(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 } @proceedings{berendt2004web, address = {Heidelberg}, editor = {Berendt, Bettina and Hotho, Andreas and Mladenic, Dunja and van Someren, Maarten and Spiliopoulou, Myra and Stumme, Gerd}, interhash = {d7c78aa71fa7487dacfd9172467f1912}, intrahash = {be8b91e0c05dde74a4af7123b949c6ac}, isbn = {3-540-23258-3}, note = {http://km.aifb.uni-karlsruhe.de/ws/ewmf03/}, publisher = {Springer}, series = {LNAI}, title = {Web Mining: From Web to Semantic Web, First European Web Mining Forum, EMWF 2003, Cavtat-Dubrovnik, Croatia, September 22, 2003, Revised Selected and Invited Papers}, url = {http://springerlink.metapress.com/content/unvvag26dttf/}, volume = 3209, year = 2004 } @inproceedings{berendt2004roadmap, abstract = {The purpose of Web mining is to develop methods and systems for discovering models of objects and processes on the World Wide Web and for web-based systems that show adaptive performance. Web Mining integrates three parent areas: Data Mining (we use this term here also for the closely related areas of Machine Learning and Knowledge Discovery), Internet technology and World Wide Web, and for the more recent Semantic Web. The World Wide Web has made an enormous amount of information electronically accessible. The use of email, news and markup languages like HTML allow users to publish and read documents at a world-wide scale and to communicate via chat connections, including information in the form of images and voice records. The HTTP protocol that enables access to documents over the network via Web browsers created an immense improvement in communication and access to information. For some years these possibilities were used mostly in the scientific world but recent years have seen an immense growth in popularity, supported by the wide availability of computers and broadband communication. The use of the internet for other tasks than finding information and direct communication is increasing, as can be seen from the interest in ldquoe-activitiesrdquo such as e-commerce, e-learning, e-government, e-science.}, address = {Heidelberg}, author = {Berendt, Bettina and Hotho, Andreas and Mladenic, Dunja and van Someren, Maarten and Spiliopoulou, Myra and Stumme, Gerd}, bibsource = {DBLP, http://dblp.uni-trier.de}, booktitle = {Web Mining: From Web to Semantic Web}, editor = {Berendt, Bettina and Hotho, Andreas and Mladenic, Dunja and van Someren, Maarten and Spiliopoulou, Myra and Stumme, Gerd}, ee = {http://springerlink.metapress.com/openurl.asp?genre=article{\&}issn=0302-9743{\&}volume=3209{\&}spage=1}, interhash = {a27cc056d337718c1e10a3f9e3048143}, intrahash = {158a99f0088fcefa45b1eb7f96aa5673}, pages = {1-22}, publisher = {Springer}, title = {A Roadmap for Web Mining: From Web to Semantic Web.}, url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2004/berendt2004roadmap.pdf}, volume = 3209, year = 2004 } @proceedings{berendt05european, editor = {Berendt, Bettina and Hotho, Andreas and Mladenic, Dunja and Semerano, Giovanni and Spiliopoulou, Myra and Stumme, Gerd and van Someren, Maarten}, interhash = {6dfd547a42a7bd5ccacce75ea8875704}, intrahash = {f306e43da22adede0286917d5d83eb3b}, title = {Proc. of the European Web Mining Forum 2005}, url = {http://www.kde.cs.uni-kassel.de/ws/ewmf05}, year = 2005 } @proceedings{maedche02information, address = {Aachen}, bibsource = {DBLP, http://dblp.uni-trier.de}, editor = {Maedche, Alexander and Sattler, Kai-Uwe and Stumme, Gerd}, ee = {http://doi.acm.org/10.1145/1013369}, interhash = {8ec5e42e0173c7130e5f2d4c70ac1ac2}, intrahash = {2537bcf40084c8492e0ab397ba6947fe}, journal = {CEUR-WS}, series = {CEUR Workshop Proceedings}, title = {Information Integration and Mining in Databases and on the Web. Proceedings of the 2nd International Workshop on Databases, Documents, and Information Fusion (DBFusion 2002)}, url = {http://ftp.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-124/}, volume = 124, year = 2004 } @proceedings{berendt2004web, address = {Heidelberg}, editor = {Berendt, Bettina and Hotho, Andreas and Mladenic, Dunja and van Someren, Maarten and Spiliopoulou, Myra and Stumme, Gerd}, interhash = {d7c78aa71fa7487dacfd9172467f1912}, intrahash = {be8b91e0c05dde74a4af7123b949c6ac}, isbn = {3-540-23258-3}, note = {http://km.aifb.uni-karlsruhe.de/ws/ewmf03/}, publisher = {Springer}, series = {LNAI}, title = {Web Mining: From Web to Semantic Web, First European Web Mining Forum, EMWF 2003, Cavtat-Dubrovnik, Croatia, September 22, 2003, Revised Selected and Invited Papers}, url = {http://springerlink.metapress.com/content/unvvag26dttf/}, volume = 3209, year = 2004 } @inproceedings{berendt2004roadmap, abstract = {The purpose of Web mining is to develop methods and systems for discovering models of objects and processes on the World Wide Web and for web-based systems that show adaptive performance. Web Mining integrates three parent areas: Data Mining (we use this term here also for the closely related areas of Machine Learning and Knowledge Discovery), Internet technology and World Wide Web, and for the more recent Semantic Web. The World Wide Web has made an enormous amount of information electronically accessible. The use of email, news and markup languages like HTML allow users to publish and read documents at a world-wide scale and to communicate via chat connections, including information in the form of images and voice records. The HTTP protocol that enables access to documents over the network via Web browsers created an immense improvement in communication and access to information. For some years these possibilities were used mostly in the scientific world but recent years have seen an immense growth in popularity, supported by the wide availability of computers and broadband communication. The use of the internet for other tasks than finding information and direct communication is increasing, as can be seen from the interest in ldquoe-activitiesrdquo such as e-commerce, e-learning, e-government, e-science.}, address = {Heidelberg}, author = {Berendt, Bettina and Hotho, Andreas and Mladenic, Dunja and van Someren, Maarten and Spiliopoulou, Myra and Stumme, Gerd}, bibsource = {DBLP, http://dblp.uni-trier.de}, booktitle = {Web Mining: From Web to Semantic Web}, crossref = {DBLP:conf/ewmf/2003}, editor = {Berendt, Bettina and Hotho, Andreas and Mladenic, Dunja and van Someren, Maarten and Spiliopoulou, Myra and Stumme, Gerd}, ee = {http://springerlink.metapress.com/openurl.asp?genre=article{\&}issn=0302-9743{\&}volume=3209{\&}spage=1}, interhash = {a27cc056d337718c1e10a3f9e3048143}, intrahash = {158a99f0088fcefa45b1eb7f96aa5673}, pages = {1-22}, publisher = {Springer}, title = {A Roadmap for Web Mining: From Web to Semantic Web.}, url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2004/berendt2004roadmap.pdf}, volume = 3209, year = 2004 } @proceedings{berendt02semantic, address = {Helsinki, Finland}, comment = {alpha}, editor = {Berendt, B. and Hotho, A. and Stumme, G.}, interhash = {d57b987c3937ff9d7ee64152cec01efa}, intrahash = {b4d1e0ba321cc53504b66fc58ff18446}, month = {August 19,}, title = {Semantic Web Mining. Proc. of the Semantic Web Mining Workshop of the 13th Europ. Conf. on Machine Learning (ECML'02) / 6th Europ. Conf. on Principles and Practice of Knowledge Discovery in Databases (PKDD'02)}, url = {http://km.aifb.uni-karlsruhe.de/ws/semwebmine2002/online_html}, year = 2002 } @proceedings{berendt05european, editor = {Berendt, Bettina and Hotho, Andreas and Mladenic, Dunja and Semerano, Giovanni and Spiliopoulou, Myra and Stumme, Gerd and van Someren, Maarten}, interhash = {6dfd547a42a7bd5ccacce75ea8875704}, intrahash = {f306e43da22adede0286917d5d83eb3b}, title = {Proc. of the European Web Mining Forum 2005}, url = {http://www.kde.cs.uni-kassel.de/ws/ewmf05}, year = 2005 } @proceedings{stumme01semantic, address = {Freiburg}, editor = {Stumme, G. and Hotho, A. and Berendt, B.}, interhash = {8e0ea487e66cca158e69263d18d856f8}, intrahash = {ee4f8a6316e6454df268067b4e47f818}, month = {September 3rd,}, title = {Semantic Web Mining. Workshop Proceedings.}, url = {http://semwebmine2001.aifb.uni-karlsruhe.de/online.html}, year = 2001 } @proceedings{maedche02information, address = {Aachen}, bibsource = {DBLP, http://dblp.uni-trier.de}, editor = {Maedche, Alexander and Sattler, Kai-Uwe and Stumme, Gerd}, ee = {http://doi.acm.org/10.1145/1013369}, interhash = {8ec5e42e0173c7130e5f2d4c70ac1ac2}, intrahash = {2537bcf40084c8492e0ab397ba6947fe}, journal = {CEUR-WS}, series = {CEUR Workshop Proceedings}, title = {Information Integration and Mining in Databases and on the Web. Proceedings of the 2nd International Workshop on Databases, Documents, and Information Fusion (DBFusion 2002)}, url = {http://ftp.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-124/}, volume = 124, year = 2004 } @book{berendt2008challenge, editor = {Berendt, Bettina and Glance, Natalie and Hotho, Andreas}, interhash = {ab9a3d6f27b2bc93cb8137a0f7988271}, intrahash = {50f6cd75018d7ee98f49c5ab4ef0faaf}, publisher = {Workshop at 18th Europ. Conf. on Machine Learning (ECML'08) / 11th Europ. Conf. on Principles and Practice of Knowledge Discovery in Databases (PKDD'08)}, title = {Wikis, Blogs, Bookmarking Tools - Mining the Web 2.0 Workshop}, url = {http://www.kde.cs.uni-kassel.de/ws/wbbtmine2008/pdf/all_wbbtmine2008.pdf}, year = 2008 } @proceedings{msw2004, editor = {Hotho, Andreas and Sure, York and Getoor, Lise}, interhash = {0e2afdbc572d2f6c19c60559919931c1}, intrahash = {0fbd582960b0f6917d82bd1825c3d167}, month = AUG, note = {located at the 10th International ACM SIGKDD Conference on Knowledge Discovery and Data Mining KDD 2004, 22nd August 2004, Seattle, WA, USA}, title = {International Workshop on Mining for and from the Semantic Web (MSW2004)}, url = {http://www.kde.cs.uni-kassel.de/hotho/pub/2004/msw2004_proceedings.pdf}, year = 2004 } @proceedings{berendt2006webmining, editor = {Berendt, B. and Hotho, A. and Mladenic, D. and Semeraro, G.}, interhash = {5e4e5a7285303d11a7f967495fe97059}, intrahash = {ecab780995c630270857b610c7c54e67}, title = {Workshop on Web Mining 2006 (WebMine)}, url = {http://www.kde.cs.uni-kassel.de/ws/webmine2006/pdf/WebMine2006.pdf}, year = 2006 } @proceedings{DBLP:conf/kdd/1999web, bibsource = {DBLP, http://dblp.uni-trier.de}, booktitle = {WEBKDD}, editor = {Masand, Brij M. and Spiliopoulou, Myra}, interhash = {29a69416c66bd604c4599009915dc0b0}, intrahash = {18a9697e8ca04f637487e79b6be9cc83}, isbn = {3-540-67818-2}, publisher = {Springer}, series = {Lecture Notes in Computer Science}, title = {Web Usage Analysis and User Profiling, International WEBKDD'99 Workshop, San Diego, California, USA, August 15, 1999, Revised Papers}, volume = 1836, year = 2000 } @proceedings{stumme01semantic, address = {Freiburg}, comment = {alpha}, editor = {Stumme, G. and Hotho, A. and Berendt, B.}, interhash = {ba288488b822fd20d4d7d947f8036360}, intrahash = {f6d06d221aab066b6cae38b595d35ffc}, month = {September 3rd,}, title = {Semantic Web Mining}, url = {http://semwebmine2001.aifb.uni-karlsruhe.de/online.html}, year = 2001 } @article{DBLP:journals/sigkdd/HothoSG04, author = {Hotho, Andreas and Sure, York and Getoor, Lise}, bibsource = {DBLP, http://dblp.uni-trier.de}, ee = {http://doi.acm.org/10.1145/1046482}, interhash = {02a216da151c9bd84ec4c131e1a43f89}, intrahash = {1aae46b03f32f0d69caa735abe81825e}, journal = {SIGKDD Explorations}, number = 2, pages = {142-143}, title = {A workshop report: mining for and from the Semantic Web at KDD 2004.}, volume = 6, year = 2004 }