(1) Social systems by their definition encourage interaction between users and both online content and other users, thus generating new sources of knowledge for recommender systems. Web 2.0 users explicitly provide personal information and implicitly express preferences through their interactions with others and the system (e.g. commenting, friending, rating, etc.). These various new sources of knowledge can be leveraged to improve recommendation techniques and develop new strategies which focus on social recommendation.
(2) New application areas for recommender systems emerge with the popularity of the Social Web. Recommenders cannot only be used to sort and filter Web 2.0 and social network information, they can also support users in the information sharing process, e.g., by recommending suitable tags during folksonomy development.
(3) Recommender technology can assist Social Web systems through increasing adoption and participation and sustaining membership. Through targeted and timely intervention which stimulates traffic and interaction, recommender technology can play its role in sustaining the success of the Social Web.
(4) The Social Web also presents new challenges for recommender systems, such as the complicated nature of human-to-human interaction which comes into play when recommending people and can require more interactive and richer recommender systems user interfaces.
The technical papers appearing in these proceedings aim to explore and understand challenges and new opportunities for recommender systems in the Social Web and were selected in a formal review process by an international program committee.
Overall, we received 13 paper submissions from 12 different countries, out of which 7 long papers and 1 short paper were selected for presentation and inclusion in the proceedings. The submitted papers addressed a variety of topics related to Social Web recommender systems from the use of microblogging data for personalization over new tag recommendation approaches to social media-based personalization of news.}, address = {New York, NY, USA}, author = {Mobasher, Bamshad and Jannach, Dietmar and Geyer, Werner and Hotho, Andreas}, interhash = {4a591caf39ca41da55a94a37c8c47074}, intrahash = {354947709c23c90b18dae862c46b2761}, isbn = {978-1-4503-1638-5}, location = {Dublin, Ireland}, note = 609126, publisher = {ACM}, title = {RSWeb '12: Proceedings of the 4th ACM RecSys workshop on Recommender systems and the social web}, year = 2012 } @inproceedings{conf/birthday/HothoS11, author = {Hotho, Andreas and Stumme, Gerd}, booktitle = {Foundations for the Web of Information and Services}, crossref = {conf/birthday/2011studer}, editor = {Fensel, Dieter}, ee = {http://dx.doi.org/10.1007/978-3-642-19797-0_8}, interhash = {502dc9bea95f0c581a37cd39cae2ff09}, intrahash = {845a2a6bf9a43be9e85741a6c7d2aa2d}, isbn = {978-3-642-19796-3}, pages = {143-153}, publisher = {Springer}, title = {From Semantic Web Mining to Social and Ubiquitous Mining - A Subjective View on Past, Current, and Future Research.}, url = {http://dblp.uni-trier.de/db/conf/birthday/studer2011.html#HothoS11}, year = 2011 } @article{burke2011recommendation, abstract = {Recommender systems are a means of personalizing the presentation of information to ensure that users see the items most relevant to them. The social web has added new dimensions to the way people interact on the Internet, placing the emphasis on user-generated content. Users in social networks create photos, videos and other artifacts, collaborate with other users, socialize with their friends and share their opinions online. This outpouring of material has brought increased attention to recommender systems, as a means of managing this vast universe of content. At the same time, the diversity and complexity of the data has meant new challenges for researchers in recommendation. This article describes the nature of recommendation research in social web applications and provides some illustrative examples of current research directions and techniques. It is difficult to overstate the impact of the social web. This new breed of social applications is reshaping nearly every human activity from the way people watch movies to how they overthrow governments. Facebook allows its members to maintain friendships whether they live next door or on another continent. With Twitter, users from celebrities to ordinary folks can launch their 140 character messages out to a diverse horde of ‘‘followers.” Flickr and YouTube users upload their personal media to share with the world, while Wikipedia editors collaborate on the world’s largest encyclopedia.}, author = {Burke, Robin and Gemmell, Jonathan and Hotho, Andreas and Jäschke, Robert}, interhash = {3089ca25de28ef0bc80bcdebd375a6f9}, intrahash = {41dbb2c9f71440c9aa402f8966117979}, journal = {AI Magazine}, number = 3, pages = {46--56}, publisher = {Association for the Advancement of Artificial Intelligence}, title = {Recommendation in the Social Web}, url = {http://www.aaai.org/ojs/index.php/aimagazine/article/view/2373}, volume = 32, year = 2011 } @book{noauthororeditor2011privacy, editor = {Trepte, Sabine and Reinecke, Leonard}, interhash = {0c1381abf25ce1766bf35b1d3b72d87b}, intrahash = {6b40774e3fee58c844c9e059e77691df}, isbn = {9783642215209 3642215203}, pages = {--}, publisher = {Springer-Verlag New York Inc}, refid = {731921793}, title = {Privacy Online Perspectives on Privacy and Self-disclosure in the Social Web.}, url = {http://www.worldcat.org/search?qt=worldcat_org_all&q=9783642215209}, year = 2011 } @article{hotho2010publikationsmanagement, abstract = {Kooperative Verschlagwortungs- bzw. Social-Bookmarking-Systeme wie Delicious, Mister Wong oder auch unser eigenes System BibSonomy erfreuen sich immer gr{\"o}{\ss}erer Beliebtheit und bilden einen zentralen Bestandteil des heutigen Web 2.0. In solchen Systemen erstellen Nutzer leichtgewichtige Begriffssysteme, sogenannte Folksonomies, die die Nutzerdaten strukturieren. Die einfache Bedienbarkeit, die Allgegenw{\"a}rtigkeit, die st{\"a}ndige Verf{\"u}gbarkeit, aber auch die M{\"o}glichkeit, Gleichgesinnte spontan in solchen Systemen zu entdecken oder sie schlicht als Informationsquelle zu nutzen, sind Gr{\"u}nde f{\"u}r ihren gegenw{\"a}rtigen Erfolg. Der Artikel f{\"u}hrt den Begriff Social Bookmarking ein und diskutiert zentrale Elemente (wie Browsing und Suche) am Beispiel von BibSonomy anhand typischer Arbeitsabl{\"a}ufe eines Wissenschaftlers. Wir beschreiben die Architektur von BibSonomy sowie Wege der Integration und Vernetzung von BibSonomy mit Content-Management-Systemen und Webauftritten. Der Artikel schlie{\ss}t mit Querbez{\"u}gen zu aktuellen Forschungsfragen im Bereich Social Bookmarking.}, author = {Hotho, Andreas and Benz, Dominik and Eisterlehner, Folke and J{\"a}schke, Robert and Krause, Beate and Schmitz, Christoph and Stumme, Gerd}, file = {dpunkt Product page:http\://hmd.dpunkt.de/271/05.html:URL}, interhash = {4555775b639fe1ec65a302a61ee6532c}, intrahash = {250d83c41fb10b89c73f54bd7040bd6e}, issn = {1436-3011}, journal = {HMD -- Praxis der Wirtschaftsinformatik}, month = {#feb#}, pages = {47-58}, title = {{Publikationsmanagement mit BibSonomy -- ein Social-Bookmarking-System f{\"u}r Wissenschaftler}}, volume = {Heft 271}, year = 2010 } @article{Berendt201095, author = {Berendt, Bettina and Hotho, Andreas and Stumme, Gerd}, doi = {DOI: 10.1016/j.websem.2010.04.008}, interhash = {4969eb2b7bf1fabe60c5f23ab6383d77}, intrahash = {f8d7bc2af5753906dc3897196daac18c}, issn = {1570-8268}, journal = {Web Semantics: Science, Services and Agents on the World Wide Web}, note = {Bridging the Gap--Data Mining and Social Network Analysis for Integrating Semantic Web and Web 2.0; The Future of Knowledge Dissemination: The Elsevier Grand Challenge for the Life Sciences}, number = {2-3}, pages = {95 - 96}, title = {Bridging the Gap--Data Mining and Social Network Analysis for Integrating Semantic Web and Web 2.0}, url = {http://www.sciencedirect.com/science/article/B758F-4YXK4HW-1/2/4cb514565477c54160b5e6eb716c32d7}, volume = 8, year = 2010 } @article{michael2006social, abstract = {Zusammenfassung Ausgehend vom Begriff des Web 2.0 werden die Merkmale und Möglichkeiten sog. Social Software vorgestellt. Der Beitrag erläutert den Begriff und gibt einen Überblick über die unterschiedlichen Arten. Merkmale und Nutzenpotentiale sowie Beispiele werdenvorgestellt.}, author = {Bächle, Michael}, interhash = {9c13392522490174c44b2562d13193f7}, intrahash = {9f3afc8a39415b9a6a58c8c8c570f1d5}, journal = {Informatik-Spektrum}, month = {#apr#}, number = 2, pages = {121--124}, title = {Social Software}, url = {http://dx.doi.org/10.1007/s00287-006-0063-2}, volume = 29, year = 2006 } @book{Berendt2007, abstract = {This book constitutes the refereed proceedings of the Workshop on Web Mining, WebMine 2006, held in Berlin, Germany, September 18th, 2006. Topics included are data mining based on analysis of bloggers and tagging, web mining, XML mining and further techniques of knowledge discovery. The book is especially valuable for those interested in the aspects of the Social Web (Web 2.0) and its inherent dynamic and diversity of user-generated content.}, date = {September 18, 2006 Series:}, editor = {Berendt, B. and Hotho, A. and Mladenic, D. and Semeraro, G.}, interhash = {44843d4fe175e66198b58137dd924f44}, intrahash = {8aa8d9bcbb5a5bb3fc480d1e53b27236}, isbn = {978-3-540-74950-9}, location = {Berlin, Germany}, publisher = {Springer}, series = {LNCS}, title = {From Web to Social Web: Discovering and Deploying User and Content Profiles }, url = {http://www.springer.com/dal/home?SGWID=1-102-22-173759307-0&changeHeader=true&referer=www.springeronline.com&SHORTCUT=www.springer.com/978-3-540-74950-9}, vgwort = {279}, volume = 4736, year = 2007 } @inproceedings{hoser2006semantic, address = {Budva, Montenegro}, author = {Hoser, Bettina and Hotho, Andreas and Jäschke, Robert and Schmitz, Christoph and Stumme, Gerd}, booktitle = {Proceedings of the 3rd European Semantic Web Conference}, interhash = {344ec3b4ee8af1a2c6b86efc14917fa9}, intrahash = {85f032bf2ffe9b1b55f8656c8a0d6d70}, isbn = {3-540-34544-2}, month = {June}, pages = {514-529}, publisher = {Springer}, series = {LNCS}, title = {Semantic Network Analysis of Ontologies}, url = {http://www.kde.cs.uni-kassel.de/hotho/pub/2006/hoser_sna_eswc2005.pdf}, vgwort = {29}, volume = 4011, year = 2006 } @inproceedings{1135839, address = {New York, NY, USA}, author = {Wu, Xian and Zhang, Lei and Yu, Yong}, booktitle = {WWW '06: Proceedings of the 15th international conference on World Wide Web}, doi = {http://doi.acm.org/10.1145/1135777.1135839}, interhash = {478741551c92402f539a90a9caed61b6}, intrahash = {2ff38a7f8e9e3941d0598877fe964eb5}, isbn = {1-59593-323-9}, location = {Edinburgh, Scotland}, pages = {417--426}, publisher = {ACM Press}, title = {Exploring social annotations for the semantic web}, year = 2006 } @article{Ha05, author = {Hammond, Tony and Hannay, Timo and Lund, Ben and Scott, Joanna}, bibsource = {DBLP, http://dblp.uni-trier.de}, interhash = {c7457d9dc07545a061de119d96ca4e47}, intrahash = {89c6c43ad692ccfbe4c09d31926ab8a7}, isbn = {3-540-60161-9}, journal = {D-Lib Magazine}, month = {April}, number = 4, organization = {{N}ature {P}ublishing {G}roup}, title = {{S}ocial {B}ookmarking {T}ools ({I}): {A} {G}eneral {R}eview}, url = {http://www.dlib.org/dlib/april05/hammond/04hammond.html}, volume = 11, year = 2005 } @inproceedings{conf/vldb/GyongyiGP04, author = {Gyöngyi, Zoltán and Garcia-Molina, Hector and Pedersen, Jan}, booktitle = {VLDB}, ee = {http://www.vldb.org/conf/2004/RS15P3.PDF}, interhash = {df645e278ec1d72e4576f95ec7bb94c0}, intrahash = {0d15cc263e9ca534e79c2d6f470f725e}, pages = {576-587}, title = {Combating Web Spam with TrustRank.}, url = {http://dblp.uni-trier.de/db/conf/vldb/vldb2004.html#GyongyiGP04}, year = 2004 }