BINGO! Ein thematisch fokussierender Crawler zur Generierung personalisierter Ontologien. - Martin Theobald; Stefan Siersdorfer; Sergej Sizov (GI Jahrestagung, 2002)

The BINGO! Focused Crawler: From Bookmarks to Archetypes. - Sergej Sizov; Stefan Siersdorfer; Martin Theobald; Gerhard Weikum (ICDE, 2002)

BINGO!: Bookmark-Induced Gathering of Information. - Sergej Sizov; Martin Theobald; Stefan Siersdorfer; Gerhard Weikum (WISE, 2002)

Konstruktion von Featureräumen und Metaverfahren zur Klassifikation von Webdokumenten. - Stefan Siersdorfer; Sergej Sizov (BTW, 2003)

The BINGO! System for Information Portal Generation and Expert Web Search. - Sergej Sizov; Martin Theobald; Stefan Siersdorfer; Gerhard Weikum; Jens Graupmann; Michael Biwer; Patrick Zimmer (CIDR, 2003)

Goal-oriented methods and meta methods for document classification and their parameter tuning. - Stefan Siersdorfer; Sergej Sizov; Gerhard Weikum (CIKM, 2004)

Restrictive clustering and metaclustering for self-organizing document collections. - Stefan Siersdorfer; Sergej Sizov (SIGIR, 2004)

Using Restrictive Classification and Meta Classification for Junk Elimination. - Stefan Siersdorfer; Gerhard Weikum (ECIR, 2005)

Automated Retraining Methods for Document Classification and Their Parameter Tuning. - Stefan Siersdorfer; Gerhard Weikum (WISE, 2005)

A neighborhood-based approach for clustering of linked document collections. - Ralitsa Angelova; Stefan Siersdorfer (CIKM, 2006)

Automatic Document Organization in a P2P Environment. - Stefan Siersdorfer; Sergej Sizov (ECIR, 2006)

Combination methods for automatic document organization. - Stefan Siersdorfer (2006)

Multilingual Text Classification Using Ontologies. - Gerard de Melo; Stefan Siersdorfer (ECIR, 2007)

Visualising the south Yorkshire floods of '07. - Paul D. Clough; Robert C. Pasley; Stefan Siersdorfer; José San Pedro; Mark Sanderson (GIR, 2007)

Know the Right People? Recommender Systems for Web 2.0. - Stefan Siersdorfer; Sergej Sizov; Paul D. Clough (LWA, 2007)

Workshop PC Chairs' Message. - Stefan Siersdorfer; Sergej Sizov (WISE Workshops, 2007)

International workshop on recommendation and collaboration (ReColl 2008). - Lawrence D. Bergman; Jihie Kim; Bamshad Mobasher; Stefan M. Rüger; Stefan Siersdorfer; Sergej Sizov; Markus Stolze (IUI, 2008)

Meta methods for model sharing in personal information systems. - Stefan Siersdorfer; Sergej Sizov (ACM Trans. Inf. Syst., 2008)

Social recommender systems for web 2.0 folksonomies. - Stefan Siersdorfer; Sergej Sizov (Hypertext, 2009)

Automatic video tagging using content redundancy. - Stefan Siersdorfer; José San Pedro; Mark Sanderson (SIGIR, 2009)

Ranking and classifying attractiveness of photos in folksonomies. - José San Pedro; Stefan Siersdorfer (WWW, 2009)

Analyzing and predicting sentiment of images on the social web. - Stefan Siersdorfer; Enrico Minack; Fan Deng 004; Jonathon S. Hare (ACM Multimedia, 2010)

Optimizing Near Duplicate Detection for P2P Networks. - Odysseas Papapetrou; Sukriti Ramesh; Stefan Siersdorfer; Wolfgang Nejdl (Peer-to-Peer Computing, 2010)

Image and Collateral Text in Support of Auto-Annotation and Sentiment Analysis. - Pamela Zontone; Giulia Boato; Jonathon S. Hare; Paul H. Lewis; Stefan Siersdorfer; Enrico Minack (TextGraphs@ACL, 2010)

Dear search engine: what's your opinion about...?: sentiment analysis for semantic enrichment of web search results. - Gianluca Demartini; Stefan Siersdorfer (SEMSEARCH@WWW, 2010)

How useful are your comments?: analyzing and predicting youtube comments and comment ratings. - Stefan Siersdorfer; Sergiu Chelaru; Wolfgang Nejdl; José San Pedro (WWW, 2010)

Detect'11: international workshop on DETecting and Exploiting Cultural diversiTy on the social web. - Sergej Sizov; Stefan Siersdorfer; Thomas Gottron; Philipp Sorg (CIKM, 2011)

Analyzing Political Trends in the Blogosphere. - Gianluca Demartini; Stefan Siersdorfer; Sergiu Chelaru; Wolfgang Nejdl (ICWSM, 2011)

Collaborative classification over P2P networks. - Odysseas Papapetrou; Wolf Siberski; Stefan Siersdorfer (WWW (Companion Volume), 2011)

Developing metrics to characterize Flickr groups. - Andrew M. Cox 001; Paul D. Clough; Stefan Siersdorfer (J. Assoc. Inf. Sci. Technol., 2011)

Content redundancy in YouTube and its application to video tagging. - José San Pedro; Stefan Siersdorfer; Mark Sanderson (ACM Trans. Inf. Syst., 2011)

Efficient jaccard-based diversity analysis of large document collections. - Fan Deng 004; Stefan Siersdorfer; Sergej Zerr (CIKM, 2012)

PicAlert!: a system for privacy-aware image classification and retrieval. - Sergej Zerr; Stefan Siersdorfer; Jonathon S. Hare (CIKM, 2012)

Analyzing the Polarity of Opinionated Queries. - Sergiu Chelaru; Ismail Sengör Altingövde; Stefan Siersdorfer (ECIR, 2012)

Privacy-aware image classification and search. - Sergej Zerr; Stefan Siersdorfer; Jonathon S. Hare; Elena Demidova (SIGIR, 2012)

Extracting Event-Related Information from Article Updates in Wikipedia. - Mihai Georgescu; Nattiya Kanhabua; Daniel Krause 002; Wolfgang Nejdl; Stefan Siersdorfer (ECIR, 2013)

Generating contextualized sentiment lexica based on latent topics and user ratings. - Ralf Krestel; Stefan Siersdorfer (HT, 2013)

Temporal summarization of event-related updates in wikipedia. - Mihai Georgescu; Dang Duc Pham; Nattiya Kanhabua; Sergej Zerr; Stefan Siersdorfer; Wolfgang Nejdl (WWW (Companion Volume), 2013)

Analyzing, Detecting, and Exploiting Sentiment in Web Queries. - Sergiu Chelaru; Ismail Sengör Altingövde; Stefan Siersdorfer; Wolfgang Nejdl (ACM Trans. Web, 2013)

Competitive Game Designs for Improving the Cost Effectiveness of Crowdsourcing. - Markus Rokicki; Sergiu Chelaru; Sergej Zerr; Stefan Siersdorfer (CIKM, 2014)

NicePic!: a system for extracting attractive photos from flickr streams. - Sergej Zerr; Stefan Siersdorfer; José San Pedro; Jonathon S. Hare; Xiaofei Zhu (SIGIR, 2014)

Analyzing and Mining Comments and Comment Ratings on the Social Web. - Stefan Siersdorfer; Sergiu Chelaru; José San Pedro; Ismail Sengör Altingövde; Wolfgang Nejdl (ACM Trans. Web, 2014)

Who With Whom And How?: Extracting Large Social Networks Using Search Engines. - Stefan Siersdorfer; Philipp Kemkes; Hanno Ackermann; Sergej Zerr (CIKM, 2015)

Groupsourcing: Team Competition Designs for Crowdsourcing. - Markus Rokicki; Sergej Zerr; Stefan Siersdorfer (WWW, 2015)

Efficient model sharing for scalable collaborative classification. - Odysseas Papapetrou; Wolf Siberski; Stefan Siersdorfer (Peer-to-Peer Netw. Appl., 2015)

Cobwebs from the Past and Present: Extracting Large Social Networks using Internet Archive Data. - Miroslav Shaltev; Jan-Hendrik Zab; Philipp Kemkes; Stefan Siersdorfer; Sergej Zerr (SIGIR, 2016)

Just in Time: Controlling Temporal Performance in Crowdsourcing Competitions. - Markus Rokicki; Sergej Zerr; Stefan Siersdorfer (WWW, 2016)

Structure-Aware Visualization of Text Corpora. - Jaspreet Singh; Sergej Zerr; Stefan Siersdorfer (CHIIR, 2017)