BibSonomy publications for /group/tagora/tagorapubFri Jan 22 11:48:22 CET 2010Berlin, HeidelbergSocial Semantic Web18363--391X.media.pressSocial Bookmarking am Beispiel BibSonomy20092009 itegpub myown tagorapub BibSonomy ist ein kooperatives Verschlagwortungssystem (Social Bookmarking System), betrieben vom Fachgebiet Wissensverarbeitung der Universit{\"a}t Kassel. Es erlaubt das Speichern und Organisieren von Web-Lesezeichen und Metadaten für wissenschaftlichePublikationen. In diesem Beitrag beschreiben wir die von BibSonomy bereitgestellte Funktionalit{\"a}t, die dahinter stehende Architektursowie das zugrunde liegende Datenmodell. Ferner erläutern wir Anwendungsbeispiele und gehen auf Methoden zur Analyse der in BibSonomy und ähnlichen Systemen enthaltenen Daten ein.Mon Nov 16 10:26:55 CET 2009Postproceedings of the International Conference on Knowledge Processing in Practice (KPP2007)A Comparison of content-based Tag Recommendations in Folksonomy Systems2009 (to appear)2009 content folksonomy itegpub nopaper recommendations recommender tag tagorapub Thu Oct 01 18:35:30 CEST 2009Proceedings of the Dagstuhl Seminar on Social Web CommunitiesAnalyzing Tag Semantics Across Collaborative Tagging Systems20082008 dagstuhl iin2009 itegpub myown tag_semantics tagorapub testttag Tue Sep 29 12:54:47 CEST 2009HeidelbergProc. First International Conference on Semantics And Digital Media Technology (SAMT) December56-70LNCSTrend Detection in Folksonomies43062006intranet 2006 trend pagerank hotho schmitz jaeschke l3s itegpub detection triadic stumme nepomuk folksonomy tagorapub folkrank UniK As the number of resources on the web exceeds by far the number ofdocuments one can track, it becomes increasingly difficult to remainup to date on ones own areas of interest. The problem becomes moresevere with the increasing fraction of multimedia data, from whichit is difficult to extract some conceptual description of theircontents.One way to overcome this problem are social bookmark tools, whichare rapidly emerging on the web. In such systems, users are settingup lightweight conceptual structures called folksonomies, andovercome thus the knowledge acquisition bottleneck. As more and morepeople participate in the effort, the use of a common vocabularybecomes more and more stable. We present an approach for discoveringtopic-specific trends within folksonomies. It is based on adifferential adaptation of the PageRank algorithm to the triadichypergraph structure of a folksonomy. The approach allows for anykind of data, as it does not rely on the internal structure of thedocuments. In particular, this allows to consider different datatypes in the same analysis step. We run experiments on a large-scalereal-world snapshot of a social bookmarking system.Tue Sep 29 12:35:44 CEST 2009Baden-BadenSocial Software in der WertschöpfungDas Entstehen von Semantik in BibSonomy2006tags semantik 2006 pagerank tagging association hotho bibsonomy schmitz jaeschke rules semantics stumme BibSonomy nepomuk folksonomy tagorapub folksonomies tagora folkrank UniK Immer mehr Soziale-Lesezeichen-Systeme entstehen im heutigen Web. In solchen Systemen erstellen die Nutzer leichtgewichtige begriffliche Strukturen, so genannte Folksonomies. Ihren Erfolg verdanken sie der Tatsache, dass man keine speziellen Fähigkeiten benötigt, um an der Gestaltung mitzuwirken. In diesem Artikel beschreiben wir unser System BibSonomy. Es erlaubt das Speichern, Verwalten und Austauschen sowohl von Lesezeichen (Bookmarks) als auch von Literaturreferenzen in Form von BibTeX-Einträgen. Die Entwicklung des verwendeten Vokabulars und der damit einhergehenden Entstehung einer gemeinsamen Semantik wird detailliert diskutiert.Tue Sep 29 10:41:51 CEST 2009Proceedings of the Second International Conference on Weblogs and Social Media(ICWSM 2008)Logsonomy -- A Search Engine Folksonomy20082008 engine folksonomies folksonomy itegpub logsonomies logsonomy search tagorapub In social bookmarking systems users describe bookmarks by keywords called tags. The structure behind these social systems, called folksonomies, can be viewed as a tripartite hypergraph of user, tag and resource nodes. This underlying network shows specific structural properties that explain its growth and the possibility of serendipitous exploration. Search engines filter the vast information of the web. Queries describe a user’s information need. In response to the displayed results of the search engine, users click on the links of the result page as they expect the answer to be of relevance. The clickdata can be represented as a folksonomy in which queries are descriptions of clicked URLs. This poster analyzes the topological characteristics of the resulting tripartite hypergraph of queries, users and bookmarks of two query logs and compares it two a snapshot of the folksonomy del.icio.us.Fri Sep 25 22:04:14 CEST 2009Berlin, HeidelbergSocial Semantic Web18363--391X.media.pressSocial Bookmarking am Beispiel BibSonomy20092009 itegpub l3s myown tagorapub BibSonomy ist ein kooperatives Verschlagwortungssystem (Social Bookmarking System), betrieben vom Fachgebiet Wissensverarbeitung der Universit{\"a}t Kassel. Es erlaubt das Speichern und Organisieren von Web-Lesezeichen und Metadaten für wissenschaftlichePublikationen. In diesem Beitrag beschreiben wir die von BibSonomy bereitgestellte Funktionalit{\"a}t, die dahinter stehende Architektursowie das zugrunde liegende Datenmodell. Ferner erläutern wir Anwendungsbeispiele und gehen auf Methoden zur Analyse der in BibSonomy und ähnlichen Systemen enthaltenen Daten ein.Thu Sep 17 10:23:45 CEST 2009Workshop Proceedings of Lernen - Wissensentdeckung - Adaptivität (LWA 2007)sephttp://lwa07.informatik.uni-halle.de/kdml07/kdml07.htm109--112Position Paper: Ontology Learning from Folksonomies20072007 diploma_thesis itegpub myown ontology_learning rel1 rel2 tagorapub Mon Sep 14 19:31:25 CEST 2009Patras, GreeceProceedings of the 3rd Workshop on Ontology Learning and Population (OLP3)JulyISBN 978-960-89282-6-839--43Semantic Analysis of Tag Similarity Measures in Collaborative Tagging Systems20082008 itegpub myown olp3 tag_relatedness tagorapub Social bookmarking systems allow users to organise collections of resources on the Web in a collaborative fashion. The increasing popularity of these systems as well as first insights into their emergent semantics have made them relevant to disciplines like knowledge extraction and ontology learning. The problem of devising methods to measure the semantic relatedness between tags and characterizing it semantically is still largely open. Here we analyze three measures of tag relatedness: tag co-occurrence, cosine similarity of co-occurrence distributions, and FolkRank, an adaptation of the PageRank algorithm to folksonomies. Each measure is computed on tags from a large-scale dataset crawled from the social bookmarking system del.icio.us. To provide a semantic grounding of our findings, a connection to WordNet (a semantic lexicon for the English language) is established by mapping tags into synonym sets of WordNet, and applying there well-known metrics of semantic similarity. Our results clearly expose different characteristics of the selected measures of relatedness, making them applicable to different subtasks of knowledge extraction such as synonym detection or discovery of concept hierarchies.Mon Sep 14 19:29:46 CEST 2009Workshop Proceedings of Lernen -- Wissensentdeckung -- Adaptivität (LWA 2007)September50-54Conceptual Clustering of Social Bookmark Sites20072007 Social bookmark bookmarking clustering collaborative conceptual folksonomies folksonomy itegpub social tagging tagorapub Mon Sep 14 19:12:46 CEST 2009HeidelbergThe Semantic Web -- ISWC 2008, Proc.Intl. Semantic Web Conference 2008615--631LNAISemantic Grounding of Tag Relatedness in Social Bookmarking Systems531820082008 grounding iswc2008 itegpub myown relatedness semantic similarity sw tag tagging tagorapub Collaborative tagging systems have nowadays become important data sources for populating semantic web applications. For tasks like synonym detection and discovery of concept hierarchies, many researchers introduced measures of tag similarity. Eventhough most of these measures appear very natural, their design often seems to be rather ad hoc, and the underlying assumptionson the notion of similarity are not made explicit. A more systematic characterization and validation of tag similarity interms of formal representations of knowledge is still lacking. Here we address this issue and analyze several measures oftag similarity: Each measure is computed on data from the social bookmarking system del.icio.us and a semantic grounding isprovided by mapping pairs of similar tags in the folksonomy to pairs of synsets in Wordnet, where we use validated measuresof semantic distance to characterize the semantic relation between the mapped tags. This exposes important features of theinvestigated similarity measures and indicates which ones are better suited in the context of a given semantic application.Mon Sep 14 18:22:52 CEST 2009Graz, Austria7th International Conference on Knowledge Management (I-KNOW '07)September356-364Conceptual Clustering of Social Bookmarking Sites20072007 folksonomies folksonomy itegpub sites social tagging tagorapub 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.Mon Sep 14 18:13:04 CEST 2009AalborgProceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures87-102{BibSonomy}: A Social Bookmark and Publication Sharing System20062006 FCA OntologyHandbook bibsonomy bookmarking folksonomy iccs l3s nepomuk social tagorapub Social bookmark tools are rapidly emerging on the Web. In such systems users are setting up lightweight conceptual structures called folksonomies. The reason for their immediate success is the fact that no specific skills are needed for participating. In this paper we specify a formal model for folksonomies and briefly describe our own system BibSonomy, which allows for sharing both bookmarks and publication references in a kind of personal library.Mon Sep 14 18:13:04 CEST 2009Banff, CanadaWorkshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at WWW 2007Organizing Publications and Bookmarks in BibSonomy20072007 BibSonomy bibsonomy challenge itegpub l3s organizing tagorapub Mon Sep 14 18:13:04 CEST 2009SeptemberProceedings of the Dagstuhl Seminar on Social Web Communities20082008 communities dagstuhl itegpub social tagora tagorapub web Mon Sep 14 18:13:04 CEST 2009Proc. of the Fourth International Workshop on Adversarial Information Retrieval on the WebThe Anti-Social Tagger - Detecting Spam in Social Bookmarking Systems20082.0 2008 bookmarking folksonomies folksonomy itegpub social spam systems tagger tagorapub web web2.0 Mon Sep 14 18:13:04 CEST 2009AI Communications Journal, Special Issue on ``Network Analysis in Natural Sciences and Engineering''4245-262Network Properties of Folksonomies2020072007 emergent fca folksonomies folksonomy itegpub l3s network semantics tagorapub Mon Sep 14 18:13:04 CEST 2009BonnInformatik 2006 -- Informatik für Menschen. Band 2OctoberProc. Workshop on Applications of Semantic Technologies, Informatik 2006Lecture Notes in InformaticsEmergent Semantics in BibSonomyP-9420062006 UniK bibsonomy emergence emergent folksonomy hotho itegpub jaeschke l3s nepomuk schmitz semantics stumme tagorapub Social bookmark tools are rapidly emerging on the Web. In such systems users are setting up lightweight conceptual structures called folksonomies. The reason for their immediate success is the fact that no specific skills are needed for participating. In this paper we specify a formal model for folksonomies, briefly describe our own system BibSonomy, which allows for sharing both bookmarks and publication references, and discuss first steps towards emergent semantics.Mon Sep 14 18:13:04 CEST 2009Glasgow, UK30th European Conference on IR Research, ECIR 2008April101-113Lecture Notes in Computer ScienceA Comparison of Social Bookmarking with Traditional Search495620082008 bookmarking itegpub logsonomies nopaper social tagorapub Mon Jul 20 16:58:20 CEST 2009Glasgow, UK30th European Conference on IR Research, ECIR 2008April101-113Lecture Notes in Computer ScienceA Comparison of Social Bookmarking with Traditional Search495620082008 bookmarking itegpub logsonomies myown social tagorapub