@inproceedings{Jaeschke2008logsonomy, title = {Logsonomy -- A Search Engine Folksonomy}, address = {Menlo Park, CA, USA}, author = {Robert Jäschke and Beate Krause and Andreas Hotho and Gerd Stumme}, booktitle = {Proceedings of the Second International Conference on Weblogs and Social Media (ICWSM 2008)}, pages = {192--193}, publisher = {AAAI Press}, year = 2008, url = {http://www.kde.cs.uni-kassel.de/hotho/pub/2008/Krause2008logsonomy_short.pdf}, abstract = {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.}, biburl = {http://www.bibsonomy.org/bibtex/27eb26a177187ea8cf788cc897d66ee48/nepomuk}, keywords = {2008 engine folksonomy from:jaeschke l3s logsonomy myown search wp5}, isbn = {978-1-57735-355-3}, vgwort = {7}} @inproceedings{SemantaScerrie3cCEC2009, title = {Semanta - Supporting Email Workflows in Business Processes}, author = {Simon Scerri and Brian Davis and Siegfried and Handschuh}, editor = {Proceedings of the 11th IEEE Conference on Commerce and Enterprise Computing (CEC’09) (demo)}, year = 2009, biburl = {http://www.bibsonomy.org/bibtex/24c1a06f90166f2961b7f3bb84b0eac7b/nepomuk}, keywords = {business email from:irrecs process scerri semanta semantic simon sys:relevantFor:nepomuk sys:relevantFor:smile workflow}, } @inproceedings{SemantaScerriESWC2009, title = {Semanta - Semantic Email made easy}, author = {Simon Scerri and Brian Davis and Siegfried Handschuh and Manfred Hauswirth}, booktitle = {Proceedings of the 6th European Semantic Web Conference (to appear)}, year = 2009, biburl = {http://www.bibsonomy.org/bibtex/297968d3258e50125e43d65c81dc6daf0/nepomuk}, keywords = {Email Scerri Semanta Semantic Simon desktop evaluation from:irrecs semantic social sys:relevantFor:nepomuk sys:relevantFor:smile workflow}, } @inproceedings{krause2008logsonomy, title = {Logsonomy - Social Information Retrieval with Logdata}, address = {New York, NY, USA}, author = {Beate Krause and Robert Jäschke and Andreas Hotho and Gerd Stumme}, booktitle = {HT '08: Proceedings of the Nineteenth ACM Conference on Hypertext and Hypermedia}, pages = {157--166}, publisher = {ACM}, year = 2008, url = {http://portal.acm.org/citation.cfm?id=1379092.1379123&coll=ACM&dl=ACM&type=series&idx=SERIES399&part=series&WantType=Journals&title=Proceedings%20of%20the%20nineteenth%20ACM%20conference%20on%20Hypertext%20and%20hypermedia}, abstract = {Social bookmarking systems constitute an established part of the Web 2.0. In such 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. Today’s search engines represent the gateway to retrieve information from the World Wide Web. Short queries typically consisting of two to three words 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. This clickdata can be represented as a folksonomy in which queries are descriptions of clicked URLs. The resulting network structure, which we will term logsonomy is very similar to the one of folksonomies. In order to find out about its properties, we analyze the topological characteristics of the tripartite hypergraph of queries, users and bookmarks on a large snapshot of del.icio.us and on query logs of two large search engines. All of the three datasets show small world properties. The tagging behavior of users, which is explained by preferential attachment of the tags in social bookmark systems, is reflected in the distribution of single query words in search engines. We can conclude that the clicking behaviour of search engine users based on the displayed search results and the tagging behaviour of social bookmarking users is driven by similar dynamics.}, biburl = {http://www.bibsonomy.org/bibtex/2e64d14f3207766f4afc65983fa759ffe/nepomuk}, keywords = {2008 analysis engine from:jaeschke information l3s logsonomy myown network retrieval search social wp5}, location = {Pittsburgh, PA, USA}, isbn = {978-1-59593-985-2}, vgwort = {17}, doi = {http://doi.acm.org/10.1145/1379092.1379123}} @inproceedings{Scerri2008semanticemail, title = {The path towards Semantic Email: Summary and Outlook}, author = {Simon Scerri Brian Davis Siegfried Handschuh}, year = 2008, abstract = {In this paper we provide a summary of work that has been pursued in the area of Semantic Email, with a particular focus on our work in the area. The aim of this paper is to provide a status quo for this topic, as well as to generate ideas and discussions that could evolve the topic and take it to new heights. We finish off by outlining future directions for evaluation, improvement as well as extension of our current technologies.}, biburl = {http://www.bibsonomy.org/bibtex/2a815716e0ed34426ca5e3a62b89d5d6c/nepomuk}, keywords = {from:siggi smilegroup}, } @incollection{citeulike:4039710, title = {RoundTrip Ontology Authoring}, author = {Brian Davis and Ahmad Iqbal and Adam Funk and Valentin Tablan and Kalina Bontcheva and Hamish Cunningham and Siegfried Handschuh}, journal = {The Semantic Web - ISWC 2008}, pages = {50--65}, year = 2008, url = {http://dx.doi.org/10.1007/978-3-540-88564-1\_4}, abstract = {Controlled Language (CL) for Ontology Editing tools offer an attractive alternative for naive users wishing to create ontologies, but they are still required to spend time learning the correct syntactic structures and vocabulary in order to use the Controlled Language properly. This paper extends previous work (CLOnE) which uses standard NLP tools to process the language and manipulate an ontology. Here we also generate text in the CL from an existing ontology using template-based (or shallow) Natural Language Generation (NLG). The text generator and the CLOnE authoring process combine to form a RoundTrip Ontology Authoring environment: one can start with an existing imported ontology or one originally produced using CLOnE, (re)produce the Controlled Language, modify or edit the text as required and then turn the text back into the ontology in the CLOnE environment. Building on previous methodology we undertook an evaluation, comparing the RoundTrip Ontology Authoring process with a well-known ontology editor; where previous work required a CL reference manual with several examples in order to use the controlled language, the use of NLG reduces this learning curve for users and improves on existing results for basic ontology editing tasks.}, biburl = {http://www.bibsonomy.org/bibtex/268c730408ca714d95aabcfc2313ab69d/nepomuk}, keywords = {authoring controlledLanguage from:siggi language ontology roundtrip smilegroup}, posted-at = {2009-02-12 17:43:48}, citeulike-article-id = {4039710}, priority = {2}, doi = {http://dx.doi.org/10.1007/978-3-540-88564-1\_4}} @inproceedings{4314, title = {Personal and Group Knowledge Management with the Social Semantic Desktop }, author = {Niki Papailiou and Costas Christidis and Dimitris Apostolou and Gregoris Mentzas and Rosa Gudjonsdottir}, booktitle = {Collaboration and the Knowledge Economy: issues, Applications and Case Studies}, editor = {O. Cunnigham and M. Cunnigham}, year = 2008, biburl = {http://www.bibsonomy.org/bibtex/2b8945d730e4056d6d354459347a8a576/nepomuk}, keywords = {ICCS KTH WP9000 from:dapost nepomuk}, } @inproceedings{tetradio1, title = {Social Networks for Knowledge Management in Management Consulting Firms}, author = {Niki Papailiou and Dimitris Apostolou and Gregoris Mentzas}, year = 2007, abstract = {This paper seeks to review the role of social networks in knowledge management in the business context of consulting firms. Real cases are used to illustrate knowledge management efforts in consultancies. Based on the case study findings, we identify social networks as key ingredients of knowledge management in consulting firms. Therefore, we discuss social networks aspects and provide an account of relevant collaborative knowledge management tools supporting knowledge sharing within social networks.}, biburl = {http://www.bibsonomy.org/bibtex/240e67280eea74e047fe3b79093556f62/nepomuk}, keywords = {from:dapost knowledge management networks social}, } @inproceedings{4317, title = {Exploring Knowledge Management with a Social Semantic Desktop Architecture}, author = {Niki Papailiou and Dimitris Apostolou and Dimitris Panagiotou and Gregoris Mentzas}, booktitle = {DEXA 2007}, editor = {R. Wagner and N. Revell and G. Pernul}, pages = {213-222}, publisher = {LNCS 4653}, year = 2007, biburl = {http://www.bibsonomy.org/bibtex/26aaf4a44d1b7ee03ba5edec5cbe22d25/nepomuk}, keywords = {ICCS WP9000 from:dapost nepomuk}, } @article{4315, title = {Managing Knowledge at Multiple Organizational Levels Using Faceted Ontologies}, author = {Dimitris Apostolou and Gregoris Mentzas and Andreas Abecker}, journal = {Journal of Computer Information Systems}, pages = {32-49}, volume = {Winter 2008-2009}, year = 2008, biburl = {http://www.bibsonomy.org/bibtex/2f725dcb2da006e880a161e84b967fcce/nepomuk}, keywords = {FZI ICCS WP9000 from:dapost nepomuk}, } @article{4316, title = {Developing Knowledge Networks: A Practical Methodology and Experiences from Cases}, author = {Dimitris Apostolou and Niki Papailiou and Gregoris Mentzas}, journal = {International Journal of Knowledge Management Studies }, number = {3/4}, pages = {330-355}, volume = 1, year = 2007, biburl = {http://www.bibsonomy.org/bibtex/25e88ff89b51411fc3205390dd4ffecc3/nepomuk}, keywords = {ICCS WP9000 from:dapost nepomuk}, } @inproceedings{Kawase2009, title = {Incremental End-User Query Construction for the Semantic Desktop}, address = {Lisboa, Protugal}, author = {Ricardo Kawase and Enrico Minack and Wolfgang Nejdl and Samur Araújo and Daniel Schwabe}, booktitle = {International Conference on Web Information Systems and Technologies (WEBIST)}, year = 2009, biburl = {http://www.bibsonomy.org/bibtex/269154807daccfd5a4e4c72cbc2e40708/nepomuk}, keywords = {Desktop L3S NEPOMUK Nepomuk Semantic WP2 from:mie}, } @inproceedings{conf/semweb/MinackSZZ08, title = {SUITS4RDF: Incremental Query Construction for the Semantic Web.}, author = {Enrico Minack and Wolf Siberski and Gideon Zenz and Xuan Zhou}, booktitle = {International Semantic Web Conference (Posters & Demos)}, crossref = {conf/semweb/2008p}, editor = {Christian Bizer and Anupam Joshi}, publisher = {CEUR-WS.org}, series = {CEUR Workshop Proceedings}, volume = 401, year = 2008, url = {http://dblp.uni-trier.de/db/conf/semweb/iswc2008p.html#MinackSZZ08}, biburl = {http://www.bibsonomy.org/bibtex/25ffa7823d50d39a4156269b862aff1d8/nepomuk}, keywords = {L3S Nepomuk WP2 from:mie}, ee = {http://ceur-ws.org/Vol-401/iswc2008pd_submission_40.pdf}} @article{DemartiniN08, title = {Finding Experts on the Semantic Desktop}, author = {Gianluca Demartini and Claudia Niederée}, year = 2008, url = {http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-403/paper2.pdf}, abstract = {Expert retrieval has attracted deep attention because of the huge economical impact it can have on enterprises. The classical dataset on which to perform this task is company intranet (i.e., personal pages, e-mails, documents). We propose a new system for nding experts in the user's desktop content. Looking at private documents and e-mails of the user, the system builds expert pro les for all the people named in the desktop. This allows the search system to focus on the user's topics of interest thus generating satisfactory results on topics well represented on the desktop. We show, with an arti cial test collection, how the desktop content is appropriate for nding experts on the topic the user is interested in.}, biburl = {http://www.bibsonomy.org/bibtex/2b0ddf832fe0f348365b55c2a06d06789/nepomuk}, keywords = {10 2008 from:demartini l3s lang:en wp5}, } @inproceedings{SteDemNie08, title = {Social Recommendations of Content and Metadata}, address = {Linz, Austria}, author = {Rodolfo Stecher and Gianluca Demartini and Claudia Niederée}, booktitle = {10th International Conference Information Integration and Web-based Applications & Services }, year = 2008, month = { November}, abstract = {In this paper we present metadata based recommendation algorithms addressing two scenarios within social desktop communities: a) recommendation of resources from the co-worker's desktop, and b) recommendation of metadata for enriching the own annotation layer. Together with the algorithms we present first evaluation results as well as empirical evaluations showing that metadata based recommendations can be used in such distributed social desktop communities. }, biburl = {http://www.bibsonomy.org/bibtex/2cc713ef72448b44e2a00473bf39d2fc3/nepomuk}, keywords = {11-2008 L3S WP5 from:stecher}, } @inproceedings{1458189, title = {Wildcards for lightweight information integration in virtual desktops}, address = {New York, NY, USA}, author = {Rodolfo Stecher and Claudia Niederée and Wolfgang Nejdl}, booktitle = {CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge management}, pages = {797--806}, publisher = {ACM}, year = 2008, abstract = {We present a flexible information integration approach which addresses the dynamic integration needs in a personal desktop environment where only partial mappings are defined between the sources to be integrated. Our approach is based on query rewriting using substitution rules. In addition to exploiting defined mappings, we employ substitution strategies, which are inspired by the idea of using wildcards in querying and filtering tasks. Starting from a triple based query language as used for querying RDF data, unmapped ontological elements are substituted in a controlled way with variables, leading to a controlled form of query relaxation. In addition, the approach also provides evidences for refining the existing mapping based on the results of executing the relaxed queries. Different strategies for replacing non-matched ontology elements with variables are presented and evaluated over real-world data sets.}, biburl = {http://www.bibsonomy.org/bibtex/254a249ca255a0fe2c67230eb2a484756/nepomuk}, keywords = {10-2008 L3S WP5 from:stecher}, location = {Napa Valley, California, USA}, isbn = {978-1-59593-991-3}, doi = {http://doi.acm.org/10.1145/1458082.1458189}} @article{4746741, title = {Query rewriting for lightweight information integration}, author = {Rodolfo Stecher and Claudia Niederée and Wolfgang Nejdl}, journal = {Digital Information Management, 2008. ICDIM 2008. Third International Conference on}, pages = {375-380}, year = 2008, month = {Nov.}, abstract = {Light-weight information integration has to be able to effectively deal with settings where only partial mappings between the information sources to be integrated are defined. In our query rewriting approach, such partial mappings are used as the basis for defining several strategies to substitute elements in the query, and for introducing wildcards for relaxing the query when mappings are missing. The approach also supports the extension and refinement of the existing mappings based on the achieved query results and optional feedback of the user. This paper presents the proposed rewriting strategies, focusing on strategies exploiting ontological knowledge, and a comparison and evaluation of the strategies for real-world datasets.}, biburl = {http://www.bibsonomy.org/bibtex/2006216392f06233f8888a67b222ae4a7/nepomuk}, keywords = {11-2008 L3S WP5 from:stecher}, issn = {}, doi = {10.1109/ICDIM.2008.4746741}} @inproceedings{moeller2007dogfood, title = {Recipes for Semantic Web Dog Food --- The ESWC2006 and ISWC2006 Metadata Projects}, address = {Busan, South Korea}, author = {Knud M{\"o}ller and Tom Heath and Siegfried Handschuh and John Domingue}, booktitle = {The sixth International Semantic Web Conference (ISWC2007)}, year = 2007, month = {November}, biburl = {http://www.bibsonomy.org/bibtex/290c2b0024bcc426f9d6fd8ba4b37befd/nepomuk}, keywords = {from:dunken69}, } @misc{sauermann2008ecommerce, title = {Talk: The Semantic Desktop - a new hope for Personal Information Management}, author = {Leo Sauermann}, howpublished = {Talk}, year = 2008, url = {http://www.ec.tuwien.ac.at/trends#SemanticDesktop}, month = {12}, description = {Talk on 1.12.2008 at the Trends in eCommerce is a lecture series at the Technical University of Vienna, organized by the E-Commerce Group.}, abstract = {With today's operating systems it is possible to store a file to a folder, but not to a project or a person. Applications do not share concepts of persons or projects. In the Semantic Web effort, the W3C has proposed standards for the management of metadata. This talk is about a merge of Semantic Web and Personal Computers resulting in the Semantic Desktop. Existing data sources are adapted to RDF, enabling integration across applications. Different projects aim at implementing the new paradigm, in the talk the open source frameworks published by the NEPOMUK project are presented.}, biburl = {http://www.bibsonomy.org/bibtex/29dce4d9b7ecdc601453745532b1a0a3d/nepomuk}, keywords = {12 2008 dfki from:leobard lang:en wp2 wp7}, } @article{jaeschke2008discovering, title = {Discovering Shared Conceptualizations in Folksonomies}, address = {New York}, author = {Robert Jäschke and Andreas Hotho and Christoph Schmitz and Bernhard Ganter and Gerd Stumme}, booktitle = {Semantic Web and Web 2.0}, editor = {T. Finin and R. Mizoguchi and S. Staab}, journal = {Web Semantics: Science, Services and Agents on the World Wide Web}, number = 1, pages = {38--53}, publisher = {Elsevier}, volume = 6, year = 2008, url = {http://www.sciencedirect.com/science/article/B758F-4R53WD4-1/2/ae56bd6e7132074272ca2035be13781b}, month = Feb, description = {ScienceDirect - Web Semantics: Science, Services and Agents on the World Wide Web : Discovering shared conceptualizations in folksonomies}, 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.}, biburl = {http://www.bibsonomy.org/bibtex/218e8babe208fae2c0342438617b0ec31/nepomuk}, keywords = {2008 analysis concept folksonomy formal from:jaeschke l3s myown tagging trias wp5}, issn = {1570-8268}, vgwort = {59}, doi = {10.1016/j.websem.2007.11.004}}