TY - UNPB AU - Falkowski, Tanja AU - Barth, Anja A2 - T1 - Density-based Temporal Graph Clustering for Subgroup Detection in Social Networks PY - 2007/ SP - EP - UR - M3 - KW - clustering KW - networks KW - sna KW - social KW - subgroups L1 - N1 - N1 - AB - ER - TY - UNPB AU - Falkowski, Tanja AU - Barth, Anja A2 - T1 - Density-based Temporal Graph Clustering for Subgroup Detection in Social Networks PY - 2007/ SP - EP - UR - M3 - KW - clustering KW - networks KW - sna KW - social KW - subgroups L1 - N1 - Tanja Falkowski N1 - AB - ER - TY - CONF AU - Grahl, Miranda AU - Hotho, Andreas AU - Stumme, Gerd A2 - Hinneburg, Alexander T1 - Conceptual Clustering of Social Bookmark Sites T2 - Workshop Proceedings of Lernen -- Wissensentdeckung -- Adaptivität (LWA 2007) PB - Martin-Luther-Universität Halle-Wittenberg CY - PY - 2007/10 M2 - VL - IS - SP - 50 EP - 54 UR - http://www.kde.cs.uni-kassel.de/hotho/pub/2007/kdml_recommender_final.pdf M3 - KW - 2007 KW - Social KW - bookmark KW - bookmarking KW - clustering KW - collaborative KW - conceptual KW - folksonomies KW - folksonomy KW - itegpub KW - myown KW - social KW - tagging KW - tagorapub L1 - SN - 978-3-86010-907-6 N1 - N1 - AB - ER - TY - CONF AU - Grahl, Miranda AU - Hotho, Andreas AU - Stumme, Gerd A2 - Hinneburg, Alexander T1 - Conceptual Clustering of Social Bookmark Sites T2 - Workshop Proceedings of Lernen -- Wissensentdeckung -- Adaptivität (LWA 2007) PB - Martin-Luther-Universität Halle-Wittenberg CY - PY - 2007/10 M2 - VL - IS - SP - 50 EP - 54 UR - http://www.kde.cs.uni-kassel.de/hotho/pub/2007/kdml_recommender_final.pdf M3 - KW - 2007 KW - Social KW - bookmark KW - bookmarking KW - clustering KW - collaborative KW - conceptual KW - folksonomies KW - folksonomy KW - itegpub KW - myown KW - social KW - tagging KW - tagorapub L1 - SN - 978-3-86010-907-6 N1 - Publications of Gerd Stumme N1 - AB - ER - TY - CONF AU - Grahl, Miranda AU - Hotho, Andreas AU - Stumme, Gerd A2 - Hinneburg, Alexander T1 - Conceptual Clustering of Social Bookmark Sites T2 - Workshop Proceedings of Lernen - Wissensentdeckung - Adaptivität (LWA 2007) PB - Martin-Luther-Universität Halle-Wittenberg CY - PY - 2007/10 M2 - VL - IS - SP - 50 EP - 54 UR - http://www.kde.cs.uni-kassel.de/hotho/pub/2007/kdml_recommender_final.pdf M3 - KW - 2007 KW - bookmarking KW - clustering KW - collaborative KW - folksonomy KW - myown KW - social L1 - SN - 978-3-86010-907-6 N1 - N1 - AB - ER - TY - CONF AU - Grahl, Miranda AU - Hotho, Andreas AU - Stumme, Gerd A2 - T1 - Conceptual Clustering of Social Bookmarking Sites T2 - 7th International Conference on Knowledge Management (I-KNOW '07) PB - Know-Center CY - Graz, Austria PY - 2007/10 M2 - VL - IS - SP - 356 EP - 364 UR - /brokenurl#www.tagora-project.eu/wp-content/2007/06/grahl_iknow07.pdf M3 - KW - clustering KW - conceptual KW - sites KW - social KW - bookmark L1 - SN - N1 - N1 - AB - Currently, social bookmarking systems provide intuitive support for browsing locally their content. A global view is usually presented by the tag cloud of the system, but it does not allow a conceptual drill-down, e. g., along a conceptual hierarchy. In this paper, we present a clustering approach for computing such a conceptual hierarchy for a given folksonomy. The hierarchy is complemented with ranked lists of users and resources most related to each cluster. The rankings are computed using our FolkRank algorithm. We have evaluated our approach on large scale data from the del.icio.us bookmarking system. ER - TY - CONF AU - Grahl, Miranda AU - Hotho, Andreas AU - Stumme, Gerd A2 - T1 - Conceptual Clustering of Social Bookmarking Sites T2 - 7th International Conference on Knowledge Management (I-KNOW '07) PB - Know-Center CY - Graz, Austria PY - 2007/10 M2 - VL - IS - SP - 356 EP - 364 UR - M3 - KW - 2007 KW - bookmarking KW - clustering KW - conceptual KW - folksonomy KW - kdubiq KW - myown KW - social KW - sosbuch KW - summerschool KW - tagging KW - taggingsurvey L1 - SN - N1 - N1 - AB - Currently, social bookmarking systems provide intuitive support for browsing locally their content. A global view is usually presented by the tag cloud of the system, but it does not allow a conceptual drill-down, e. g., along a conceptual hierarchy. In this paper, we present a clustering approach for computing such a conceptual hierarchy for a given folksonomy. The hierarchy is complemented with ranked lists of users and resources most related to each cluster. The rankings are computed using our FolkRank algorithm. We have evaluated our approach on large scale data from the del.icio.us bookmarking system. ER - TY - RPRT AU - Heymann, Paul AU - Garcia-Molina, Hector A2 - T1 - Collaborative Creation of Communal Hierarchical Taxonomies in Social Tagging Systems PB - Computer Science Department AD - PY - 2006/04 VL - IS - 2006-10 SP - EP - UR - http://dbpubs.stanford.edu:8090/pub/2006-10 M3 - KW - clustering KW - collaborative KW - folksonomy KW - kdubiq KW - ol KW - social KW - sosbuch KW - summerschool KW - tagging KW - taggingsurvey KW - taxonomy KW - webzu L1 - N1 - N1 - N1 - AB - Collaborative tagging systems---systems where many casual users annotate objects with free-form strings (tags) of their choosing---have recently emerged as a powerful way to label and organize large collections of data. During our recent investigation into these types of systems, we discovered a simple but remarkably effective algorithm for converting a large corpus of tags annotating objects in a tagging system into a navigable hierarchical taxonomy of tags. We first discuss the algorithm and then present a preliminary model to explain why it is so effective in these types of systems. ER - TY - JOUR AU - Newman, M.E.J. T1 - Fast algorithm for detecting community structure in networks JO - Physical Review E PY - 2003/10 VL - 69 IS - SP - EP - UR - http://arxiv.org/abs/cond-mat/0309508 M3 - KW - algorithm KW - clustering KW - community KW - gn KW - modularity KW - network KW - social L1 - SN - N1 - N1 - AB - ER -