TY - GEN A1 - Low, Thomas A1 - Hentschel, Christian A1 - Stober, Sebastian A1 - Sack, Harald A1 - Nürnberger, Andreas ED - Amsaleg, Laurent ED - Guðmundsson, Gylfi Þór ED - Gurrin, Cathal ED - Jónsson, Björn Þór ED - Satoh, Shin'ichi T1 - Exploring large movie collections BT - comparing visual berrypicking and traditional browsing T2 - Lecture notes in computer science N2 - We compare Visual Berrypicking, an interactive approach allowing users to explore large and highly faceted information spaces using similarity-based two-dimensional maps, with traditional browsing techniques. For large datasets, current projection methods used to generate maplike overviews suffer from increased computational costs and a loss of accuracy resulting in inconsistent visualizations. We propose to interactively align inexpensive small maps, showing local neighborhoods only, which ideally creates the impression of panning a large map. For evaluation, we designed a web-based prototype for movie exploration and compared it to the web interface of The Movie Database (TMDb) in an online user study. Results suggest that users are able to effectively explore large movie collections by hopping from one neighborhood to the next. Additionally, due to the projection of movie similarities, interesting links between movies can be found more easily, and thus, compared to browsing serendipitous discoveries are more likely. KW - Exploratory interfaces KW - Media retrieval KW - Multidimensional scaling KW - User study Y1 - 2016 SN - 978-3-319-51814-5 SN - 978-3-319-51813-8 U6 - https://doi.org/10.1007/978-3-319-51814-5_17 SN - 0302-9743 SN - 1611-3349 VL - 10133 SP - 198 EP - 208 PB - Springer CY - Cham ER - TY - JOUR A1 - Waitelonis, Jörg A1 - Jürges, Henrik A1 - Sack, Harald T1 - Remixing entity linking evaluation datasets for focused benchmarking JF - Semantic Web N2 - In recent years, named entity linking (NEL) tools were primarily developed in terms of a general approach, whereas today numerous tools are focusing on specific domains such as e.g. the mapping of persons and organizations only, or the annotation of locations or events in microposts. However, the available benchmark datasets necessary for the evaluation of NEL tools do not reflect this focalizing trend. We have analyzed the evaluation process applied in the NEL benchmarking framework GERBIL [in: Proceedings of the 24th International Conference on World Wide Web (WWW’15), International World Wide Web Conferences Steering Committee, Republic and Canton of Geneva, Switzerland, 2015, pp. 1133–1143, Semantic Web 9(5) (2018), 605–625] and all its benchmark datasets. Based on these insights we have extended the GERBIL framework to enable a more fine grained evaluation and in depth analysis of the available benchmark datasets with respect to different emphases. This paper presents the implementation of an adaptive filter for arbitrary entities and customized benchmark creation as well as the automated determination of typical NEL benchmark dataset properties, such as the extent of content-related ambiguity and diversity. These properties are integrated on different levels, which also enables to tailor customized new datasets out of the existing ones by remixing documents based on desired emphases. Besides a new system library to enrich provided NIF [in: International Semantic Web Conference (ISWC’13), Lecture Notes in Computer Science, Vol. 8219, Springer, Berlin, Heidelberg, 2013, pp. 98–113] datasets with statistical information, best practices for dataset remixing are presented, and an in depth analysis of the performance of entity linking systems on special focus datasets is presented. KW - Entity Linking KW - GERBIL KW - evaluation KW - benchmark Y1 - 2019 U6 - https://doi.org/10.3233/SW-180334 SN - 1570-0844 SN - 2210-4968 VL - 10 IS - 2 SP - 385 EP - 412 PB - IOS Press CY - Amsterdam ER - TY - JOUR A1 - Yang, Haojin A1 - Quehl, Bernhard A1 - Sack, Harald T1 - A framework for improved video text detection and recognition JF - Multimedia tools and applications : an international journal N2 - Text displayed in a video is an essential part for the high-level semantic information of the video content. Therefore, video text can be used as a valuable source for automated video indexing in digital video libraries. In this paper, we propose a workflow for video text detection and recognition. In the text detection stage, we have developed a fast localization-verification scheme, in which an edge-based multi-scale text detector first identifies potential text candidates with high recall rate. Then, detected candidate text lines are refined by using an image entropy-based filter. Finally, Stroke Width Transform (SWT)- and Support Vector Machine (SVM)-based verification procedures are applied to eliminate the false alarms. For text recognition, we have developed a novel skeleton-based binarization method in order to separate text from complex backgrounds to make it processible for standard OCR (Optical Character Recognition) software. Operability and accuracy of proposed text detection and binarization methods have been evaluated by using publicly available test data sets. KW - Video OCR KW - Video indexing KW - Multimedia retrieval Y1 - 2014 U6 - https://doi.org/10.1007/s11042-012-1250-6 SN - 1380-7501 SN - 1573-7721 VL - 69 IS - 1 SP - 217 EP - 245 PB - Springer CY - Dordrecht ER - TY - BOOK A1 - Meinel, Christoph A1 - Sack, Harald T1 - Internetworking : technische Grundlagen und Anwendungen Y1 - 2012 SN - 978-3-540-92939-0 U6 - https://doi.org/10.1007/978-3-540-92940-6 PB - Springer-Verlag Berlin Heidelberg CY - Berlin, Heidelberg ER - TY - BOOK A1 - Meinel, Christoph A1 - Sack, Harald T1 - Digitale Kommunikation : Vernetzen, Multimedia, Sicherheit T3 - Media Press Y1 - 2009 SN - 978-3-540-92922-2 U6 - https://doi.org/10.1007/978-3-540-92923-9 SN - 1439-3107 PB - Springer-Verlag Berlin Heidelberg CY - Berlin, Heidelberg ER - TY - GEN A1 - Meinel, Christoph A1 - Sack, Harald T1 - WWW : Kommunikation, Internetworking, Web-Technologien Y1 - 2004 SN - 3-540-44276-6 SN - 1439-5428 PB - Springer CY - Berlin ER - TY - CHAP A1 - Kurbel, Karl A1 - Nowak, Dawid A1 - Azodi, Amir A1 - Jaeger, David A1 - Meinel, Christoph A1 - Cheng, Feng A1 - Sapegin, Andrey A1 - Gawron, Marian A1 - Morelli, Frank A1 - Stahl, Lukas A1 - Kerl, Stefan A1 - Janz, Mariska A1 - Hadaya, Abdulmasih A1 - Ivanov, Ivaylo A1 - Wiese, Lena A1 - Neves, Mariana A1 - Schapranow, Matthieu-Patrick A1 - Fähnrich, Cindy A1 - Feinbube, Frank A1 - Eberhardt, Felix A1 - Hagen, Wieland A1 - Plauth, Max A1 - Herscheid, Lena A1 - Polze, Andreas A1 - Barkowsky, Matthias A1 - Dinger, Henriette A1 - Faber, Lukas A1 - Montenegro, Felix A1 - Czachórski, Tadeusz A1 - Nycz, Monika A1 - Nycz, Tomasz A1 - Baader, Galina A1 - Besner, Veronika A1 - Hecht, Sonja A1 - Schermann, Michael A1 - Krcmar, Helmut A1 - Wiradarma, Timur Pratama A1 - Hentschel, Christian A1 - Sack, Harald A1 - Abramowicz, Witold A1 - Sokolowska, Wioletta A1 - Hossa, Tymoteusz A1 - Opalka, Jakub A1 - Fabisz, Karol A1 - Kubaczyk, Mateusz A1 - Cmil, Milena A1 - Meng, Tianhui A1 - Dadashnia, Sharam A1 - Niesen, Tim A1 - Fettke, Peter A1 - Loos, Peter A1 - Perscheid, Cindy A1 - Schwarz, Christian A1 - Schmidt, Christopher A1 - Scholz, Matthias A1 - Bock, Nikolai A1 - Piller, Gunther A1 - Böhm, Klaus A1 - Norkus, Oliver A1 - Clark, Brian A1 - Friedrich, Björn A1 - Izadpanah, Babak A1 - Merkel, Florian A1 - Schweer, Ilias A1 - Zimak, Alexander A1 - Sauer, Jürgen A1 - Fabian, Benjamin A1 - Tilch, Georg A1 - Müller, David A1 - Plöger, Sabrina A1 - Friedrich, Christoph M. A1 - Engels, Christoph A1 - Amirkhanyan, Aragats A1 - van der Walt, Estée A1 - Eloff, J. H. P. A1 - Scheuermann, Bernd A1 - Weinknecht, Elisa ED - Meinel, Christoph ED - Polze, Andreas ED - Oswald, Gerhard ED - Strotmann, Rolf ED - Seibold, Ulrich ED - Schulzki, Bernhard T1 - HPI Future SOC Lab BT - Proceedings 2015 N2 - Das Future SOC Lab am HPI ist eine Kooperation des Hasso-Plattner-Instituts mit verschiedenen Industriepartnern. Seine Aufgabe ist die Ermöglichung und Förderung des Austausches zwischen Forschungsgemeinschaft und Industrie. Am Lab wird interessierten Wissenschaftlern eine Infrastruktur von neuester Hard- und Software kostenfrei für Forschungszwecke zur Verfügung gestellt. Dazu zählen teilweise noch nicht am Markt verfügbare Technologien, die im normalen Hochschulbereich in der Regel nicht zu finanzieren wären, bspw. Server mit bis zu 64 Cores und 2 TB Hauptspeicher. Diese Angebote richten sich insbesondere an Wissenschaftler in den Gebieten Informatik und Wirtschaftsinformatik. Einige der Schwerpunkte sind Cloud Computing, Parallelisierung und In-Memory Technologien. In diesem Technischen Bericht werden die Ergebnisse der Forschungsprojekte des Jahres 2015 vorgestellt. Ausgewählte Projekte stellten ihre Ergebnisse am 15. April 2015 und 4. November 2015 im Rahmen der Future SOC Lab Tag Veranstaltungen vor. KW - Future SOC Lab KW - Forschungsprojekte KW - Multicore Architekturen KW - In-Memory Technologie KW - Cloud Computing KW - maschinelles Lernen KW - künstliche Intelligenz Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-102516 ER - TY - BOOK A1 - Boeddinghaus, Wilhelm A1 - Meinel, Christoph A1 - Sack, Harald T1 - Einführung von IPv6 in Unternehmensnetzen : ein Leitfaden T3 - Technische Berichte des Hasso-Plattner-Instituts für Digital Engineering an der Universität Potsdam - 52 Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-54582 SN - 978-3-86956-156-1 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - BOOK A1 - Meinel, Christoph A1 - Sack, Harald A1 - Bross, Justus T1 - Erster Deutscher IPv6 Gipfel N2 - Inhalt: KOMMUNIQUÉ GRUßWORT PROGRAMM HINTERGRÜNDE UND FAKTEN REFERENTEN: BIOGRAFIE & VOTRAGSZUSAMMENFASSUNG 1.) DER ERSTE DEUTSCHE IPV6 GIPFEL AM HASSO PLATTNER INSTITUT IN POTSDAM - PROF. DR. CHRISTOPH MEINEL - VIVIANE REDING 2.) IPV6, ITS TIME HAS COME - VINTON CERF 3.) DIE BEDEUTUNG VON IPV6 FÜR DIE ÖFFENTLICHE VERWALTUNG IN DEUTSCHLAND - MARTIN SCHALLBRUCH 4.) TOWARDS THE FUTURE OF THE INTERNET - PROF. DR. LUTZ HEUSER 5.) IPV6 STRATEGY & DEPLOYMENT STATUS IN JAPAN - HIROSHI MIYATA 6.) IPV6 STRATEGY & DEPLOYMENT STATUS IN CHINA - PROF. WU HEQUAN 7.) IPV6 STRATEGY AND DEPLOYMENT STATUS IN KOREA - DR. EUNSOOK KIM 8.) IPV6 DEPLOYMENT EXPERIENCES IN GREEK SCHOOL NETWORK - ATHANASSIOS LIAKOPOULOS 9.) IPV6 NETWORK MOBILITY AND IST USAGE - JEAN-MARIE BONNIN 10.) IPV6 - RÜSTZEUG FÜR OPERATOR & ISP IPV6 DEPLOYMENT UND STRATEGIEN DER DEUTSCHEN TELEKOM - HENNING GROTE 11.) VIEW FROM THE IPV6 DEPLOYMENT FRONTLINE - YVES POPPE 12.) DEPLOYING IPV6 IN MOBILE ENVIRONMENTS - WOLFGANG FRITSCHE 13.) PRODUCTION READY IPV6 FROM CUSTOMER LAN TO THE INTERNET - LUTZ DONNERHACKE 14.) IPV6 - DIE BASIS FÜR NETZWERKZENTRIERTE OPERATIONSFÜHRUNG (NETOPFÜ) IN DER BUNDESWEHR HERAUSFORDERUNGEN - ANWENDUNGSFALLBETRACHTUNGEN - AKTIVITÄTEN - CARSTEN HATZIG 15.) WINDOWS VISTA & IPV6 - BERND OURGHANLIAN 16.) IPV6 & HOME NETWORKING TECHINCAL AND BUSINESS CHALLENGES - DR. TAYEB BEN MERIEM 17.) DNS AND DHCP FOR DUAL STACK NETWORKS - LAWRENCE HUGHES 18.) CAR INDUSTRY: GERMAN EXPERIENCE WITH IPV6 - AMARDEO SARMA 19.) IPV6 & AUTONOMIC NETWORKING - RANGANAI CHAPARADZA 20.) P2P & GRID USING IPV6 AND MOBILE IPV6 - DR. LATIF LADID T3 - Technische Berichte des Hasso-Plattner-Instituts für Digital Engineering an der Universität Potsdam - 24 Y1 - 2008 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-32865 ER -