@inproceedings{ubo_mods_00111873,
  author = {Stegemann, Timo and Ziegler, Jürgen},
  editor = {Nikitina, Nadeschda and Song, Dezhao},
  title = {Pattern-based analysis of SPARQL queries from the LSQ dataset},
  booktitle = {Proceedings of the ISWC 2017 Posters & Demonstrations and Industry Tracks},
  series = {CEUR Workshop Proceedings},
  year = {2017},
  publisher = {CEUR-WS},
  address = {Aachen},
  volume = {1963},
  issn = {1613-0073},
  url = {http://ceur-ws.org/Vol-1963/paper542.pdf}
}


@inproceedings{Stegemann2017,
  author = {Stegemann, Timo and Ziegler, Jürgen},
  editor = {d’Amato, Claudia and Fernandez, Miriam and Tamma, Valentina and Lecue, Freddy and Cudré-Mauroux, Philippe and Sequeda, Juan and Lange, Christoph and Heflin, Jeff},
  title = {Investigating Learnability, User Performance, and Preferences of the Path Query Language SemwidgQL Compared to SPARQL},
  booktitle = {The Semantic Web – ISWC 2017: 16th International Semantic Web Conference, Vienna, Austria, October 21–25, 2017, Proceedings, Part I},
  year = {2017},
  publisher = {Springer International Publishing},
  address = {Cham},
  pages = {611–627},
  abstract = {In this paper, we present an empirical comparison of user performance and perceived usability for Sparql versus SemwidgQL, a path-oriented Rdf query language. We developed SemwidgQL to facilitate the formulation of Rdf queries and to enable non-specialist developers and web authors to integrate Linked Data and other semantic data sources into standard web applications. We performed a user study in which participants wrote a set of queries in both languages. We measured both objective performance as well as subjective responses to a set of questionnaire items. Results indicate that SemwidgQL is easier to learn, more efficient, and preferred by learners. To assess the applicability of SemwidgQL in real applications, we analyzed its expressiveness based on a large corpus of observed Sparql queries, showing that the language covers more than 90% of the typical queries performed on Linked Data.},
  isbn = {978-3-319-68288-4},
  doi = {10.1007/978-3-319-68288-4_36},
  url = {https://doi.org/10.1007/978-3-319-68288-4_36}
}


@article{Lausen2016,
  author = {Lausen, Melanie and Herrmanny, Katja and Stegemann, Timo and Dogangün, Aysegül},
  title = {Health-Promoting Virtual Shopping Recommender},
  year = {2016},
  month = {jun},
  url = {https://figshare.com/articles/Demo_1_Health-Promoting_Virtual_Shopping_Recommender/3444821},
  doi = {10.6084/m9.figshare.3444821.v1},
  month_numeric = {6}
}


@article{ziegler2014role,
  title = {The Role of Semantic Data in Engineering Interactive Systems},
  author = {Ziegler, Jürgen and Stegemann, Timo},
  journal = {HCI Engineering Charting the Way towards Methods and Tools for Advanced Interactive Systems},
  pages = {43},
  year = {2014}
}


@inproceedings{Stegemann14,
  author = {Stegemann, Timo and Ziegler, Jürgen},
  title = {SemwidgJS: A Semantic Widget Library for the Rapid Development of User Interfaces for Linked Open Data},
  booktitle = {44. Jahrestagung der Gesellschaft für Informatik, Informatik 2014, Big Data - Komplexität meistern, 22.-26. September 2014 in Stuttgart, Deutschland},
  year = {2014},
  pages = {479–490},
  bibsource = {dblp computer science bibliography, http://dblp.org},
  biburl = {http://dblp.dagstuhl.de/rec/bib/conf/gi/StegemannZ14},
  timestamp = {Tue, 15 Mar 2016 10:32:20 +0100},
  url = {http://subs.emis.de/LNI/Proceedings/Proceedings232/article93.html},
  editor = {Plödereder, Erhard and Grunske, Lars and Schneider, Eric and Ull, Dominik},
  series = {LNI},
  volume = {232},
  publisher = {GI},
  isbn = {978-3-88579-626-8}
}


@inproceedings{ubo:36047,
  author = {Stegemann, Timo and Ziegler, Jürgen and Hussein, Tim and Gaulke, Werner},
  chapter = {},
  title = {Interactive Construction of Semantic Widgets  for Visualizing Semantic Web Data},
  year = {2012},
  publisher = {ACM New York, NY, USA},
  abstract = {The rapidly growing amount of semantically represented data on the Web creates the need for more intuitive methods and tools to interact with these data and to use them in standard Web applications. We present a method how users can interactively define personalized views of large semantic data spaces. Specifically, we propose X3S as a technique and format for specifying ‘semantic widgets’ that integrate querying and filtering of semantic data with defining their layout and presentation style. In addition, an editor has been developed that allows to create X3S templates in a direct manipulation style. The editor and the underlying format are evaluated against existing approaches by comparing their functional capabilities as well as in an initial user study.},
  isbn = {978-1-4503-1168-7},
  url = {http://doi.acm.org/10.1145/2305484.2305510},
  booktitle = {Proceedings of the 4th ACM SIGCHI Symposium on Engineering Interactive Computing Systems}
}


@inproceedings{ubo:32508,
  author = {Stegemann, Timo and Hussein, Tim and Gaulke, Werner and Ziegler, Jürgen},
  chapter = {},
  title = {X3S: Eine Spezifikation zur Darstellung und interaktiven Exploration semantischer Daten},
  year = {2011},
  abstract = {Die zunehmenden Wandlung des Internets von einem dokumentenzentrierten hin zu einem datenorientierten Netz eröffnet für Nutzer wie Entwickler eine Fülle an Möglichkeiten. Allerdings stoßen traditionelle Ansätze des Web Engineerings bei der Fülle und Heterogenität der Daten häufig an ihre Grenzen. In diesem Beitrag wird mit X3S eine Spezifikation zur Filterung sowie zur Darstellung semantischer Inhalte des Daten-Webs vorgestellt, der das Anlegen und Wiederverwenden von Bausteinen zur Datenexploration und -visualisierung ermöglicht.},
  url = {http://duepublico.uni-duisburg-essen.de/servlets/DocumentServlet?id=26874},
  booktitle = {IVDW ’11: Interaktion und Visualisierung im Daten-Web}
}


@inproceedings{ubo:32506,
  author = {Stegemann, Timo and Hussein, Tim and Gaulke, Werner and Ziegler, Jürgen},
  editor = {Diaz, Paloma and Hussein, Tim and Lohmann, Steffen and Ziegler, Jürgen},
  chapter = {},
  title = {Interacting with semantic data by using X3S},
  year = {2011},
  url = {http://duepublico.uni-duisburg-essen.de/servlets/DocumentServlet?id=26869},
  booktitle = {Proceedings of the 1st Workshop on Data-Centric Interactions on the Web}
}


@inproceedings{ubo:60527,
  author = {Heim, Philipp and Lohmann, Steffen and Stegemann, Timo},
  chapter = {},
  title = {Interactive Relationship Discovery via the Semantic Web},
  series = {Lecture Notes in Computer Science},
  year = {2010},
  publisher = {Springer-Verlag Berlin Heidelberg},
  address = {Berlin [u.a.]},
  volume = {6088},
  pages = {303–317},
  isbn = {978-3-642-13485-2},
  doi = {10.1007/978-3-642-13486-9_21},
  booktitle = {The Semantic Web: Research and Applications: 7th Extended Semantic Web Conference, ESWC 2010, Heraklion, Crete, Greece, May 30 –June 3, 2010, Proceedings, Part I}
}


@inproceedings{ubo:26021,
  author = {Lohmann, Steffen and Heim, Philipp and Stegemann, Timo and Ziegler, Jürgen},
  chapter = {},
  title = {The RelFinder User Interface: Interactive Exploration of Relationships between Objects of Interest},
  year = {2010},
  publisher = {ACM},
  address = {New York, NY},
  abstract = {Being aware of the relationships that exist between objects of interest is crucial in many situations. The RelFinder user interface helps to get an overview: Even large amounts of relationships can be visualized, filtered, and analyzed by the user. Common concepts of knowledge representation are exploited in order to support interactive exploration both on the level of global filters and single relationships. The RelFinder is easy-to-use and works on every RDF knowledge base that provides standardized SPARQL access.},
  isbn = {978-1-60558-515-4},
  booktitle = {Proceedings of the 14th International Conference on Intelligent User Interfaces (IUI 2010)}
}


@inproceedings{ubo:23495,
  author = {Heim, Philipp and Hellmann, Sebastian and Lehmann, Jens and Lohmann, Steffen and Stegemann, Timo},
  editor = {Chua, Tat-Seng and Kompatsiaris, Yiannis and Mérialdo, Bernard and Haas, Werner and Thallinger, Georg and Bailer, Werner},
  chapter = {},
  title = {RelFinder: Revealing Relationships in RDF Knowledge Bases},
  year = {2009},
  publisher = {Springer},
  address = {Berlin/Heidelberg},
  isbn = {978-3-642-10542-5},
  url = {http://www.uni-due.de/ s400268/RelFinder-SAMT09.pdf},
  booktitle = {Semantic Multimedia - Proceedings of the 4th International Conference on Semantic and Digital Media Technologies}
}


@incollection{ubo_mods_00022922,
  author = {Heim, Philipp and Stegemann, Timo and Lohmann, Steffen and Ziegler, Jürgen},
  editor = {Wandke, Hartmut and Kain, Saskia and Struve, Doreen},
  title = {Semantisch unterstützte Informationsextraktion aus Dokumentenmengen},
  booktitle = {Mensch & Computer 2009},
  year = {2009},
  publisher = {Oldenbourg},
  address = {München},
  pages = {415–418},
  isbn = {978-3-486-59222-1}
}


@inproceedings{ubo:22925,
  author = {Heim, Philipp and Stegemann, Timo and Lohmann, Steffen and Ziegler, Jürgen and Cyriaks, Haiko and Stolz, Horst},
  editor = {Auer, Sören and Lauenroth, Kim and Lohmann, Steffen and Riechert, Thomas},
  chapter = {},
  title = {InteractiveExtractor: Durchgängige Unterstützung bei der Extraktion von anforderungsrelevanten Informationen},
  year = {2009},
  address = {Leipzig},
  isbn = {978-3-941608-05-4},
  booktitle = {Agiles Requirements Engineering: für Softwareprojekte mit einer großen Anzahl verteilter Stakeholder}
}


@article{ubo:23929,
  author = {Lohmann, Steffen and Heim, Philipp and Stegemann, Timo and Tetzlaff, Lena and Ziegler, Jürgen},
  title = {Entdecken und Explorieren von Zusammenhängen im Semantic Web},
  journal = {i-com - Zeitschrift für interaktive und kooperative Medien},
  year = {2009},
  volume = {8},
  number = {3},
  pages = {33–39},
  issn = {1618-162X}
}