkin, Ralf Bierig, and Georg Buscher, CEUR Workshop Proceedings ; vol. 512, 51-52. http://eprints.rclis.org/13832/.

Mois, Martin, Claus-Peter Klas, and Matthias Hemmje. 2009. "Digital preservation as communication with the future." In DSP 2009 : 16th International Conference on Digital Signal Processing ; Santorini, Greece, 5 - 7 July 2009, 112-119. Piscataway, NJ: IEEE. doi: https://doi.org/http.//dx.doi.org/10.1109/ICDSP.2009.5201104.

Engel, Felix, Claus-Peter Klas, and Matthias Hemmje. 2009. "Relevance feedback based on context information." In Proceedings of the Information Retrieval 2009 Workshop at LWA, Darmstadt, Germany, 1-8. Darmstadt: Ges. für Informatik. http://lwa09.informatik.tu-darmstadt.de/pub/IR/WebHome/wir2009_engel_etal.pdf.

Engel, Felix, Holger Brocks, Gerald Jäschke, Claus-Peter Klas, Alfred Kranstedt, and Matthias Hemmje. 2009. "Towards supporting context-oriented information retrieval in a scientific-archive based information lifecycle." In Cultural Heritage on line : empowering users - an active role for user communities ; international conference, 15-16 December, Florence, Italy, edited by Chiara Cirinnà, and Maurizio Lunghi, 135-149. http://www.rinascimento-digitale.it/eventi/conference2009/proceedings-2009/Proceedings-part1.pdf.

Klas, Claus-Peter, Giannis Tsakonas, Hanne Albrechtsen, and Preben Hansen. 2008. "A qualitative evaluation of the European Library." In Second DELOS conference working notes : Pisa, 5-7 December 2007, edited by Costantino Thanos, Francesca Borri, and Alessandro Launaro, 1-11. Sophia Antipolis: GEIE-ERCIM, DL. doi: https://doi.org/http://hdl.handle.net/10760/15519.

Klas, Claus-Peter, Sascha Kriewel, and Matthias Hemmje. 2008. "An experimental system for adaptive services in information retrieval." In AIR 2008: second international workshop on adaptive information retrieval (AIR) ; London, United Kingdom, 18th October 2008 ; proceedings, edited by Hideo Joho, Frank Hofgartner, Joemon Jose, and C. J. van Rijsbergen, 21-24. Glasgow: Univ. of Glasgow. http://www.dcs.gla.ac.uk/workshops/air2008/proceedings.pdf.

Klas, Claus-Peter, Holger Brocks, Lars Mueller, and Matthias Hemmje. 2008. "Embedding legacy environments into a grid-based preservation infrastructure." In iPRES 2008 : proceedings of the Fifth International Conference on Preservation of Digital Objects - Joined up and working, tools and methods for digital preservation, the British Library, London, 29-30 September, London: British Library.

Landwich, Paul, Tobias Vogel, and Claus-Peter Klas. 2008. "Supporting patent retrieval in the context of innovation-processes by means of information visualisation." In ECKM 2008 : Proceedings of the 9th European Conference on Knowledge Management : Southampton Solent University, UK, 4 - 5 September, edited by Deogratias Harorimana, and David Watkins, 389-398. Reading: Academic Conferences Ltd. http://academic-conferences.org/eckm/eckm2008/eckm08-proceedings.htm.

Klas, Claus-Peter, Sascha Kriewel, and Norbert Fuhr. 2007. "An experimental framework for interactive information retrieval and digital libraries evaluation." In Digital libraries : research and development ; revised selected papers ; First International DELOS Conference, Pisa, Italy, February 13 - 14, 2007, edited by Costantino Thanos, Lecture notes in computer science ; vol. 4877, 147-156. Berlin: Springer. doi: https://doi.org/10.1007/978-3-540-77088-6_14.

Agosti, M., S. Berretti, G. Brettlecker, A. Del Bimbo, N. Ferro, N. Fuhr, D. Keim, Claus-Peter Klas, Th. Lidy, M. Norrie, P. Ranaldi, A. Rauber, H.-J. Schek, T. Schreck, H. Schuldt, B. Signer, and M. Springmann. 2007. "DELOS DLMS - the integrated DELOS digital management system." In Digital libraries : research and development ; revised selected papers ; First International DELOS Conference, Pisa, Italy, February 13 - 14, 2007, edited by Costantino Thanos, Lecture notes in computer science ; vol. 4877, 36-45. Berlin: Springer. doi: https://doi.org/10.1007/978-3-540-77088-6_4.

Hansen, Preben, and Claus-Peter Klas. 2007. "Knowledge sharing in information seeking and retrieval situations." In SIRTEL '07: 1st Workshop on Social Information Retrieval for Technology, Sissi, Lassithi, Crete Greece, 18. September, 2007-Enhanced Learning & Exchange(SIRTEL 2007), edited by Riina Vuorikari, Nikos Manouselis, Erik Duval, and Jan Van Assche, CEUR Workshop Proceedings ; vol. 307, 67-68. Aachen: CEUR. http://ceur-ws.org/Vol-307/.

Klas, Claus-Peter, Hanne Albrechtsen, Norbert Fuhr, Preben Hansen, Sarantos Kapidakis, László Kovács, Sascha Kriewel, Andras Micsik, Christos Papatheodorou, Giannis Tsakonas, and Elin Jacob. 2006. "A logging scheme for comparative digital library evaluation." In Research and advanced technology for digital libraries : 10th European conference ; proceedings / ECDL 2006, Alicante, Spain, September 17 - 22, 2006, edited by Julio Gonzalo, Lecture notes in computer science ; Vol. 4172, 267-278. Berlin: Springer. doi: https://doi.org/10.1007/11863878_23.

Klas, Claus-Peter, Norbert Fuhr, Sascha Kriewel, Hanne Albrechtsen, Giannis Tsakonas, Sarantos Kapidakis, Christos Papatheodorou, Preben Hansen, Laszlo Kovacs, Andras Micsik, and Elin Jacob. 2006. "An experimental framework for comparative digital library evaluation: the logging scheme." In JCDL '06: Proceedings of the 6th ACM/IEEE-CS joint conference on Digital libraries, 308-309. New York: ACM. doi: https://doi.org/10.1145/1141753.1141822.

Malik, Saadia, Claus-Peter Klas, Norbert Fuhr, Birger Larsen, and Anastasios Tombros. 2006. "Designing a user interface for interactive retrieval of structured documents: lessons learned from the INEX interactive track." In Research and advanced technology for digital libraries : 10th European conference ; proceedings ; ECDL 2006, Alicante, Spain, September 17 - 22, 2006, Lecture notes in computer science ; Vol. 4172, 291-302. Berlin: Springer. doi: https://doi.org/10.1007/11863878_25.

Kriewel, Sascha, Claus-Peter Klas, Sven Frankmölle, and Norbert Fuhr. 2005. "A framework for supporting common search strategies in DAFFODIL." In Research and advanced technology for digital libraries : 8th European conference ; proceedings ; ECDL 2005, Vienna, Austria, September 18 - 23, 2005, edited by Andreas Rauber, Stavros Christodoulakis, and A Min Tjoa, Lecture notes in computer science ; Vol. 3652, 527-528. Berlin: Springer. doi: https://doi.org/10.1007/11551362_66.

Schaefer, André, Matthias Jordan, Claus-Peter Klas, and Norbert Fuhr. 2005. "Active support for query formulation in virtual digital libraries: a case study with DAFFODIL." In Research and advanced technology for digital libraries : 8th European conference ; proceedings ; ECDL 2005, Vienna, Austria, September 18 - 23, 2005, edited by Andreas Rauber, Stavros Christodoulakis, and A Min Tjoa, Lecture notes in computer science ; Vol. 3652, 527-528. Berlin: Springer. doi: https://doi.org/10.1007/11551362_37.

Klas, Claus-Peter, Norbert Fuhr, Sascha Kriewel, and André Schaefer. 2005. "DAFFODIL - Nutzerorientiertes Zugangssystem fr heterogene Digitale Bibliotheken." In Leitbild Informationskompetenz : Positionen - Praxis - Perspektiven im europäischen Wissensmarkt ; 57. Jahrestagung der DGI ; proceedings ; 27. Online-Tagung der DGI, Frankfurt am Main, 23. bis 25. Mai 2005, edited by Marlies Ockenfeld, Tagungen der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis ; Bd. 7, 163-174. Frankfurt a.M.: DGI .

Klas, Claus-Peter, Sascha Kriewel, and André Schaefer. 2005. "Daffodil - Nutzerorientiertes Zugangssystem für heterogene digitale Bibliotheken." edited by Josef Wiemeyer,

Theobald, Martin, and Claus-Peter Klas. 2004. "BINGO! and Daffodil: personalized exploration of digital libraries and web sources." In Computer-assisted information retrieval (Recherche d'information et ses applications) - RIAO 2004, 7th International Conference, University of Avignon, France, April 26-28, 2004; proceedings, edited by Christian Fluhr, and Gregory Grefenstett, 347-365. Avignon: CID.

Klas, Claus-Peter, Norbert Fuhr, and André Schaefer. 2004. "Evaluating strategic support for information access in the DAFFODIL system." In and advanced technology for digital libraries : 8th European Conference, ECDL 2004, Bath, UK, September 12-17, 2004 ; proceedings, edited by Rachel Heery, and Liz Lyon, Lecture notes in computer science ; 3232. Berlin: Springer. doi: https://doi.org/10.1007/978-3-540-30230-8_43.

Fuhr, Norbert, André Schaefer, Claus-Peter Klas, and Peter Mutschke. 2002. "Daffodil: an integrated desktop for supporting high-level search activities in Federated Digital Libraries." In Research and Advanced Technology for Digital Libraries: 6th European Conference, ECDL 2002, Rome, Italy, September 16-18, 2002; Proceedings, edited by Maristella Agosti, and Costantino Thanos, Lecture Notes in Computer Science 2458, 597-612. Berlin: Springer. doi: https://doi.org/10.1007/3-540-45747-X_45.

Fuhr, Norbert, Claus-Peter Klas, André Schaefer, and Peter Mutschke. 2002. "Daffodil: an integrated desktop for supporting high-level search activities in Federated Digital Libraries." edited by Maristella Agosti, and Costantino Thanos, Lecture notes in computer science ; 2458, 597-612. Berlin: Springer. doi: https://doi.org/10.1007/3-540-45747-X_45.

Fuhr, Norbert, and Claus-Peter Klas. 2001. "Combining RDF and agent-based architectures for semantic interoperability in digital libraries." In Proceedings of the Third DELOS Network of Excellence Workshop on Interoperability and Mediation in Heterogeneous Digital Libraries, Darmstadt, Germany, 8-9 September 2001, ERCIM. http://www.ercim.eu/publication/ws-proceedings/DelNoe03/1.pdf.

Klas, Claus-Peter. 2000. "A new effective approach for categorizing web documents." In Proceedings of the BCS-IRSG 22nd Annual Colloquium on Information Retrieval Research, Sidney Sussex Colleg, Cambridge, England, 5-7 April 2000, London: British Computer Society.

Fuhr, Norbert, Norbert Gövert, and Claus-Peter Klas. 2000. "An agent-based architecture for supporting high-level search activities in Federated Digital Libraries." In Challenging to knowledge exploring for new millennium, ICADL 2000 : the proceedings of the 3rd International Conference of Asian Digital Library & the 3rd Conference on Digital Libraries, Korea, December 6-8, 2000, Seoul Education & Culture Center, Seoul, Korea, edited by Han'guk Kwahak Kisurwŏn, 247-254. Seoul: Organizing Committee of the ICADL.

Gövert, Norbert, Norbert Fuhr, and Claus-Peter Klas. 2000. "Daffodil: distributed agents for user-friendly access of Digital Libraries." In Research and advanced technology for digital libraries : 4th European conference ; proceedings ; ECDL 2000, Lisbon, Portugal, September 18-20, 2000 Proceedings, edited by José Borbinha, and Thomas Baker, Lecture notes in computer science; vol. 1923, 352-355. Berlin: Springer. doi: https://doi.org/10.1007/3-540-45268-0_38.

Klas, Claus-Peter. 1999. "Ein neuer, effektiver Ansatz zur Kategorisierung von Web Dokumenten." In Workshop der Fachgruppe Datenbanksystem der GI Agenten, Datenbanken und Information Retrieval in Rostock-Warnemünde, http://dbis.informatik.uni-rostock.de/lehrstuhl/workshops/adi99/.

Embley, David W., Norbert Fuhr, Claus-Peter Klas, and Thomas Rölleke. 1999. "Ontology suitability for uncertain extraction of information from multi-record web documents." In GI-Workshop Agenten, Datenbanken und Information Retrieval (ADI 99), 30. September 1999, Warnemünde, Deutschland., Datenbank Rundbrief ; 24 -11-1999, 48-53.

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Editorship

Hansen, Preben, Chirag Shah, and Claus-Peter Klas, ed. 2015 (Forthcoming). Collaborative Information Seeking: Best Practices, New Domains and New Thoughts. Computer Supported Cooperative Work. Springer. doi: https://doi.org/10.1007/978-3-319-18988-8.

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Monograph

Trevisol, Oliver, Jutta Dübert, Thorsten Eisenmenger, Claus-Peter Klas, Annete Kustos, Reinhold Kühnle, Christian Pietsch, Martin Roos, Christoph Spiekerand Gerlind Storch, and Barbara Witt. 2008. Informationskompetenz für Psychologinnen und Psychologen. Einführung in das wissenschaftliche Arbeiten ; 2 : Kultur- und Sozialwissenschaften. Hagen: Fernuniv., Fak. für Kultur- und Sozialwiss..

Klas, Claus-Peter. 2007. Daffodil: strategische Unterstützung bei der Informationssuche in digitalen Bibliotheken: Dissertation. Duisburg: Univ. Duisburg-Essen. doi: https://doi.org/http://duepublico.uni-duisburg-essen.de/servlets/DocumentServlet?id=16136.

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Working and discussion paper

Klas, Claus-Peter, Matthäus Zloch, Janete Saldanha Bach, Erdal Baran, and Peter Mutschke. 2022. KonsortSWD Measure 5.1: PID Service for variables report. doi: https://doi.org/10.5281/zenodo.6397367.

Dirk, Betz, Claudia Biniossek, Harald Wypior, Claus-Peter Klas, and Narges Tavakolpoursaleh. 2022. Metadata Schema x-econ Repository. Working paper series 2/2022. Otto-von-Guericke-Universität Magdeburg Fakultät für Wirtschaftswissenschaft. https://www.fww.ovgu.de/fww_media/femm/femm_2022/2022_02.pdf.

Fuhr, Norbert, Claus-Peter Klas, Mounia Lalmas, and Carol Peters. 2006. Progress Report I on DL Evaluation. Delos Deliverable D7.4.2.. Duisburg: University of Duisburg-Essen,. http://www.is.informatik.uni-duisburg.de/bib/pdf/ir/Fuhr_etal_06a.pdf.

Fuhr, Norbert, Norbert Gövert, and Claus-Peter Klas. 2001. Recommendation in a collaborative digital library environment. Technical report, University of Dortmund, Computer Science. Dortmund: Univ. Dortmund, Computer Science.

Braschler, Martin, Norbert Gövert, and Claus-Peter Klas. 2000. Test results (Multilingual searching component, categorisation tool). Technical report, University of Dortmund, Computer Science. Dortmund: Univ. Dortmund, Computer Science.

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Data/Software

Zhang, Yudong, Erdal Baran, Matthäus Zloch, Alexander Mühlbauer, Peter Mutschke, and Claus-Peter Klas. 2022. KonsortSWD PID Registrator. doi: https://doi.org/10.5281/zenodo.5914219.

Hausstein, Brigitte, Amir Aryani, Marta Poblet, Kathryn Unsworth, Jingbo Wang, Ben Evans, Anusuriya Devaraju, Claus-Peter Klas, Benjamin Zapilko, and Samuele Kaplun. 2018. Input Data: Connections between research data and other scholarly works, formed as a Research Graph database by RD-Switchboard. doi: https://doi.org/10.4225/03/58748eba531cf.

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Other article

Biniossek, Claudia, Harald Wypior, Dirk Betz, Narges Tavakolpoursaleh, and Claus-Peter Klas. 2022. "x-science Metadata Schema." doi: https://doi.org/10.5281/zenodo.5810914.

Wolf, Christof, Maja Adena, Christian Aßmann, Doris Bambey, Katarina Blask, Andreas Blätte, Michael Bosnjak, Daniel Buck, Mathias Bug, Anja Busch, Anna Fräßdorf, Daniel Fuß, Jan Goebel, Betina Hollstein, Monika Jungbauer-Gans, Dagmar Kern, Claus-Peter Klas, Susanne Kretzer, Stefan Liebig, Nicole Mayer-Ahuja, Bernhard Miller, Peter Mutschke, Anja Perry, Regina T. Riphahn, Marc Rittberger, Daniel Schiffner, Silke Schneider, Jürgen Schupp, Pascal Siegers, Ranjit K. Singh, Heike Solga, Klaus Tochtermann, Ralf Toepfer, and Susanne Zindler. 2020. "Consortium for the Social, Behavioural, Educational, and Economic Sciences (KonsortSWD)." doi: https://doi.org/10.5281/zenodo.3968372.

Lecture

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Conference contribution

Klas, Claus-Peter, Benjamin Zapilko, and Janete Saldanha Bach. 2022. "A controlled vocabulary for a social science knowledge graph: better definition of relationships." European DDI User Conference 2022 , Sciences Po, Rue des Saint-Pères, Paris, 2022-11-30. doi: https://doi.org/10.5281/zenodo.7389936. https://eddi22.sciencesconf.org/425548.

Klas, Claus-Peter, and Oliver Hopt. 2022. "DDI Variable Documentation and data access using R." 14th Annual European DDI User Conference (EDDI 2022), SciencePo, Paris, France, 2022-11-28.

Saldanha Bach Estevao, Janete, Claus-Peter Klas, and Peter Mutschke. 2022. "Enhancing PID services towards a more fine-grained granularity level as a base for a FAIR data infrastructure (Poster)." International Data Week 2022 (IDW2022) / RDA 19th Plenary, Online, 2022-06-21. https://zenodo.org/record/6760992#.YrnJ2nZBxnI.

Klas, Claus-Peter, Thomas Krämer, Sigit Nugraha, and Oliver Hopt. 2022. "Experiences with converting DDI among versions using DDI-FlatDB: From Documentation to Search for Questions for Service Provider using DDI." IASSIST 2022, 7-10 June, Gothenburg, Online, 2022-06-07.

Saldanha Bach, Janete, Peter Mutschke, and Claus-Peter Klas. 2022. "PID Registration Service Demo Application (video)." ACM/IEEE Joint Conference on Digital Libraries 2022, Online. https://www.youtube.com/watch?v=fm8T-hlhsXg.

Krämer, Thomas, Esra Akdeniz, Claus-Peter Klas, Alexander Mühlbauer, Oliver Hopt, and Martin Friedrichs. 2021. "DDI Search: The missing link between researcher and repository." European DDI User Conference 2021, Online, 2021-11-30. doi: https://doi.org/10.5281/zenodo.5747138.

Klas, Claus-Peter. 2021. "From Documentation to Search for Questions for Small Service Provider in DDI." European DDI User Conference - EDDI 2021 – Paris, France. doi: https://doi.org/10.5281/zenodo.5743673.

Klas, Claus-Peter, and Knut Wenzig. 2021. "Transform legacy study, question, and variable documentation into DDI 3.2 LifeCycle." European DDI User Conference - EDDI 2021 – Paris, France. doi: https://doi.org/10.5281/zenodo.5726243.

Abdulahhad, Karam, and Claus-Peter Klas. 2020. "ExploreData to Search, Access, and Recommend Social Sciences Surveys Metadata." EDDI20 – 12th Annual European DDI User Conference, Virtuell, 2020-12-01.

Klas, Claus-Peter, Oliver Hopt, and Sigit Nugraha. 2019. "DDI based Questionnaire Editor." EDDI19 – 11th Annual European DDI User Conference, Finnish Social Science Data Archive, 2019-12-02.

Zapilko, Benjamin, Tanja Friedrich, Behnam Ghavimi, Stefan Jakowatz, Reiner Mauer, Thomas Müller, Sigit Nugraha, and Claus-Peter Klas. 2019. "Towards maintenance and publication of thesauri in controlled vocabulary manager systems." 11th Annual European DDI User Conference, 3. - 4. Dezember 2019, 2019-12-03.

Klas, Claus-Peter, and Oliver Hopt. 2018. "Envisioned Architecture for Empirical Survey Documentation Based on DDI-FlatDB." EDDI18 – 10th Annual European DDI User Conference, 2018-12-04.

Abdulahhad, Karam, and Claus-Peter Klas. 2018. "Indexing DDI with ElasticSearch: The ExploreData Project." EDDI18 – 10th Annual European DDI User Conference, 2018-12-05.

Nugraha, Sigit, and Claus-Peter Klas. 2018. "The CESSDA Controlled Vocabular Manager Using DDI-FlatDB." EDDI18 – 10th Annual European DDI User Conference, 2018-12-04.

Brislinger, Evelyn, Dafina Kurti, Masoud Davari, Quandt Markus, and Claus-Peter Klas. 2018. "Trialling a new Survey Project management Portal on the European Values Study 2017." ESRC Research Methods Festival 2018 , 2018-07-05.

Hopt, Oliver, Claus-Peter Klas, and Alexander Mühlbauer. 2017. "DDI-FlatDB: Next steps." EDDI17 – 9th Annual European DDI User Conference. http://www.eddi-conferences.eu/ocs/index.php/eddi/eddi17/paper/view/301.

Hopt, Oliver, Claus-Peter Klas, Wolfgang Zenk-Möltgen, and Alexander Mühlbauer. 2017. "Efficient and Flexible DDI handling for the development of multiple Applications." IASSIST 2017 - Data in the Middle: The common language of research, 2017-05-24.

Hopt, Oliver, Claus-Peter Klas, and Alexander Mühlbauer. 2017. "Lessons Learned with Additional Mappings into DDI-FlatDB." EDDI17 – 9th Annual European DDI User Conference. http://www.eddi-conferences.eu/ocs/index.php/eddi/eddi17/paper/view/300.

Hausstein, Brigitte, Thomas Krämer, Karoline Harzenetter, Ute Koch, Jana Meichsner, and Claus-Peter Klas. 2016. "Knocking on data repositories’ doors - Die Entwicklung eines Suchdienstes für sozialwissenschaftliche Daten." RDA Deutschland Treffen GFZ Potsdam 28-29 November 2016, 2016-11-29. http://os.helmholtz.de/fileadmin/user_upload/os.helmholtz.de/Workshops/rda_de_16_hausstein.pdf.

Hausstein, Brigitte, Thomas Krämer, Karoline Harzenetter, Ute Koch, Jana Meichsner, and Claus-Peter Klas. 2016. "Knocking on data repositories’ doors - How to build an integrated search index for social and economic data ." Digital Infrastructures for Research 2016: Krakow 28-30 September 2016. http://www.digitalinfrastructures.eu/content/knocking-data-repositories%E2%80%99-doors-how-build-integrated-search-index-social-and-economic-data.

Hopt, Oliver, Claus-Peter Klas, Alexander Mühlbauer, and Wolfgang Zenk-Möltgen. 2016. "Rich Metadata from the Start: QMD for the use case of GLES." EDDI16 – 8th Annual European DDI User Conference. http://www.eddi-conferences.eu/ocs/index.php/eddi/eddi16/paper/view/277.

Hausstein, Brigitte, and Claus-Peter Klas. 2015. "da|ra and Data-PASS Interoperability Project: RDA-Working Group: Data Description Registry Interoperability (DDRI)." RDA Fifth Plenary Meeting .

Klas, Claus-Peter, Oliver Hopt, Wolfgang Zenk-Möltgen, and Alexander Mühlbauer. 2015. "DDI - FlatDB: Efficient Access to DDI." EDDI15 – 7th Annual European DDI User Conference.

Blumenberg, Manuela S., Wolfgang Zenk-Möltgen, and Claus-Peter Klas. 2015. "Implementing DDI-Lifecycle for Data Collection within the German GLES project." EDDI15 – 7th Annual European DDI User Conference.

Hausstein, Brigitte, and Claus-Peter Klas. 2015. "Toward Connecting Social Science Data: WG Data Description Registry Interoperability (DDRI): Interoperability Between Research Data Registries." RDA Sixth Plenary Meeting "Enterprise Engagement with a focus on Research Data for Climate Change", 2015-09-23.

Klas, Claus-Peter, and Peter Mutschke. 2015. "Usefulness of interactive IR systems." Workshop Proposal for CHIIR 2016.

Klas, Claus-Peter. 2010. "How to secure digital preservation resources, solutions, services, infrastructures in the Information Society?" ICT Day 2010 - “Digitally driven”.

Klas, Claus-Peter, Martin Mois, and Matthias Hemmje. 2009. "Communication with the future." DSP 2009 : 16th Digital Signal Processing workshop, Santorini, Greece.

Klas, Claus-Peter, Paul Landwich, and Matthias Hemmje. 2008. "Context aware interactive information retrieval." Adaptive Information Retrieval Workshop.

Klas, Claus-Peter, Holger Brocks, Lars Mueller, and Matthias Hemmje. 2008. "Embedding legacy environments into a grid-based preservation infrastructure." iPRES 2008: Fifth international conference on preservation of digital objects.

Landwich, Paul, Tobias Vogel, Claus-Peter Klas, and Matthias Hemmje. 2007. "Supporting Patent Retrieval in the Context of Innovation-Processes by Means of Information Visualisation." IRF Symposium 2007.

Klas, Claus-Peter, and Sascha Kriewel. 2006. "An experimental framework for comparative digital library evaluation." 6th ACM/IEEE-CS joint conference on Digital libraries.

Klas, Claus-Peter. 2005. "DAFFODIL: Nutzerorientiertes Zugangssystem für heterogene Digitalen Bibliotheken." 27. Online-Tagung der DGI 2005 : 57. Jahrestagung der DGI Leitbild Informationskompetenz: Positionen - Praxis - Perspektiven im europäischen Wissensmarkt.

Klas, Claus-Peter. 2004. "DAFFODIL: Strategic support evaluated." ECDL 2004: European Conference on Digital Libraries.

Klas, Claus-Peter. 2004. "DELOS WP7: Evaluation." Delos Information Day at ECDL 2004 in Bath, UK.

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Contribution not at conference

Saldanha Bach, Janete, Claus-Peter Klas, and Peter Mutschke. 2022. "Application of ‘RDA FAIR Data Maturity Model’ to assess the PID registration service in terms of FAIRness ." CESSDA Metadata Office: Webinar on user experience with FAIR evaluation tools and services, Online, 2022-10-11. doi: https://doi.org/10.5281/zenodo.7409651.

Saldanha Bach, Janete, Claus-Peter Klas, and Peter Mutschke. 2022. "Benefits of persistent identifiers (PIDs) for dataset elements." Forum Data Publication and Availability #5: Persistent Identifiers, Online, 2022-11-17. doi: https://doi.org/10.5281/zenodo.7389544.

Saldanha Bach, Janete, Claus-Peter Klas, and Peter Mutschke. 2022. "Breaking down hurdles of current data citation practices : Use cases and benefits of persistent identifiers for dataset elements." NFDI Science Slam at Berlin Science Week 2022 , Fraunhofer-Institut für Offene Kommunikationssysteme FOKUS, Berlin, 2022-11-07. doi: https://doi.org/10.5281/zenodo.7389291. https://youtube.com/playlist?list=PL766zD6HYeC8Fz10mUAHxCVAfwLqky3MT.

Klas, Claus-Peter. 2019. "CESSDA Vocabulary Manager." Semantic Interoperability of Metadata for Cross-Domain Research of the Future, GO FAIR International Support and Coordination Office, 2019-11-11.

Brislinger, Evelyn, Dafina Kurti, Masoud Davari, Markus Quandt, and Claus-Peter Klas. 2019. "Survey Project Management Platform SMaP - Current status." 5th Meeting of SERISS Board of Strategic Advice, City University of London, 2019-04-25.

Brislinger, Evelyn, Dafina Kurti, Masoud Davari, Markus Quandt, and Claus-Peter Klas. 2017. "The myEVS portal for the EVS 2017 Survey." EVS-Workshop, 2017-05-04.

Teaching

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Other

Klas, Claus-Peter. 2015. "Collaborative Information Seeking: Autumn School 2015 for Information Retrieval and Information Foraging." Katlenburg.

Landwich, Paul, Claus-Peter Klas, and Matthias Hemmje. 2009. "Catching the user - logging the information retrieval dialogue." Boston.

Klas, Claus-Peter, Sascha Kriewel, André Schaefer, and Gudrun Fischer. 2005. "Das Daffodil System - Strategische Literaturrecherche in Digitale Bibliotheken." Hildesheim.

Other

Klas, Claus-Peter, and Matthias Hemmje. 2009. "Context aware interactive information retrieval." Talk at the Dagstuhl seminar on Interactive Information Retrieval.

Klas, Claus-Peter. 2009. "Context aware interactive information retrieval." University of Glasgow, Information Retrieval Group of Keith van Rijsbergen, UK.

Klas, Claus-Peter. 2007. "Digital Libraries: HOW TO place the users in the center!" Talk at the L3S Hannover.

Klas, Claus-Peter. 2004. "Daffodil: Digitale Bibliotheken im Wandel." FIZ Karlsruhe.

Klas, Claus-Peter. 2004. "DAFFODIL: search and browse in distributed Digital Libraries." V3D2 DFG closing workshop.

Klas, Claus-Peter. 2004. "DAFFODIL: Zugangssystem zu digitalen Informatik-Bibliotheken." Special Group (Germany) Information Retrieval Meeting.

Klas, Claus-Peter, and Norbert Fuhr. 2003. "DAFFODIL: Grundlegende Konzepte & die Wrapper." OFFIS - Oldenburger Forschungs- und Entwicklungsinstitut für Informatik.

Klas, Claus-Peter, Norbert Gövert, and Norbert Fuhr. 1999. "Distributed agents for user-friendly access of Digital Libraries."

Klas, Claus-Peter. 1998. "Effiziente Prozessierung interner und externer Relationen mit HySpirit: Diplomrbeit."

Expertise and review

Klas, Claus-Peter. 2019. "ACM SIGIR Conference on Human Information Interaction and Retrieval (CHIIR)." Anzahl: 4.

Klas, Claus-Peter. 2018. " Lernen. Wissen. Daten. Analysen. (LWDA 2018) August 22-24, Mannheim ." Anzahl: 3.

Klas, Claus-Peter. 2018. "ACM/IEEE Joint Conference on Digital Libraries 2018." Anzahl: 2.

Klas, Claus-Peter. 2018. "FDIA 2018 (Future Directions in Information Access)." Anzahl: 1.

Klas, Claus-Peter. 2018. "Third ACM SIGIR Conference on Human Information Interaction and Retrieval." Anzahl: 6.

Klas, Claus-Peter. 2018. "TPDL2018- 22nd International Conference on Theory and Practice of Digital Libraries, September 10-13, 2018, Porto, Portugal." Anzahl: 3.

Klas, Claus-Peter. 2017. "2017 ACM/IEEE Joint Conference on Digital Libraries (JCDL)." Anzahl: 4.

Klas, Claus-Peter. 2017. "21st International Conference on Theory & Practice of Digital Libraries." Anzahl: 4.

Klas, Claus-Peter. 2017. "The Second ACM SIGIR Conference on Information Interaction and Retrieval (CHIIR 2017)." Anzahl: 4.

Klas, Claus-Peter. 2016. "1st ACM SIGIR Conference on Human Information Interaction and Retrieval (CHIIR)." Anzahl: 2.

Klas, Claus-Peter. 2016. "20th International Conference on Theory and Practice of Digital Libraries Home Contact Sponsors News Legal notice." Anzahl: 3.

Klas, Claus-Peter. 2016. "International Conference on Asian Digital Libraries." Anzahl: 4.

Klas, Claus-Peter. 2016. "Joint Conference on Digital Libraries (JCDL)." Anzahl: 4.

Klas, Claus-Peter. 2015. "19th International Conference on Theory and Practice of Digital Libraries." Anzahl: 4.

Klas, Claus-Peter. 2015. "5th International Conference on Cloud Computing and Services Science." Anzahl: 3.

Klas, Claus-Peter. 2015. "Asian Digital Library Conference." Anzahl: 3.

Klas, Claus-Peter. 2015. "Joint Conference on Digital Libraries." Anzahl: 6.

Klas, Claus-Peter. 2015. "PeerJ Computer Science." Anzahl: 1.

Klas, Claus-Peter. 2014. "Gutachten für 'International Journal of Digital Libraries'." Anzahl: 1.

Klas, Claus-Peter. 2014. "Gutachten für 4th International Conference on Cloud Computing and Services Science." Anzahl: 3.

Klas, Claus-Peter. 2014. "Gutachten für 4th International Workshop on Semantic Digital Archives." Anzahl: 1.

Klas, Claus-Peter. 2014. "Gutachten für International Conference on Knowledge Discovery and Information Retrieval." Anzahl: 3.

Klas, Claus-Peter. 2014. "Gutachten für KMIR Workshop." Anzahl: 2.

Klas, Claus-Peter. 2014. "Gutachten für Konferenz Digital Libraries, London." Anzahl: 3.

Organisation

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Event

Mutschke, Peter, Yann Le Franc, Claus-Peter Klas, Barbara Magagna, Andrea Scharnhorst, and Daniel Schiffner. 2020. "FAIR Digital Objects for Cross-domain Data Searching & Linking and Semantic Interoperability." International FAIR Convergence Symposium 2020 (GO FAIR, CODATA) , 2020-12-01 - 2020-12-01. https://conference.codata.org/FAIRconvergence2020/sessions/223/.

Klas, Claus-Peter. 2019. "Lernen, Wissen, Daten, Analysen LWDA 2019." Humboldt-Universität zu Berlin (online), Munich, 2019-09-30 - 2019-10-02.

Klas, Claus-Peter. 2018. "Lernen, Wissen, Daten, Analysen LWDA 2018." Universität Mannheim, Mannheim, 2018-08-22 - 2018-08-24.

Klas, Claus-Peter. 2017. "Dagstuhl Seminar: Search as Learning." Dagstuhl, 1027-02-26 - 2017-03-01. http://www.dagstuhl.de/de/programm/kalender/semhp/?semnr=17092.

Klas, Claus-Peter. 2017. "Lernen, Wissen, Daten, Analysen LWDA 2017." Lernen, Wissen, Daten, Analysen LWDA 2017, 2017-09-11 - 2017-09-13.

Klas, Claus-Peter. 2016. "Lernen. Wissen. Daten. Analysen. (LWDA 2016)." Potsdam, 2016-09-12 - 2016-09-14.

Mutschke, Peter, Claus-Peter Klas, Preben Hansen, and Leif Azzopardi. 2016. "Usefulness of interactive IR systems." Workshop at ACM SIGIR Conference on Human Information Interaction and Retrieval (CHIIR), 2016-03-17.

Klas, Claus-Peter. 2015. "Lernen, Wissen, Adaption: Workshop der Facgruppe Information Retrieval der GI." Trier, 2015-10-07 - 2015-10-09.

Klas, Claus-Peter, and Sascha Kriewel. 2014. "Programm Chair." LWA FG-IR, Aachen. http://dme.rwth-aachen.de/en/lwa2014.

Klas, Claus-Peter. 2014. "Tutorial Chair - Digital Libraries 2014." London. http://dl2014.org/.