Prof. Dr. Christian Bizer

Chair of Information Systems V: Web-based Systems
Director of the Institute of Computer Science and Business Informatics

Universität Mannheim
B6, 26, Room B 1.15
D-68131 Mannheim

Email:  chris (at) informatik.uni-mannheim.de 
Phone: +49 621 181 2677

Consultation hour: Wednesday, 13:30-14:30

Research

Overview

Christian Bizer explores technical and empirical questions concerning the development of global, decentralized information environments. His current research focus is the evolution of the World Wide Web from a medium for the publication of documents into a global dataspace. Christian Bizer initialized the W3C Linking Open Data community effort which is interlinking large numbers of data sources on the Web. He co-founded the DBpedia project which derives a comprehensive knowledge base from Wikipedia. He also initialized the WebDataCommons project which monitors the adoption of schema.org, RDFa, Microdata, and Microformats on the Web by analysing large Web crawls. His technical research focuses on the integration of data from large numbers of Web data sources and includes topics such as information extraction, identity resolution, schema matching, data fusion, and data search. Christian Bizer holds an appointment as full professor at the University of Mannheim, where he leads the Focus Group Web-based Systems of the Data and Web Science Group. Before moving to Mannheim, he headed the Web-based Systems Group at Freie Universität Berlin.

Research Interests

  • Large-scale data integration
  • Identity resolution, schema matching, data fusion, data search
  • Information extraction from semi-structured sources
  • Analysis of the adoption of semantic web technologies
  • Knowledge base construction

Publications 

Google Scholar gives an idea which of my papers are highly cited.  DBLP maintains another list of my publications.

  • Kleppmann, B., Bizer, C., Yaqub, E., Temme, F., Schlunder, P., Arnu, D. and Klinkenberg, R. (2018). Density- and correlation-based table extension. In Gemulla, R., LWDA 2018 : Proceedings of the Conference „Lernen, Wissen, Daten, Analysen“ Mannheim, Germany, August 22-24, 2018 (S. 191-194). CEUR Workshop Proceedings, RWTH: Aachen.
  • Lehmann, J., Auer, S., Capadisli, S., Janowicz, K., Bizer, C., Heath, T., Hogan, A. and Berners-Lee, T. (2017). LDOW2017: 10th Workshop on Linked Data on the Web. In Barrett, R., WWW '17 Companion Proceedings of the 26th International Conference on World Wide Web Companion (S. 1679-1680). , International World Wide Web Conferences Steering Committee: Geneva.
  • Lehmberg, O., Brinkmann, A. and Bizer, C. (2017). WInte.r - a web data integration framework. In Nikitina, N., ISWC-P&D-Industry 2017 : Proceedings of the ISWC 2017 Posters & Demonstrations and Industry Tracks co-located with 16th International Semantic Web Conference (ISWC 2017) Vienna, Austria, October 23rd to 25th, 2017 (S. Paper 506). CEUR Workshop Proceedings, RWTH: Aachen.
  • Oulabi, Y. and Bizer, C. (2017). Estimating missing temporal meta-information using Knowledge-Based-Trust. In Armano, G., KDWEB 2017 : proceedings of the 3rd International Workshop on Knowledge Discovery on the WEB Cagliari, Italy, September 11 to 12, 2017 (S. Paper 4). CEUR Workshop Proceedings, RWTH: Aachen.
  • Petrovski, P. and Bizer, C. (2017). Extracting attribute-value pairs from product specifications on the web. In Sheth, A., WI '17 Proceedings of the International Conference on Web Intelligence : Leipzig, Germany, August 23-26, 2017 (S. 558-565). , ACM: New York, NY [u.a.].
  • Petrovski, P., Primpeli, A., Meusel, R. and Bizer, C. (2017). The WDC gold standards for product feature extraction and product matching. In Bridge, D., E-Commerce and Web Technologies : 17th International Conference, EC-Web 2016, Porto, Portugal, September 5-8, 2016, Revised Selected Papers (S. 73-86). Lecture Notes in Business Information Processing, Springer: Cham.
  • Primpeli, A. and Bizer, C. (2017). Generalizing matching knowledge using active learning. In Christen, P., VLDB-PhD 2017 : Proceedings of the VLDB 2017 PhD Workshop co-located with the 43rd International Conference on Very Large Databases (VLDB 2017) Munich, Germany, August 28, 2017 (S. 29-32). CEUR Workshop Proceedings, RWTH: Aachen.
  • Primpeli, A., Meusel, R., Bizer, C. and Stuckenschmidt, H. (2017). The Web Data Commons structured data extraction. In , E-Science-Tage 2017: Forschungs­daten managen (S. 1). , Heidelberg University: Heidelberg.
  • Ritze, D. and Bizer, C. (2017). Matching web tables to DBpedia - a feature utility study. In Markl, V., Proceedings of the 20th International Conference on Extending Database Technology, EDBT 2017, Venice, Italy, March 21-24, 2017 (S. 210-221). , OpenProceedings: Konstanz.
  • Auer, S., Heath, T., Bizer, C. and Berners-Lee, T. (2016). LDOW2016: 9th Workshop on Linked Data on the Web. In Bourdeau, J., Proceedings of the 25th International Conference on World Wide Web, WWW 2016, Montreal, Canada, April 11-15, 2016, Companion Volume (S. 1039-1040). , ACM: Geneva, Switzerland.
  • Bryl, V., Bizer, C. and Paulheim, H. (2016). Gathering alternative surface forms for DBpedia entities. In Paulheim, H., NLP & DBpedia 2015 : Proceedings of the Third NLP&DBpedia Workshop (NLP & DBpedia 2015) co-located with the 14th International Semantic Web Conference 2015 (ISWC 2015) Bethlehem, Pennsylvania, USA, October 11, 2015 (S. 13-24). CEUR Workshop Proceedings, RWTH: Aachen.
  • Faralli, S., Bizer, C., Eckert, K., Meusel, R. and Ponzetto, S. P. (2016). A Web application to search a large repository of taxonomic relations from the Web. In Kawamura, T., ISWC-P&D 2016 : Proceedings of the ISWC 2016 Posters & Demonstrations Track co-located with 15th International Semantic Web Conference (ISWC 2016) Kobe, Japan, October 19, 2016 (S. Paper 58). CEUR Workshop Proceedings, RWTH: Aachen.
  • Gentile, A. L., Kirstein, S., Paulheim, H. and Bizer, C. (2016). Extending RapidMiner with data search and integration capabilities. In Sack, H., The Semantic Web : ESWC 2016 Satellite Events, Heraklion, Crete, Greece, May 29 – June 2, 2016, Revised Selected Papers (S. 161-171). Lecture Notes in Computer Science, Springer: Cham.
  • Lehmberg, O. and Bizer, C. (2016). Web table column categorisation and profiling. In , WebDB '16 : Proceedings of the 19th International Workshop on Web and Databases, San Francisco, CA, USA, June 26, 2016 : co-located with ACM SIGMOD 2016 (S. Article 4, 1-7). , ACM: New York, NY.
  • Lehmberg, O., Ritze, D., Meusel, R. and Bizer, C. (2016). A large public corpus of web tables containing time and context metadata. In Bourdeau, J., WWW '16 Companion : Proceedings of the 25th International Conference Companion on World Wide Web : Montreal, Canada, April 11 - 15, 2016 (S. 75-76). , ACM: New York, NY.
  • Oulabi, Y., Meusel, R. and Bizer, C. (2016). Fusing time-dependent web table data. In , WebDB '16 : Proceedings of the 19th International Workshop on Web and Databases, San Francisco, CA, USA, June 26, 2016 : co-located with ACM SIGMOD 2016 (S. Article 3, 1-7). , ACM: New York, NY.
  • Ritze, D., Lehmberg, O., Oulabi, Y. and Bizer, C. (2016). Profiling the potential of web tables for augmenting cross-domain knowledge bases. In Bourdeau, J., Proceedings of the 25th International Conference on World Wide Web, WWW 2016, Montreal, Canada, April 11 - 15, 2016 (S. 251-261). , ACM: Geneva, Switzerland.
  • Seitner, J., Bizer, C., Eckert, K., Faralli, S., Meusel, R., Paulheim, H. and Ponzetto, S. P. (2016). A large DataBase of hypernymy relations extracted from the Web. In Calzolari, N., Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC 2016) : May 23-28, 2016, Portorož, Slovenia (S. 360-367). , European Language Resources Association, ELRA-ELDA: Paris.
  • Meusel, R., Bizer, C. and Paulheim, H. (2015). A web-scale study of the adoption and evolution of the schema.org vocabulary over time. In Akerkar, R., Proceedings of the 5th International Conference on Web Intelligence, Mining and Semantics, WIMS 2015, Larnaca, Cyprus, July 13-15, 2015 (S. Article 15, 1-11). , ACM: New York, NY.
  • Meusel, R., Primpeli, A., Meilicke, C., Paulheim, H. and Bizer, C. (2015). Exploiting microdata annotations to consistently categorize product offers at web scale. In Stuckenschmidt, H., E-Commerce and Web Technologies : 16th International Conference on Electronic Commerce and Web Technologies, EC-Web 2015, Valencia, Spain, September 2015, revised selected papers (S. 83-99). Lecture Notes in Business Information Processing, Springer International Publishing : Cham.
  • Meusel, R., Spahiu, B., Bizer, C. and Paulheim, H. (2015). Towards automatic topical classification of LOD datasets. In Bizer, C., LDOW 2015 : Proceedings of the Workshop on Linked Data on the Web ; co-located with the 24th International World Wide Web Conference (WWW 2015) ; Florence, Italy, May 19th, 2015 (S. Paper 03). CEUR Workshop Proceedings, RWTH: Aachen.
  • Ritze, D., Lehmberg, O. and Bizer, C. (2015). Matching HTML tables to DBpedia. In Akerkar, R., Proceedings of the 5th International Conference on Web Intelligence, Mining and Semantics, WIMS 2015, Larnaca, Cyprus, July 13-15, 2015 (S. Paper 10, 1-6). , ACM: New York, NY.
  • (2014). LDOW 2014 : Proceedings of the Workshop on Linked Data on the Web co-located with the 23rd International World Wide Web Conference (WWW 2014); Seoul, Korea, April 8, 2014. In , (S. ). CEUR Workshop Proceedings, RWTH: Aachen.
  • Bizer, C. (2014). Search Joins with the Web. In Schweikardt, N., Database Theory - ICDT 2014 : 17th International Conference on Database Theory, Athens, Greece, March 24-28, 2014; Proceedings (S. 3). , Univ. Konstanz, Univ. Library: Konstanz.
  • Bryl, V. and Bizer, C. (2014). Learning Conflict Resolution Strategies for Cross-language Wikipedia Data Fusion. In Chung, C., 23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume (S. 1129-1134). , ACM: New York, NY.
  • Eckert, K., Ritze, D., Baierer, K. and Bizer, C. (2014). RESTful Open Workflows for Data Provenance and Reuse. In Chung, C., 23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume (S. 259-260). , ACM: New York, NY.
  • Fleischhacker, D., Paulheim, H., Bryl, V., Völker, J. and Bizer, C. (2014). Detecting Errors in Numerical Linked Data Using Cross-Checked Outlier Detection. In , The Semantic Web – ISWC 2014 : 13th International Semantic Web Conference, Riva del Garda, Italy, October 19-23, 2014. Proceedings, Part I (S. 357-372). Lecture Notes in Computer Science, Springer Internat. Publ.: Cham.
  • Lehmberg, O., Meusel, R. and Bizer, C. (2014). Graph structure in the Web - aggregated by Pay-Level Domain. In Menczer, F., WebSci 2014 : Proceedings of the 6th ACM Conference on Web Science, Bloomington, IND, USA, June 23 - 26, 2014 (S. 119-128). , ACM: New York, NY.
  • Meusel, R., Petrovski, P. and Bizer, C. (2014). The WebDataCommons Microdata, RDFa and Microformat Dataset Series. In , The Semantic Web – ISWC 2014 : 13th International Semantic Web Conference, Riva del Garda, Italy, October 19-23, 2014. Proceedings, Part I (S. 277-292). Lecture Notes in Computer Science, Springer Internat. Publ.: Cham.
  • Meusel, R., Vigna, S., Lehmberg, O. and Bizer, C. (2014). Graph Structure in the Web - Revisited. In , 23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume (S. 427-432). , Internat. World Wide Web Conferences Steering Committee: Geneva, Switzerland.
  • Paulheim, H., Ristoski, P., Mitichkin, E. and Bizer, C. (2014). Data Mining with Background Knowledge from the Web. In Fischer, S., Proceedings of the 5th RapidMiner World (2014) (S. 1-14). , Shaker: Aachen.
  • Petrovski, P., Bryl, V. and Bizer, C. (2014). Integrating Product Data from Websites offering Microdata Markup. In Chung, C., 23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume (S. 1299-1304). , ACM: Geneva.
  • Schmachtenberg, M., Bizer, C. and Paulheim, H. (2014). Adoption of the Linked Data Best Practices in Different Topical Domains. In Mika, P., The Semantic Web – ISWC 2014 : 13th International Semantic Web Conference, Riva del Garda, Italy, October 19-23, 2014. Proceedings, Part I (S. 245-260). Lecture Notes in Computer Science, Springer Internat. Publ.: Cham.
  • (2013). LDOW2013 Linked Data on the Web : Proceedings of the WWW2013 Workshop on Linked Data on the Web, Rio de Janeiro, Brazil, 14 May, 2013. In , (S. ). CEUR Workshop Proceedings, RWTH: Aachen.
  • Bizer, C., Eckert, K., Meusel, R., Mühleisen, H., Schuhmacher, M. and Völker, J. (2013). Deployment of RDFa, Microdata, and Microformats on the Web - A Quantitative Analysis. In Alani, H., The Semantic Web - ISWC 2013 : 12th International Semantic Web Conference, Sydney, NSW, Australia, October 21-25, 2013, Proceedings, Part II (S. 17-32). Lecture Notes in Computer Science, Springer: Berlin [u.a.].
  • Paulheim, H. and Bizer, C. (2013). Type Inference on Noisy RDF Data. In Alani, H., The Semantic Web - ISWC 2013 : 12th International Semantic Web Conference, Sydney, NSW, Australia, October 21-25, 2013, Proceedings, Part I (S. 510-525). Lecture Notes in Computer Science, Springer: Berlin [u.a.].
  • Hartig, O., Bizer, C. and Freytag, J.-C. (2009). Executing SPARQL queries over the web of linked data. In Bernstein, A., The Semantic Web - ISWC 2009 : 8th International Semantic Web Conference, ISWC 2009, Chantilly, VA, USA, October 25 - 29, 2009; proceedings (S. 293-309). Lecture Notes in Computer Science, Springer: Berlin [u.a.].
  • Auer, S., Bizer, C., Kobilarov, G., Lehmann, J., Cyganiak, R. and Ives, Z. (2007). Dbpedia: A nucleus for a web of open data. In Aberer, K., The Semantic Web : 6th International Semantic Web Conference, 2nd Asian Semantic Web Conference, ISWC 2007 + ASWC 2007, Busan, Korea, November 11 - 15, 2007; proceedings (S. 722-735). Lecture Notes in Computer Science, Springer: Berlin [u.a.].
  • Carroll, J. J., Bizer, C., Hayes, P. and Stickler, P. (2005). Named graphs, provenance and trust. In Ellis, A., 14th International Conference on World Wide Web, WWW 2005 : Chiba, Japan, May 10 - 14, 2005 ; [proceedings] (S. 613-622). , ACM: New York, NY.
  • Bryl, V., Bizer, C., Isele, R., Verlic, M., Hong, S. G., Jang, S., Yi, M. Y. and Choi, K.-S. (2014). Interlinking and Knowledge Fusion. In Auer, S. Linked Open Data - Creating Knowledge Out of Interlinked Data : Results of the LOD2 Project (S. 70-89). Cham: Springer Internat. Publ..

Teaching

Lectures

Lecture Videos

Videos and screen casts covering all of Christian Bizer's master courses are available on the DWS video lecture page.

Bachelor and Master Thesis

My group and I constantly offer master and bachelor thesis topics in relation to our research as well as the current focus of our seminar.  We are also open to students proposing their own topics as well as to master theses written in cooperation with companies. Please make an appointment if you are interested in writing a bachelor or master thesis with us.

Kontakt

Prof. Dr. Christian Bizer

Prof. Dr. Christian Bizer

Lehr­stuhl für Informations­systeme V: Web­basierte Systeme
University of Mannheim
Fakultät für Wirtschafts­informatik und Wirtschafts­mathematik
B 6, 26 – Room B 1.15
68159 Mannheim
Consultation hour(s):
Mi 13:30–14:30 Uhr