Semantic Technologies

In recent years the Semantic Web has emerged as one of the most essential achievements for the future of the World Wide Web (WWW). Semantic Web technology extends the WWW but also enables to improve applications which are related to other fields such as communication, information, knowledge, media, and interaction technologies. Semantic Web provides not just new technologies and tools but also new paradigms and ways of thinking, to make information processing more efficient and more structured.

Our research is focussed on the devolpment and improvement of 'semantically supported multimedia retrieval and search technologies'.

Table of Contents

  • Current News
  • Prior Events and Activities
  • Research Topics
  • Research Team
  • Former Team Members
  • Teaching
  • Supervised Master Theses
  • Projects and Partners
  • In the Media
  • Recent Publications

Research Topics

  • (1) Semantic Multimedia
  • (2) Linked Data Engineering and Applications
  • (3) Semantically enhanced Information Retrieval (Semantic Search)
  • (4) Knowledge Mining and Ontological Engineering
  • (5) Semantically enriched e-Learning Applications

Job Offers

Research Team

Former Team Members

  • Dr. Olaf Hartig (PostDoc)
  • Dinesh Reddy, M.Sc.
  • Tamara Bobic, M.Sc.
  • Dipl.-Inf. Katarina Birghan
  • Bernhard Quehl, M.Sc.
  • Dr. Nadine Steinmetz
  • Dr. Haojin Yang
  • Dipl.-Inf. Lina Wolf
  • Dipl.-Dokumentar Johannes Hercher
  • Joscha Jäger, M.A. (internship)
  • Johannes Osterhoff, M.A.
  • Dipl.-Inf. Zalan Kramer
Left to Right: Nadine Steinmetz, Johannes Osterhoff, Dr. Harald Sack, Jörg Waitelonis, Christian Hentschel, Bernhard Quehl

Our group

Publications

  • VAMO – What Story Do You Want to Tell? Cabral, Felipe; Shah, Simran; Zhou, Zhiheng; Serth, Sebastian; Krogmann, Simon; Lötzsch, Winfried (2018).
     
  • Serving Live Multimedia for the Linked Open Data Cloud. Serth, Sebastian; Haarmann, Stephan; Faber, Lukas in Lecture Notes in Informatics, M. Eibl, M. Gaedke (reds.) (2017). (Vol. P-275) 2487–2498.
     
  • Guilt-by-Association: Detecting Malicious Entities via Graph Mining. Najafi, Pejman; Sapegin, Andrey; Cheng, Feng; Meinel, Christoph (2017). 88–107.
     
  • I am a Machine, let me understand Web Media!. Knuth, Magnus; Waitelonis, Jörg; Sack, Harald in LNCS (2016). 467–475.
     
  • Don’t compare Apples to Oranges - Extending GERBIL for a fine grained NEL evaluation. Waitelonis, Jörg; Jürges, Henrik; Sack, Harald (2016).
     
  • Scheduling Refresh Queries for Keeping Results from a SPARQL Endpoint Up-to-Date (Extended Version). Knuth, Magnus; Hartig, Olaf; Sack, Harald in CoRR (2016). abs/1608.08130
     
  • Scheduling Refresh Queries for Keeping Results from a SPARQL Endpoint Up-to-Date. Knuth, Magnus; Hartig, Olaf; Sack, Harald (2016).
     
  • Joint proceedings of the 2nd Workshop on Managing the Evolution and Preservation of the Data Web (MEPDaW 2016) and the 3rd Workshop on Linked Data Quality (LDQ 2016) Debattista, Jeremy; Fernández, Javier D.; Knuth, Magnus; Kontokostas, Dimitris; Rula, Anisa; Umbrich, Jürgen; Zaveri, Amrapali in CEUR Workshop Proceedings (2016). CEUR.org.
     
  • Data Integration for the Media Value Chain. Agt-Rickauer, Henning; Waitelonis, Jörg; Tietz, Tabea; Sack, Harald in 1690 (2016).
     
  • Pre-Course Key Segment Analysis of Online Lecture Videos. Che, Xiaoyin; Staubitz, Thomas; Yang, Haojin; Meinel, Christoph (2016).
     
  • Quantitative Analysis of Art Market Using Ontologies, Named Entity Recognition and Machine Learning: A Case Study. Filipiak, Dominik; Agt-Rickauer, Henning; Hentschel, Christian; Filipowska, Agata; Sack, Harald (2016). 79–90.
     
  • Fine tuning CNNS with scarce training data - Adapting imagenet to art epoch classification. Hentschel, Christian; Wiradarma, Timur Pratama; Sack, Harald (2016). 3693–3697.
     
  • openSAP: Evaluating xMOOC Usage and Challenges for Scalable and Open Enterprise Education. Renz, Jan; Schwerer, Florian; Meinel, Christoph (2016).
     
  • DBpedia Links: The Hub of Links for the Web of Data. Dojchinovski, Milan; Kontokostas, Dimitris; Rößling, Robert; Knuth, Magnus; Hellmann, Sebastian (2016).
     
  • Evaluating Query and Storage Strategies for RDF Archives. Fernández, Javier D.; Umbrich, Jürgen; Polleres, Axel; Knuth, Magnus (2016). 41–48.
     
  • refer: a Linked Data based Text Annotation and Recommender System for Wordpress. Tietz, Tabea; Waitelonis, Jörg; Jäger, Joscha; Sack, Harald in CEUR-WS (2016). (Vol. 1690)
     
  • Semantic Annotation and Information Visualization for Blogposts with refer. Tietz, Tabea; Jäger, Joscha; Waitelonis, Jörg; Sack, Harald (2016). (Vol. 1704) 28–40.
     
  • An Improved System For Real-Time Scene Text Recognition. Yang, Haojin; Wang, Cheng; Che, Xiaoyin; Luo, Sheng; Meinel, Christoph (2015). 657–660.
     
  • TailR: A Platform for Preserving History on the Web of Data. Meinhardt, Paul; Knuth, Magnus; Sack, Harald A. Polleres, T. Pellegrini, S. Hellmann, J. X. Parreira (reds.) (2015). 57–64.
     
  • Enhance Lecture Archive Search with OCR Slide Detection and In-Memory Database Technology. Malchow, Martin; Bauer, Matthias; Meinel, Christoph (2015). 176–183.
     
  • PatchR: A Framework for Linked Data Change Requests. Knuth, Magnus; Sack, Harald in International Journal on Semantic Web and Information Systems (IJSWIS) (2015). 11(1) 30–45.
     
  • Towards Linked Data Update Notifications - Reviewing and Generalizing the sparqlPuSH approach. Knuth, Magnus; Reddy, Dinesh; Dimou, Anastasia; Vahdati, Sahar; Kastrinakis, George A. Dimou, J. van Ossenbruggen, M.-E. Vidal, M. V. Sande (reds.) (2015).
     
  • FRanCo - A Ground Truth Corpus for Fact Ranking Evaluation. Bobic, Tamara; Waitelonis, Joerg; Sack, Harald G. Cheng, K. Gunaratna, A. Thalhammer (reds.) (2015).
     
  • DBpedia Commons: Structured Multimedia Metadata from the Wikimedia Commons. Vaidya, Gaurav; Kontokostas, Dimitris; Knuth, Magnus; Lehmann, Jens; Hellmann, Sebastian in Lecture Notes in Computer Science, M. Arenas, O. Corcho, E. Simperl, M. Strohmaier, M. d’Aquin, K. Srinivas, P. T. Groth, M. Dum (reds.) (2015). (Vol. 9367) 281–289.
     
  • Improving text recognition by distinguishing scene and overlay text Quehl, Bernhard; Yang, Haojin; Sack, Harald (2015). (Vol. 9445) 944509. SPIE.
     
  • Adaptive E-Lecture Video Outline Extraction Based on Slides Analysis. Che, Xiaoyin; Yang, Haojin; Meinel, Christoph (2015). 59–68.
     
  • Optimizing the Video Experience in MOOCs. Renz, Jan; Bauer, Matthias; Malchow, Martin; Staubitz, Thomas; Meinel, Christoph (2015).
     
  • The DBpedia Events Dataset. Knuth, Magnus; Lehmann, Jens; Kontokostas, Dimitris; Steiner, Thomas; Sack, Harald S. Villata, J. Z. Pan, M. Dragoni (reds.) (2015).
     
  • Proceedings of the 2nd Workshop on Linked Data Quality co-located with 12th Extended Semantic Web Conference (ESWC 2015) Rula, Anisa; Zaveri, Amrapali; Knuth, Magnus; Kontokostas, Dimitris (2015). (Vol. 1376) CEUR-WS.org, Portorož, Slovenia.
     
  • Proceedings of the 1st Workshop on Linked Data Quality (LDQ) Knuth, Magnus; Kontokostas, Dimitris; Sack, Harald in CEUR Workshop Proceedings (2014). CEUR-WS.org, Leipzig, Germany.
     
  • Smart Media Navigator: Visualizing Recommendations based on Linked Data. Tietz, Tabea; Waitelonis, Jörg; Jäger, Joscha; Sack, Harald (2014). 48–51.
     
  • WaSABi 2014: Breakout Brainstorming Session Summary. Coppens, Sam; Hammar, Karl; Knuth, Magnus; Neumann, Marco; Ritze, Dominique; Sande, Miel Vander in CEUR Workshop Proceedings, Ángel García-Crespo, J. M. G. Berbís, M. Radzimski, J. L. Sánchez-Cervantes, S. Coppens, K. Hammar, M. Knuth, M. Neumann, D. Ritze, M. V. Sande (reds.) (2014).
     
  • Linked Data Quality: Identifying and Tackling the Key Challenges. Knuth, Magnus; Kontokostas, Dimitris; Sack, Harald in CEUR Workshop Proceedings (2014).
     
  • Joint Proceedings of the Second International Workshop on Semantic Web Enterprise Adoption and Best Practice and Second International Workshop on Finance and Economics on the Semantic Web Co-located with 11th European Semantic Web Conference García-Crespo, Ángel; Berbís, Juan Miguel Gómez; Radzimski, Mateusz; Sánchez-Cervantes, José Luis; Coppens, Sam; Hammar, Karl; Knuth, Magnus; Neumann, Marco; Ritze, Dominique; Sande, Miel Vander in CEUR Workshop Proceedings (2014). CEUR-WS.org, Anissaras, Crete, Greece.
     
  • Linked Data Cleansing and Change Management. Knuth, Magnus in Lecture Notes in Computer Science, P. Lambrix, E. Hyvönen, E. Blomqvist, V. Presutti, G. Qi, U. Sattler, Y. Ding, C. Ghidini (reds.) (2014). (Vol. 8982) 201–208.
     
  • Data Cleansing Consolidation with PatchR. Knuth, Magnus; Sack, Harald in Lecture Notes in Computer Science, Presutti, V., Blomqvist, E., Troncy, R., Sack, H., Papadakis, I., Tordai, A. (reds.) (2014). (8798th ed)
     
  • CONTENTUS - technologies for next generation multimedia libraries. Nandzik, Jan; Litz, Berenike; Flores-Herr, Nicolas; Löhden, Aenne; Konya, Iuliu; Baum, Doris; Bergholz, André; Schönfuß, Dirk; Fey, Christian; Osterhoff, Johannes; Waitelonis, Jörg; Sack, Harald; Köhler, Ralf; Ndjiki-Nya, Patrick in Multimedia Tools and Applications (2013). 63(2) 287–329.
     
  • openHPI - a Case-Study on the Emergence of two Learning Communities. Grünewald, Franka; Mazandarani, Elnaz; Meinel, Christoph; Teusner, Ralf; Totschnig, Michael; Willems, Christian (2013).
     
  • Lecture Video Segmentation by Automatically Analyzing the Synchronized Slides. Che, Xiaoyin; Yang, Haojin; Meinel, Christoph (2013). 345–348.
     
  • Linked Soccer Data. Bergmann, Tanja; Bunk, Stefan; Eschrig, Johannes; Hentschel, Christian; Knuth, Magnus; Sack, Harald; Schüler, Ricarda (2013).
     
  • openHPI: Evolution of a MOOC Platform from LMS to SOA. Totschnig, Michael; Willems, Christian; Meinel, Christoph (2013). 49–54.
     
  • Tree-structure Outline Generation for Lecture Videos with Synchronized Slides. Che, Xiaoyin; Yang, Haojin; Meinel, Christoph (2013). 87–92.
     
  • Statistical Analyses of Named Entity Disambiguation Benchmarks. Steinmetz, Nadine; Knuth, Magnus; Sack, Harald (2013).
     
  • Semantic Multimedia Information Retrieval Based on Contextual Descriptions. Steinmetz, Nadine; Sack, Harald (2013).
     
  • Cross-Dataset Learning of Visual Concepts In: Adaptive Multimedia Retrieval: User, Context, and Feedback. Hentschel, Chirstian; Sack, Harald; Steinmetz, Nadine (2012).
     
  • A framework for improved video text detection and recognition. YANG, Haojin; Quehl, Bernhard; Sack, Harald in Multimedia Tools and Applications (2012). 69(1) 217–245.
     
  • Text Detection in Video Images Using Adaptive Edge Detection and Stroke Width Verification. Haojin Yang, Bernhard Quehl; Sack, Harald (2012).
     
  • Evaluating Entity Summarization Using a Game-Based Ground Truth. Thalhammer, Andreas; Knuth, Magnus; Sack, Harald (2012).
     
  • DBpedia Ontology Enrichment for Inconsistency Detection. Töpper, Gerald; Knuth, Magnus; Sack, Harald (2012).
     
  • An Automated Analysis and Indexing Framework for Lecture Video Portal. Yang, Haojin; Oehlke, Christoph; Meinel, Christoph in lecture notes in computer science (2012). 285–294.
     
  • A Skeleton based Binarization Approach for Video Text Recognition. Yang, Haojin; Quehl, Bernhard; Sack, Harald (2012).
     
  • Collaboratively Patching Linked Data. Knuth, Magnus; Hercher, Johannes; Sack, Harald (2012). 33–40.
     
  • Towards exploratory video search using linked data. Waitelonis, Jörg; Sack, Harald in Multimedia Tools and Applications (2012). 59(2) 645–672.
     
  • Open Up Cultural Heritage in Video Archives with Mediaglobe. Hentschel, Christian; Hercher, Johannes; Knuth, Magnus; Osterhoff, Johannes; Quehl, Bernhard; Sack, Harald; Steinmetz, Nadine; Waitelonis, Jörg; Yang, Haojin in Lecture Notes in Informatics (2012).
     
  • Automated Extraction of Lecture Outlines from Lecture Videos: a Hybrid Solution for Lecture Video Indexing. Yang, Haojin; Gruenewald, Franka; Meinel, Christoph (2012).
     
  • Open Up Cultural Heritage in Video Archives with Mediaglobe. Hentschel, Christian; Hercher, Johannes; Knuth, Magnus; Osterhoff, Johannes; Quehl, Bernhard; Sack, Harald; Steinmetz, Nadine; Waitelonis, Jörg; Yang, Haojin in Lecture Notes in Informatics (2012).
     
  • Lecture Video Indexing and Analysis Using Video OCR Technology. Yang, Haojin; Siebert, Maria; Lühne, Patrick; Sack, Harald; Meinel, Christoph (2011).
     
  • WhoKnows? - Evaluating Linked Data Heuristics with a Quiz that Cleans Up DBpedia. Ludwig, Nadine; Waitelonis, Jörg; Knuth, Magnus; Sack, Harald in LNCS (2011).
     
  • More than the Sum of its Parts: CONTENTUS -- A Semantic Multimodal Search User Interface. Waitelonis, Jörg; Osterhoff, Johannes P.; Sack, Harald in CEUR Workshop Proceedings (2011). (Vol. 694)
     
  • Sneak Preview? Instantly Know What To Expect In Faceted Browsing. Osterhoff, Johannes; Waitelonis, Jörg; Jäger, Joscha; Sack, Harald (2011).
     
  • A Solution for German Speech Recognition for Analysis and Processing of Lecture Videos. Yang, Haojin; Oehlke, Christoph; Meinel, Christoph (2011).
     
  • The Generation of User Interest Profiles from Semantic Quiz Games. Knuth, Magnus; Ludwig, Nadine; Wolf, Lina; Sack, Harald (2011).
     
  • Improving Search in Tele-Lecturing: Using Folksonomies as Trigger to Query Semantic Datasets to Extract Additional Metadata. Franka Moritz, Maria Siebert; Meinel, Christoph (2011).
     
  • Lecture Video Indexing and Analysis Using Video OCR Technology. Yang, Haojin; Sack, Harald; Meinel, Christoph in International Journal of Multimedia Processing and Technologies (JMPT) (2011). 2(4) 176–196.
     
  • Whoknows? - Evaluating Linked Data Heuristics with a Quiz that cleans up DBpedia. Waitelonis, Jörg; Ludwig, Nadine; Knuth, Magnus; Sack, Harald in International Journal of Interactive Technology and Smart Education (ITSE) (2011). 8(4) 236–248.
     
  • Towards exploratory video search using linked data. Waitelonis, Jörg; Sack, Harald (2011). (Vol. 53) 1–28.
     
  • WhoKnows? - Evaluating Linked Data Heuristics with a Quiz that Cleans Up DBpedia. Waitelonis, Jörg; Ludwig, Nadine; Knuth, Magnus; Sack, Harald (2011). (Vol. 8) 236–248.
     
  • RISQ! Renowned Individuals Semantic Quiz – A Jeopardy like Quiz Game for Ranking Facts. Wolf, Lina; Knuth, Magnus; Osterhoff, Johannes; Sack, und Harald in ICPS (2011).
     
  • Named Entity Recognition for User-Generated Tags. Ludwig, Nadine; Sack, Harald in CS (2011).
     
  • Community Tagging in Tele-Teaching Environments. Grünewald, Franka; Siebert, Maria; Meinel, Christoph (2011).
     
  • Automatic Lecture Video Indexing Using Video OCR Technology. Yang, Haojin; Siebert, Maria; Lühne, Patrick; Sack, Harald; Meinel, Christoph (2011).
     
  • Distributed Recognition of Content Similarity in a Tele-Teaching Portal. Siebert, Maria; Moritz, Franka; Meinel, Christoph (2010).
     
  • Use What You Have -- Yovisto Video Search Engine Takes a Semantic Turn. Waitelonis, Jörg; Ludwig, Nadine; Sack, Harald (2010).
     
  • Semantische Suche - Theorie und Praxis am Beispiel der Videosuchmaschine yovisto.com. Sack, Harald in Web 3.0 & Semantic Web, HMD - Praxis der Wirtschaftsinformatik, (U. Hentgartner; A. Meier, reds.) (2010). 271
     
  • Indexing German Audiovisual Heritage - SKOSification Made Easy. Hercher, Johannes; Sack, Harald (2010).
     
  • Tracing the Provenance of Object-Oriented Computations on RDF Data. Quasthoff, Matthias; Meinel, Christoph in 576 (2010). paper 4.
     
  • A Linked Data Web Programm Framework. Quasthoff, Matthias; Meinel, Christoph in LNCS (2010).
     
  • Establishing an Expandable Architecture for a tele-Teaching Platform. Siebert, Maria; Moritz, Franka; Meinel, Christoph in ACIS (2010). 323–328.
     
  • Enabling Reputation Interoperability through Semantic Technologies. Alnemr, Rehab; Paschke, Adrian; Meinel, Christoph (2010). No.13.
     
  • Realization of an Expandable Search Function for an E-Learning Web Portal. Siebert, Maria; Meinel, Christoph in ACIS (2010). 361–366.
     
  • Exploratory Semantic Video Search with yovisto. Waitelonis, Jörg; Sack, Harald (2010). 446–447.
     
  • SEMANTISCHE SUCHE-Theorie und Praxis am Beispiel der Videosuchmaschine yovisto.com. Sack; Harald (2010). 13–25.
     
  • The Path is the Destination -- Enabling a New Search Paradigm with Linked Data. Waitelonis, Jörg; Knuth, Magnus; Wolf, Lina; Hercher, Johannes; Sack, Harald in CEUR Workshop Proceedings (2010). (Vol. 700)
     
  • Community Rating in the Tele-Lecturing Context. Moritz, Franka; Siebert, Maria; Meinel, Christoph (2010).
     
  • Unsupervised Matching of Object Models and Ontologies. Quasthoff, Matthias; Völkel, Max; Meinel, Christoph (2010). 7.
     
  • Semantically Enabled Exploratory Video Search. Waitelonis, Jörg; Sack, Harald; Kramer, Zalan; Hercher, Johannes (2010). 8:1–8:8.
     
  • Towards Exploratory Video Search Using Linked Data. Waitelonis, Jörg; Sack, Harald (2009). 540–545.
     
  • Augmenting Video Search with Linked Open Data. Waitelonis, Jörg; Sack, Harald in J.UCS Conference Proceedings Series (2009). 550–558.
     
  • Can Software Developers Use Linked Data Vocabulary?. Quasthoff, Matthias; Sack, Harald; Meinel, Christoph in J.UCS Conference Proceedings Series (2009). 542–549.
     
  • How to Simplify Building Semantic Web Applications. Quasthoff, Matthias; Sack, Harald; Meinel, Christoph in CEUR Workshop Proceedings (2009). (Vol. 524)
     
  • Linking the tele-TASK Video Portal to the Semantic Web. Baumann, Bert; Sack, Harald; Groß, Andreas; Meinel, Christoph (2009). (Vol. 148) 205–216.
     
  • Who Reads and Writes the Social Web? A Security Architecture for Web 2.0 Applications. Quasthoff, Matthias; Sack, Harald; Meinel, Christoph (2008). 576–582.
     
  • Semantic Web Admission Free – Obtaining RDF and OWL Data from Application Source Code. Quasthoff, Matthias; Meinel, Christoph (2008).
     
  • Automatische Erzeugung Semantischer Annotationen für Vorlesungsvideos. Repp, Stephan; Linckels, Serge; Meinel, Christoph (2008). (Vol. 132GI) 149–160.
     
  • Retrieval Optimization of Pertinent Answers for NL Questions with the E-Librarian Service. Linckels, Serge; Sack, Harald; Meinel, Christoph (2007).
     
  • Segmentation and Annotation of Audiovisual Recordings based on Automated Speech Recognition. Repp, Stephan; Waitelonis, Jörg; Sack, Harald; Meinel, Christoph in LNCS (2007). (Vol. 4881) 620–629.
     
  • Optimizing the Retrieval of Pertinent Answers for NL Questions with the E-Librarian Service. Linckels, Serge; Sack, Harald; Meinel, Christoph in LNCS (2007).
     
  • Why HTTPS Is Not Enough - A Signature-Based Architecture for Trusted Content on the Social Web. Quasthoff, Matthias; Sack, Harald; Meinel, Christoph (2007). 820–824.
     
  • Encouraging Participation in Virtual Communities: The "IT-summit-blog" Case. Bross, Justus; Sack, Harald; Meinel, Christoph (2007). 245–254.
     
  • Encouraging Participation in Virtual Communities - The IT-Summit Blog Case. Bross, Justus; Sack, Harald; Meinel, Christoph in Int. Journal on WWW/Internet (2007). 5(2) 113–129.
     
  • Probabilistic Equivalence Checking of Multiple-Valued Functions. Dubrova, Elena; Sack, Harald in Multiple-Valued Logic and Soft Computing (2004). 10(4) 395–414.
     
  • Adapted Variable Reordering for XOR-OBDDs. Meinel, Christoph; Sack, H. (2003). 135–144.
     
  • Course Management in the Twinkle of an Eye. Meinel, Christoph; Sack, Harald; Schillings, Volker (2002). 281–283.
     
  • VisBDD - A Webbased Visualization Framework for OBDD Algorithms. Meinel, Christoph; Sack, Harald; Schillings, Volker (2002). 385–390.
     
  • IDDS: An Interactive Decentralized Documentation System. Meinel, Christoph; Sack, Harald; Schillings, Volker (2001).
     
  • A Simple Heuristic for Mod2-OBDD Minimization. Meinel, Christoph; Sack, Harald (2001). 304–309.
     
  • Improving XOR-node Placement for Mod2-OBDD Minimzation. Meinel, Christoph; Sack, Harald (2001). 51–56.
     
  • Mod-p-DDs: A Data-Structure for Multiple-Valued Functions. Sack, Harald; Dubrova, Elena; Meinel, Christoph (2000). 233–238.
     
  • Representation of Multiple-Valued Functions with Mod-p Decision Diagrams. Sack, Harald; Dubrova, Elena; Meinel, Christoph (2000). 341–348.
     
  • Functional Extension of Decision Diagrams in Practice. Sack, Harald; Meinel, Christoph (2000). 195–196.
     
  • A Search-Engine-Topology to Improve Document Retrieval on the Web. Roth, Uwe; Heuer, Andreas; Haffner, Ernst-Georg; Meinel, Christoph (2000). 470–475.
     
  • Integration der Schleusentechnologie "Lock-Keeper" in moderne Sicherheitsarchitekturen. Haffner, Ernst-Georg; Engel, Thomas; Meinel, Christoph (2000).
     
  • Probabilistic Symbolic Simulation and Verification with Mod2-OBDDs. Sack, Harald; Meinel, Christoph in Electronic Notes in Theoretical Computer Science (1999). 22 156–170.
     

Projects and Partners

 

  • AV-Portal Gottfried-Leibnitz-Universität Hannover, project with Technische Informationsbibliothek Hannover (TIB)
  • Semantic Media Explorer (SEMEX)
    The Semantic Media Explorer is a demonstrator that combines the latest media analysis processes to provides optimal access to video content.
  • MEDIAGLOBE Project
    The aim of MEDIAGLOBE is to open and interlink heterogenouse and currently isolated information sources in media archives and broadcasting corporation. Project partners: DEFA-spektrum, Medienbildungsgesellschaft Babelsberg mbH, Blue Order GmbH
  • THESEUS/CONTENTUS Project
    The purpose of CONTENTUS is to develop basic technologies with which to access, archive and search for multi-media cultural assets and works of art.
  • YOVISTO
    Yovisto is a video search engine specialized in academic content. Yovisto's search index is based on the combination of automated content based video analysis with user generated collaborative annotation (collaborative tagging, discussions, and comments). In difference to traditional video search engines, Yovisto enables pinpoint access within video data by providing fine-granular, time-dependent metadata.
  • Semantic Games
    Games with a purpose that are dedicated to create and curate semantic content.

Current News

Prior Events and Activities

 

2011

2010

2009

Teaching

 

 

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2014 (SS)

2013/14 (WS)

2013 (SS)

  • Seminar (Master): Semantic Multimedia (Blog)
  • Seminar (Bachelor): Multimedia Analyse Technologien (Blog)
  • Schülerkolleg (für Schüler der 8. bis 10. Klasse): Internetsuche und Google PageRank - Wie wird was durch wen gefunden?
    • Woche 1 - 09.04.2013: Die Geschichte der Web-Suchmaschinen (pdf)
    • Woche 2 - 23.04.2013: Term- und Dokumentenranking (pdf)
    • Woche 3 - 07.05.2013: Google Page Rank (pdf)
    • Woche 4 - 21.05.2013: Personalisierung und Web Crawling (pdf)
    • Woche 5 - 04.06.2013: Semantische Suche

 

 

2012/13 (WS)

2012 (SS)

2011/12 (WS)

2011 (SS)

2010/11 (WS)

2010 (SS)

2009/10 (WS)

 

 

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Supervised Master Theses

  • Gerald Töpper: Erweiterung der DBpedia Ontologie und des Extraction Frameworks zur Sicherung der Datenqualität. (finished April 2012)
  • Peter Retzlaff: Visualisierung von Bag-of-Visual-Words-Vektoren für die Visual Concept Detection (finished March 2014)
  • Sebastian Stange: Evaluierung einer semantischen Videosuche und Ermittlung geeigneter Videoanalysetechniken (finished March 2014)
  • Michael Wolowyk: Semantic Recommender Systems (preliminary title) (in progress)

Open Master Theses

Please find a list of possible topics for Master Theses. Contact us, if you are interested in one of these topics or have own suggestions.

  • Video Analysis:
    • OCR Spellcorrection
    • Tag Relevance Estimation in Photo Communities
    • Learning Local Image Descriptors
  • Linked Data and Semantic Web:
    • Named Entity Evolution
    • Authority File Mapping
    • A Mereology for Media Fragments

 

 

Press

 

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