<rdf:RDF xmlns:community="http://www.bibsonomy.org/ontologies/2008/05/community#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:admin="http://webns.net/mvcb/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:syn="http://purl.org/rss/1.0/modules/syndication/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:taxo="http://purl.org/rss/1.0/modules/taxonomy/" xmlns:cc="http://web.resource.org/cc/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:swrc="http://swrc.ontoware.org/ontology#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns="http://purl.org/rss/1.0/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xml:base="http://www.bibsonomy.org/tag/bookmark"><owl:Ontology rdf:about=""><rdfs:comment>BibSonomy publications for /tag/bookmark</rdfs:comment><owl:imports rdf:resource="http://swrc.ontoware.org/ontology/portal"/></owl:Ontology><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2c9437d5ec56ba949f533aeec00f571e3/nosebrain"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2c9437d5ec56ba949f533aeec00f571e3/nosebrain"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/pub/pdf/benz2010social.pdf"/><swrc:date>Thu Jan 19 12:34:45 CET 2012</swrc:date><swrc:address>Berlin / Heidelberg</swrc:address><swrc:journal>The VLDB Journal</swrc:journal><swrc:month>dec</swrc:month><swrc:number>6</swrc:number><swrc:pages>849--875</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:title>The Social Bookmark and Publication Management System BibSonomy</swrc:title><swrc:volume>19</swrc:volume><swrc:year>2010</swrc:year><swrc:keywords>bibsonomy bookmark publication sharing social system </swrc:keywords><swrc:abstract>Social resource sharing systems are central elements of the Web 2.0 and use the same kind of lightweight knowledge representation, called folksonomy. Their large user communities and ever-growing networks of user-generated content have made them an attractive object of investigation for researchers from different disciplines like Social Network Analysis, Data Mining, Information Retrieval or Knowledge Discovery. In this paper, we summarize and extend our work on different aspects of this branch of Web 2.0 research, demonstrated and evaluated within our own social bookmark and publication sharing system BibSonomy, which is currently among the three most popular systems of its kind. We structure this presentation along the different interaction phases of a user with our system, coupling the relevant research questions of each phase with the corresponding implementation issues. This approach reveals in a systematic fashion important aspects and results of the broad bandwidth of folksonomy research like capturing of emergent semantics, spam detection, ranking algorithms, analogies to search engine log data, personalized tag recommendations and information extraction techniques. We conclude that when integrating a real-life application like BibSonomy into research, certain constraints have to be considered; but in general, the tight interplay between our scientific work and the running system has made BibSonomy a valuable platform for demonstrating and evaluating Web 2.0 research.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="1066-8888" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.1007/s00778-010-0208-4" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Dominik Benz"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Robert Jäschke"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Beate Krause"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Folke Mitzlaff"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_6><rdf:_7><swrc:Person swrc:name="Gerd Stumme"/></rdf:_7></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/25eb699b2e53803ca9e5fadf22d8b5966/iyas_hilal"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/25eb699b2e53803ca9e5fadf22d8b5966/iyas_hilal"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://dx.doi.org/10.1007/s00778-010-0208-4"/><swrc:date>Mon Oct 17 11:26:29 CEST 2011</swrc:date><swrc:address>Berlin / Heidelberg</swrc:address><swrc:journal>The VLDB Journal</swrc:journal><swrc:pages>849-875</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:title>The social bookmark and publication management system bibsonomy</swrc:title><swrc:volume>19</swrc:volume><swrc:year>2010</swrc:year><swrc:keywords>BibSonomy Web2.0 bookmark publication social </swrc:keywords><swrc:abstract>Social resource sharing systems are central elements of the Web 2.0 and use the same kind of lightweight knowledge representation, called folksonomy. Their large user communities and ever-growing networks of user-generated content have made them an attractive object of investigation for researchers from different disciplines like Social Network Analysis, Data Mining, Information Retrieval or Knowledge Discovery. In this paper, we summarize and extend our work on different aspects of this branch of Web 2.0 research, demonstrated and evaluated within our own social bookmark and publication sharing system BibSonomy, which is currently among the three most popular systems of its kind. We structure this presentation along the different interaction phases of a user with our system, coupling the relevant research questions of each phase with the corresponding implementation issues. This approach reveals in a systematic fashion important aspects and results of the broad bandwidth of folksonomy research like capturing of emergent semantics, spam detection, ranking algorithms, analogies to search engine log data, personalized tag recommendations and information extraction techniques. We conclude that when integrating a real-life application like BibSonomy into research, certain constraints have to be considered; but in general, the tight interplay between our scientific work and the running system has made BibSonomy a valuable platform for demonstrating and evaluating Web 2.0 research.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="1066-8888" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="Computer Science" swrc:key="keyword"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="6" swrc:key="issue"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="Knowledge &amp;amp; Data Engineering Group, Research Center for Information Systems Design, University of Kassel, Wilhelmshöher Allee 73, 34121 Kassel, Germany" swrc:key="affiliation"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.1007/s00778-010-0208-4" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Dominik Benz"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Robert Jäschke"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Beate Krause"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Folke Mitzlaff"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_6><rdf:_7><swrc:Person swrc:name="Gerd Stumme"/></rdf:_7></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2ec3c256e7d1f24cd9d407d3ce7e41d96/alexcunha"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2ec3c256e7d1f24cd9d407d3ce7e41d96/alexcunha"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://dblp.uni-trier.de/db/journals/www/www12.html#EdaYUU09"/><swrc:date>Fri Apr 08 14:49:25 CEST 2011</swrc:date><swrc:journal>World Wide Web</swrc:journal><swrc:number>4</swrc:number><swrc:pages>421-440</swrc:pages><swrc:title>The Effectiveness of Latent Semantic Analysis for Building Up a Bottom-up Taxonomy from Folksonomy Tags.</swrc:title><swrc:volume>12</swrc:volume><swrc:year>2009</swrc:year><swrc:keywords>semantic tagging taxonomy bookmark </swrc:keywords><swrc:abstract>In this paper, we evaluate the effectiveness of a semantic smoothing technique to organize folksonomy tags. Folksonomy tags have no explicit relations and vary because they form uncontrolled vocabulary. We discriminates so-called subjective tags like “cool�? and “fun�? from folksonomy tags without any extra knowledge other than folksonomy triples and use the level of tag generalization to form the objective tags into a hierarchy.We verify that entropy of folksonomy tags is an effective measure for discriminating subjective folksonomy tags. Our hierarchical tag allocation method guarantees the number of children nodes and increases the number of available paths to a target node compared to an existing tree allocation method for folksonomy tags.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="2010-08-15 15:00:40" swrc:key="timestamp"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="dbenz" swrc:key="username"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="http://dx.doi.org/10.1007/s11280-009-0069-1" swrc:key="ee"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="eda2009effectiveness.pdf:eda2009effectiveness.pdf:PDF" swrc:key="file"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="1" swrc:key="journalpub"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="public" swrc:key="groups"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Takeharu Eda"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Masatoshi Yoshikawa"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Toshio Uchiyama"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Tadasu Uchiyama"/></rdf:_4></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/221b9fe225dd544fdd2530a34dc6384be/lfkilcher"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/221b9fe225dd544fdd2530a34dc6384be/lfkilcher"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><swrc:date>Tue Apr 05 13:00:52 CEST 2011</swrc:date><swrc:journal>The VLDB Journal</swrc:journal><swrc:note>(to appear)</swrc:note><swrc:title>The Social Bookmark and Publication Management System BibSonomy</swrc:title><swrc:year>2010</swrc:year><swrc:keywords>2010 bibsonomy bookmark management php social </swrc:keywords><swrc:abstract>Social resource sharing systems are central elements
of theWeb 2.0 and use the same kind of lightweight knowledge
representation, called folksonomy. Their large user communities
and ever-growing networks of user-generated content have
made them an attractive object of investigation for researchers
from different disciplines like Social Network Analysis, Data
Mining, Information Retrieval or Knowledge Discovery. In this
paper, we summarize and extend our work on different aspects
of this branch of Web 2.0 research, demonstrated and evaluated
within our own social bookmark and publication sharing system
BibSonomy, which is currently among the three most popular
systems of its kind. We structure this presentation along
the different interaction phases of a user with our system, coupling
the relevant research questions of each phase with the
corresponding implementation issues. This approach reveals in
a systematic fashion important aspects and results of the broad
bandwidth of folksonomy research like capturing of emergent
semantics, spam detection, ranking algorithms, analogies to
search engine log data, personalized tag recommendations and
information extraction techniques. We conclude that when integrating
a real-life application like BibSonomy into research,
certain constraints have to be considered; but in general, the
tight interplay between our scientific work and the running system
has made BibSonomy a valuable platform for demonstrating
and evaluating Web 2.0 research.</swrc:abstract><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Dominik Benz"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Robert Jäschke"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Beate Krause"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Folke Mitzlaff"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_6><rdf:_7><swrc:Person swrc:name="Gerd Stumme"/></rdf:_7></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Klemens Böhm"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Laks V.S. Lakshmanan"/></rdf:_2></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2643156863e854c2e4cd16041e5398a51/alexcunha"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2643156863e854c2e4cd16041e5398a51/alexcunha"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><swrc:date>Fri Mar 25 18:18:30 CET 2011</swrc:date><swrc:booktitle>Proceedings of the IADIS International Conferences Collaborative Technologies 2010 and Web Based Communities 2010</swrc:booktitle><swrc:month>July</swrc:month><swrc:pages>178--182</swrc:pages><swrc:title>Towards A Multilingual Semantic Folksonomy</swrc:title><swrc:year>2010</swrc:year><swrc:keywords>semantic tagging bookmark </swrc:keywords><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Murad Magableh"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Antonio Cau"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Hussein Zedan"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Martin Ward"/></rdf:_4></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2a6f8bc8281fc0b1695fbc6ec7915c8cc/dbenz"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2a6f8bc8281fc0b1695fbc6ec7915c8cc/dbenz"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://citeseer.ist.psu.edu/abrams98information.html"/><swrc:date>Tue Feb 08 15:56:03 CET 2011</swrc:date><swrc:address>New York, NY, USA</swrc:address><swrc:booktitle>Proceedings of the SIGCHI conference on Human factors in computing systems</swrc:booktitle><swrc:pages>41-48</swrc:pages><swrc:publisher><swrc:Organization swrc:name="ACM Press/Addison-Wesley Publishing Co."/></swrc:publisher><swrc:title>Information Archiving with Bookmarks: Personal Web Space Construction and Organization</swrc:title><swrc:year>1998</swrc:year><swrc:keywords>studienarbeit information_space bookmark background www </swrc:keywords><swrc:abstract>Bookmarks are used as &#034;personal Web information spaces&#034; to help people remember and retrieve interesting Web pages. A study of personal Web information spaces surveyed 322 Web users and analyzed the bookmark archives of 50 Web users. The results of this study are used to address why people make bookmarks, and how they create, use, and organize them. Recommendations for improving the organization, visualization, representation, and integration of bookmarks are provided. The recommendations include simple mechanisms for filing bookmarks at creation time, the use of time-based visualizations with automated filters, the use of contextual information in representing bookmarks, and the combination of hierarchy formation and Web page authoring to aid in organizing and viewing bookmarks.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="2007-05-14" swrc:key="lastdatemodified"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="abrams1998information.pdf:abrams1998information.pdf:PDF" swrc:key="file"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="abrams98.pdf" swrc:key="pdf"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="Abrams" swrc:key="lastname"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="read" swrc:key="read"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="own" swrc:key="own"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="David Abrams"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Ronald Baecker"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Mark H. Chignell"/></rdf:_3></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/24b01e4d2cd9b20892adba7cc0e59929a/dbenz"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/24b01e4d2cd9b20892adba7cc0e59929a/dbenz"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://.acm.org/sigchi/chi97/proceedings/short-talk/da.htm"/><swrc:date>Tue Feb 08 15:55:59 CET 2011</swrc:date><swrc:address>Atlanta, GA, USA</swrc:address><swrc:booktitle>Proceedings of the CHI97: Conference on Human Factors in Computing Systems</swrc:booktitle><swrc:month>March 22-27</swrc:month><swrc:title>How People Use WWW bookmarks</swrc:title><swrc:year>1997</swrc:year><swrc:keywords>user_study studienarbeit bookmark informatin_space background www </swrc:keywords><swrc:abstract>In this detailed empirical study of WWW browsing and bookmarks we define a personal information space as having five basic properties paralleling those of a larger complex information space. We describe user behavior on the Web and show how a user&#039;s bookmark archive is a personal Web information space.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="2006-07-01" swrc:key="lastdatemodified"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="abrams1997how.pdf:abrams1997how.pdf:PDF" swrc:key="file"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="abrams97.pdf" swrc:key="pdf"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="Abrams" swrc:key="lastname"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="read" swrc:key="read"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="own" swrc:key="own"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="David Abrams"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Ron Baecker"/></rdf:_2></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Steven Pemberton"/></rdf:_1></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2f909bc2f43cc4a7e86d5b675944e24fd/dbenz"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2f909bc2f43cc4a7e86d5b675944e24fd/dbenz"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="/brokenurl#doi.acm.org/10.1145/276627.276667"/><swrc:date>Fri Jan 28 11:34:40 CET 2011</swrc:date><swrc:address>New York, NY, USA</swrc:address><swrc:booktitle>HYPERTEXT &#039;98: Proceedings of the ninth ACM conference on Hypertext and hypermedia : links, objects, time and space---structure in hypermedia systems</swrc:booktitle><swrc:pages>297--298</swrc:pages><swrc:publisher><swrc:Organization swrc:name="ACM Press"/></swrc:publisher><swrc:title>Dynamic bookmarks for the WWW</swrc:title><swrc:year>1998</swrc:year><swrc:keywords>studienarbeit widely_related bookmark navigation www user_behaviour_analysis link_analysis </swrc:keywords><swrc:abstract>This paper describes a management tool to support revisiting WWW pages, which we call “WWW Dynamic Bookmark (WDB).�? WDB watches and archives a user’s navigation behavior, analyses the archive, and shows analyzed results as clues for revisiting URLs. We have integrated link analysis and user behavior analysis to evaluate WWW page importance. WDB presents a list of sites that a user has visited, in importance order, via a landmark list in each site, and showing relationships among sites. Experimental implementation shows that importance calculation and structure displays help users to pick up useful URLs.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="2005-08-06" swrc:key="lastdatemodified"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="takano1998dynamic.pdf:takano1998dynamic.pdf:PDF" swrc:key="file"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="takano98.pdf" swrc:key="pdf"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="Takano" swrc:key="lastname"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="notread" swrc:key="read"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="own" swrc:key="own"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Hajime Takano"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Terry Winograd"/></rdf:_2></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2c9437d5ec56ba949f533aeec00f571e3/jaeschke"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2c9437d5ec56ba949f533aeec00f571e3/jaeschke"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/pub/pdf/benz2010social.pdf"/><swrc:date>Thu Jan 27 09:09:53 CET 2011</swrc:date><swrc:address>Berlin / Heidelberg</swrc:address><swrc:journal>The VLDB Journal</swrc:journal><swrc:month>dec</swrc:month><swrc:number>6</swrc:number><swrc:pages>849--875</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:title>The Social Bookmark and Publication Management System BibSonomy</swrc:title><swrc:volume>19</swrc:volume><swrc:year>2010</swrc:year><swrc:keywords>2010 bibsonomy bookmark collaborative folksonomy kde management myown publication system tagging top vldb </swrc:keywords><swrc:abstract>Social resource sharing systems are central elements of the Web 2.0 and use the same kind of lightweight knowledge representation, called folksonomy. Their large user communities and ever-growing networks of user-generated content have made them an attractive object of investigation for researchers from different disciplines like Social Network Analysis, Data Mining, Information Retrieval or Knowledge Discovery. In this paper, we summarize and extend our work on different aspects of this branch of Web 2.0 research, demonstrated and evaluated within our own social bookmark and publication sharing system BibSonomy, which is currently among the three most popular systems of its kind. We structure this presentation along the different interaction phases of a user with our system, coupling the relevant research questions of each phase with the corresponding implementation issues. This approach reveals in a systematic fashion important aspects and results of the broad bandwidth of folksonomy research like capturing of emergent semantics, spam detection, ranking algorithms, analogies to search engine log data, personalized tag recommendations and information extraction techniques. We conclude that when integrating a real-life application like BibSonomy into research, certain constraints have to be considered; but in general, the tight interplay between our scientific work and the running system has made BibSonomy a valuable platform for demonstrating and evaluating Web 2.0 research.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="1066-8888" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="Andreas" swrc:key="for"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Dominik Benz"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Robert Jäschke"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Beate Krause"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Folke Mitzlaff"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_6><rdf:_7><swrc:Person swrc:name="Gerd Stumme"/></rdf:_7></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/22cbd8e3236adea7c54779605a5aa4fd6/bjdmagazine"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/22cbd8e3236adea7c54779605a5aa4fd6/bjdmagazine"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/jaeschke/paper/hotho06bibsonomy.pdf"/><swrc:date>Sat Jan 08 19:44:56 CET 2011</swrc:date><swrc:address>Aalborg, Denmark</swrc:address><swrc:booktitle>Proceedings of the Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures</swrc:booktitle><swrc:month>July</swrc:month><swrc:publisher><swrc:Organization swrc:name="Aalborg University Press"/></swrc:publisher><swrc:title>{BibSonomy}: A Social Bookmark and Publication Sharing System</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>bibsonomy bookmark social </swrc:keywords><swrc:hasExtraField><swrc:Field swrc:value="87-7307-769-0" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="27" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Andreas Hotho"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Robert Jäschke"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Gerd Stumme"/></rdf:_4></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Aldo de Moor"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Simon Polovina"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Harry Delugach"/></rdf:_3></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/29379b41b7746768aeadfa5ea28fac4f6/flint63"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/29379b41b7746768aeadfa5ea28fac4f6/flint63"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><swrc:date>Thu Jan 06 14:48:21 CET 2011</swrc:date><swrc:journal>IT Professional</swrc:journal><swrc:number>4</swrc:number><swrc:pages>34-41</swrc:pages><swrc:title>Understanding Web 2.0</swrc:title><swrc:volume>9</swrc:volume><swrc:year>2007</swrc:year><swrc:keywords>application bookmark tagging zzz.a.it09 paper web blog ieee software newsfeeds v1010 social wiki </swrc:keywords><swrc:abstract>Web 2.0, the second phase in the Web&#039;s evolution, is attracting the attention of IT professionals, businesses, and Web users. Web 2.0 is also called the wisdom Web, people-centric Web, participative Web, and read/write Web. Web 2.0 harnesses the Web in a more interactive and collaborative manner, emphasizing peers&#039; social interaction and collective intelligence, and presents new opportunities for leveraging the Web and engaging its users more effectively. Within the last two to three years, Web 2.0, ignited by successful Web 2.0 based social applications such as MySpace, Flickr, and YouTube, has been forging new applications that were previously unimaginable.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="1520-9202" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="IEEE Digital Library:2007/Murugesan07itpro.pdf:PDF" swrc:key="file"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.1109/MITP.2007.78" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="San Murugesan"/></rdf:_1></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/25d9541d5e8470a1867d995d3e0514697/stumme"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/25d9541d5e8470a1867d995d3e0514697/stumme"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><owl:sameAs rdf:resource="http://dx.doi.org/10.1007/s00778-010-0208-4"/><swrc:date>Wed Dec 15 11:29:09 CET 2010</swrc:date><swrc:address>Berlin / Heidelberg</swrc:address><swrc:journal>The VLDB Journal</swrc:journal><swrc:publisher><swrc:Organization swrc:name="Springer"/></swrc:publisher><swrc:title>The social bookmark and publication management system BibSonomy</swrc:title><swrc:year>2010</swrc:year><swrc:keywords>2010 BibSonomy VLDB VLDBJ bookmark itegpub l3s management myown publication social system </swrc:keywords><swrc:abstract>Social resource sharing systems are central elements of the Web 2.0 and use the same kind of lightweight knowledge representation, called folksonomy. Their large user communities and ever-growing networks of user-generated content have made them an attractive object of investigation for researchers from different disciplines like Social Network Analysis, Data Mining, Information Retrieval or Knowledge Discovery. In this paper, we summarize and extend our work on different aspects of this branch of Web 2.0 research, demonstrated and evaluated within our own social bookmark and publication sharing system BibSonomy, which is currently among the three most popular systems of its kind. We structure this presentation along the different interaction phases of a user with our system, coupling the relevant research questions of each phase with the corresponding implementation issues. This approach reveals in a systematic fashion important aspects and results of the broad bandwidth of folksonomy research like capturing of emergent semantics, spam detection, ranking algorithms, analogies to search engine log data, personalized tag recommendations and information extraction techniques. We conclude that when integrating a real-life application like BibSonomy into research, certain constraints have to be considered; but in general, the tight interplay between our scientific work and the running system has made BibSonomy a valuable platform for demonstrating and evaluating Web 2.0 research.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="1066-8888" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.1007/s00778-010-0208-4" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Dominik Benz"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Robert Jäschke"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Beate Krause"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Folke Mitzlaff"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_6><rdf:_7><swrc:Person swrc:name="Gerd Stumme"/></rdf:_7></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/25854a71547051543dd3d3d5e2e2f2b67/chelsjmakely"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/25854a71547051543dd3d3d5e2e2f2b67/chelsjmakely"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006bibsonomy.pdf"/><swrc:date>Wed Nov 17 22:32:45 CET 2010</swrc:date><swrc:address>Aalborg</swrc:address><swrc:booktitle>Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures</swrc:booktitle><swrc:pages>87-102</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Aalborg Universitetsforlag"/></swrc:publisher><swrc:title>{BibSonomy}: A Social Bookmark and Publication Sharing System</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>bibsonomy bookmark folksonomy sharing </swrc:keywords><swrc:abstract>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.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="87-7307-769-0" swrc:key="isbn"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Andreas Hotho"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Robert Jäschke"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Gerd Stumme"/></rdf:_4></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Aldo de Moor"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Simon Polovina"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Harry Delugach"/></rdf:_3></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/25854a71547051543dd3d3d5e2e2f2b67/sdo"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/25854a71547051543dd3d3d5e2e2f2b67/sdo"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hotho2006bibsonomy.pdf"/><swrc:date>Mon Nov 08 11:52:23 CET 2010</swrc:date><swrc:address>Aalborg</swrc:address><swrc:booktitle>Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures</swrc:booktitle><swrc:pages>87-102</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Aalborg Universitetsforlag"/></swrc:publisher><swrc:title>{BibSonomy}: A Social Bookmark and Publication Sharing System</swrc:title><swrc:year>2006</swrc:year><swrc:keywords>2006 BibSonomy bookmark description folksonomy kde reference social system tutorial </swrc:keywords><swrc:abstract>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.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="87-7307-769-0" swrc:key="isbn"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Andreas Hotho"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Robert Jäschke"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Gerd Stumme"/></rdf:_4></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Aldo de Moor"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Simon Polovina"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Harry Delugach"/></rdf:_3></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/299cafad8ce2afb5879c6c85c14cc5259/sdo"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/299cafad8ce2afb5879c6c85c14cc5259/sdo"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="http://portal.acm.org/citation.cfm?doid=1557914.1557969#"/><swrc:date>Mon Nov 08 11:51:13 CET 2010</swrc:date><swrc:address>New York, NY, USA</swrc:address><swrc:booktitle>HT &#039;09: Proceedings of the 20th ACM Conference on Hypertext and Hypermedia</swrc:booktitle><swrc:month>jun</swrc:month><swrc:pages>323--324</swrc:pages><swrc:publisher><swrc:Organization swrc:name="ACM"/></swrc:publisher><swrc:title>Managing publications and bookmarks with BibSonomy</swrc:title><swrc:year>2009</swrc:year><swrc:keywords>2009 BibSonomy bookmark ht09 managing publications social-bookmarking </swrc:keywords><swrc:abstract>In this demo we present BibSonomy, a social bookmark and publication sharing system.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="978-1-60558-486-7" swrc:key="isbn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.1145/1557914.1557969" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Dominik Benz"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Folke Eisterlehner"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Andreas Hotho"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Robert Jäschke"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Beate Krause"/></rdf:_5><rdf:_6><swrc:Person swrc:name="Gerd Stumme"/></rdf:_6></rdf:Seq></swrc:author><swrc:editor><rdf:Seq><rdf:_1><swrc:Person swrc:name="Ciro Cattuto"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Giancarlo Ruffo"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Filippo Menczer"/></rdf:_3></rdf:Seq></swrc:editor></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2f369e989405ff2f523a360546f84ef90/flint63"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2f369e989405ff2f523a360546f84ef90/flint63"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Book"/><swrc:date>Sun Oct 31 22:43:49 CET 2010</swrc:date><swrc:address>Konstanz</swrc:address><swrc:publisher><swrc:Organization swrc:name="UVK"/></swrc:publisher><swrc:series>UTB</swrc:series><swrc:title>Social Web</swrc:title><swrc:volume>3065</swrc:volume><swrc:year>2008</swrc:year><swrc:keywords>information software bookmark newsfeeds tagging v1010 social book blog wiki management science </swrc:keywords><swrc:abstract>Wikis, Blogs und Podcasts erm{\&#034;o}glichen in zunehmendem Ma{\ss}e eine Interaktion zwischen den Besuchern einer Website und f{\&#034;u}hren zur Bildung von Gemeinschaften - eine in den Massenmedien bisher nicht erreichte Partizipation. Ausgehend von der Geschichte des Internets und einer Definition des Social Webs werden zun{\&#034;a}chst dessen Erscheinungsformen vorgestellt, verglichen und eingeordnet. Darauf folgt eine Beschreibung der technischen Grundlagen sowie der auftretenden Gruppenprozesse und der gesellschaftlichen Bedeutung. Anja Ebersbach und Markus Glaser sind Informationswissenschaftler und promovieren an der Universit{\&#034;a}t Konstanz. Richard Heigl ist promovierter Historiker und betreibt in Regensburg ein Unternehmen zur Entwicklung von Wikiprojekten.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="UTB Product page:http\://www.utb-shop.de/details.php?p_id=97081:URL;Amazon Search inside:http\://www.amazon.de/gp/reader/3825230651/:URL;Google Books:http\://books.google.de/books?isbn=978-3-8252-3065-4:URL" swrc:key="file"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="978-3-8252-3065-4" swrc:key="isbn"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Anja Ebersbach"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Markus Glaser"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Richard Heigl"/></rdf:_3></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2607acf189b005d905d0361372e5d4902/flint63"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2607acf189b005d905d0361372e5d4902/flint63"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><swrc:date>Fri Oct 29 16:56:33 CEST 2010</swrc:date><swrc:journal>Web Semantics</swrc:journal><swrc:number>1</swrc:number><swrc:pages>38-53</swrc:pages><swrc:title>Discovering Shared Conceptualizations in Folksonomies</swrc:title><swrc:volume>6</swrc:volume><swrc:year>2008</swrc:year><swrc:keywords>software ai bookmark tagging v1010 paper community semantic web ontology </swrc:keywords><swrc:abstract>Social bookmarking tools are rapidly emerging on the Web. In such systems users are setting up lightweight conceptual structures called folksonomies. Unlike ontologies, shared conceptualizations are not formalized, but rather implicit. We present a new data mining task, the mining of all frequent tri-concepts, together with an efficient algorithm, for discovering these implicit shared conceptualizations. Our approach extends the data mining task of discovering all closed itemsets to three-dimensional data structures to allow for mining folksonomies. We provide a formal definition of the problem, and present an efficient algorithm for its solution. Finally, we show the applicability of our approach on three large real-world examples.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="1570-8268" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="ScienceDirect:2008/JaeschkeHothoEtAl08jws.pdf:PDF" swrc:key="file"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.1016/j.websem.2007.11.004" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Robert J{\&#034;a}schke"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Christoph Schmitz"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Bernhard Ganter"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Gerd Stumme"/></rdf:_5></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/23146310319bd0c296933b24e721caea0/flint63"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/23146310319bd0c296933b24e721caea0/flint63"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><swrc:date>Fri Oct 29 16:56:32 CEST 2010</swrc:date><swrc:journal>AI Communications</swrc:journal><swrc:number>4</swrc:number><swrc:pages>231-247</swrc:pages><swrc:title>Tag Recommendations in Social Bookmarking Systems</swrc:title><swrc:volume>21</swrc:volume><swrc:year>2008</swrc:year><swrc:keywords>bookmark adaptive test tagging paper community assist interface algorithm ai software v1010 user </swrc:keywords><swrc:abstract>Collaborative tagging systems allow users to assign keywords – so called tags – to resources. Tags are used for navigation, finding resources and serendipitous browsing and thus provide an immediate benefit for users. These systems usually include tag recommendation mechanisms easing the process of finding good tags for a resource, but also consolidating the tag vocabulary across users. In practice, however, only very basic recommendation strategies are applied.In this paper we evaluate and compare several recommendation algorithms on large-scale real life datasets: an adaptation of user-based collaborative filtering, a graph-based recommender built on top of the FolkRank algorithm, and simple methods based on counting tag occurrences. We show that both FolkRank and collaborative filtering provide better results than non-personalized baseline methods. Moreover, since methods based on counting tag occurrences are computationally cheap, and thus usually preferable for real time scenarios, we discuss simple approaches for improving the performance of such methods. We show, how a simple recommender based on counting tags from users and resources can perform almost as good as the best recommender.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="0921-7126" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="IOS MetaPress:2008/JaeschkeMarinhoEtAl08aicom.pdf:PDF" swrc:key="file"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="10.3233/AIC-2008-0438" swrc:key="doi"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Robert J{\&#034;a}schke"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Leandro Marinho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Andreas Hotho"/></rdf:_3><rdf:_4><swrc:Person swrc:name="Lars Schmidt-Thieme"/></rdf:_4><rdf:_5><swrc:Person swrc:name="Gerd Stumme"/></rdf:_5></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2cb7dc25019f0cac33f993327f8567ef9/melnik"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2cb7dc25019f0cac33f993327f8567ef9/melnik"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#Article"/><swrc:date>Thu Oct 14 14:45:03 CEST 2010</swrc:date><swrc:journal>Journal of Computational and Graphical Statistics</swrc:journal><swrc:number>3</swrc:number><swrc:pages>299--314</swrc:pages><swrc:title>{R: A Language for Data Analysis and Graphics}</swrc:title><swrc:volume>5</swrc:volume><swrc:year>1996</swrc:year><swrc:keywords>analysis bookmark data graphics language </swrc:keywords><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Ross Ihaka"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Robert Gentleman"/></rdf:_2></rdf:Seq></swrc:author></rdf:Description><rdf:Description rdf:about="http://www.bibsonomy.org/bibtex/2334d3ab11400c4a3ea3ed5b1e95c1855/sdo"><owl:sameAs rdf:resource="http://www.bibsonomy.org/uri/bibtex/2334d3ab11400c4a3ea3ed5b1e95c1855/sdo"/><rdf:type rdf:resource="http://swrc.ontoware.org/ontology#InProceedings"/><owl:sameAs rdf:resource="/brokenurl#www.tagora-project.eu/wp-content/2007/06/grahl_iknow07.pdf"/><swrc:date>Wed Jun 30 10:18:11 CEST 2010</swrc:date><swrc:address>Graz, Austria</swrc:address><swrc:booktitle>7th International Conference on Knowledge Management (I-KNOW &#039;07)</swrc:booktitle><swrc:month>sep</swrc:month><swrc:pages>356-364</swrc:pages><swrc:publisher><swrc:Organization swrc:name="Know-Center"/></swrc:publisher><swrc:title>Conceptual Clustering of Social Bookmarking Sites</swrc:title><swrc:year>2007</swrc:year><swrc:keywords>clustering conceptual sites social bookmark </swrc:keywords><swrc:abstract>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.</swrc:abstract><swrc:hasExtraField><swrc:Field swrc:value="0948-695x" swrc:key="issn"/></swrc:hasExtraField><swrc:hasExtraField><swrc:Field swrc:value="14" swrc:key="vgwort"/></swrc:hasExtraField><swrc:author><rdf:Seq><rdf:_1><swrc:Person swrc:name="Miranda Grahl"/></rdf:_1><rdf:_2><swrc:Person swrc:name="Andreas Hotho"/></rdf:_2><rdf:_3><swrc:Person swrc:name="Gerd Stumme"/></rdf:_3></rdf:Seq></swrc:author></rdf:Description><foaf:Group rdf:about="http://www.bibsonomy.org/tag/bookmark"><foaf:name>bookmark</foaf:name><description>Community for tag(s) bookmark</description></foaf:Group></rdf:RDF>
