Paper Abstract Submission Deadline: May 9, 2011 Paper Submission Deadline: May 16, 2011
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We are pleased to invite you once again to participate in the premier annual event on research and
applications of recommendation technologies, the Fifth ACM Conference on Recommender Systems. The
previous conferences have been distinguished by a strong level of interaction between practitioners
and researchers in the sharing of ideas, problems and solutions, and the 2011 conference will continue
in this tradition. The fully-refereed proceedings will be published by the ACM and, like past RecSys
proceedings, are expected to be widely read and cited.

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TOPICS OF INTEREST
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We construe recommender systems broadly, including applications ranging from e-commerce to social 
networking, platforms from web to mobile and beyond, and a wide variety of technologies ranging 
from collaborative filtering to case-based reasoning. Therefore, topics of interest for RecSys 2011
include (but are not limited to):

* Case studies of recommender system implementations
* Computational advertising
* Conversational recommender systems
* Context-aware and multidimensional recommender systems
* Evaluation of recommender systems
* Group recommenders
* Impact of recommenders in practice
* Innovative recommender applications
* Machine learning and recommender systems
* Novel paradigms of recommender systems
* Personalization
* Preference elicitation
* Recommendation algorithms
* Recommendation in social networks
* Recommender system interfaces
* Scalability of recommendation techniques
* Security, privacy, trust, and robustness
* Semantic web technologies for recommender systems
* Theoretical aspects of recommender systems
* User modeling and recommender systems
* User studies

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IMPORTANT DATES
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Deadline for abstracts (mandatory for long/short papers): May 9, 11.59 pm (PST) Paper submission 
deadline: May 16, 11.59 pm (PST) Paper Acceptance Notifications: July 15 Camera-ready copy: August 7

Please see the conference website (http://recsys.acm.org/2011/) for additional important dates for 
submitting workshop papers, tutorial proposals, and doctoral symposium applications.

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PAPER FORMAT & SUBMISSION
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All submissions and reviews will be handled electronically in PDF format. RecSys 2011 submissions 
should be prepared according to the standard ACM SIG proceedings format. For your convenience, we provide paper templates in Microsoft Word and LaTeX on the conference website.
More details on the submission procedure will be available soon at the conference website http://recsys.acm.org/2011/

There are two paper submission categories:

- LONG PAPER submissions should report on substantial contributions of lasting value. The maximum 
length is 8 pages in the standard ACM SIG proceedings format.

- SHORT PAPER submissions typically discuss exciting new work that is not yet mature enough for a 
long paper. Each accepted short paper will be presented in a poster/demo session. The presentation 
may include a system demonstration. The maximum length is 4 pages in the standard ACM SIG proceedings format.

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RECSYS 2011 CHAIRS
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Bamshad Mobasher, General Chair,
DePaul University, USA

Robin Burke, General Chair,
DePaul University, USA

Dietmar Jannach, Program Chair,
TU Dortmund, Germany

Gediminas Adomavicius, Program Chair,
University of Minnesota, USA


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CALL FOR TUTORIAL PROPOSALS
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RecSys 2011 is pleased to invite proposals for 90-minute tutorials to be held as part of the main
conference. Tutorials provide the larger conference community an opportunity to learn about RecSys
concepts and techniques and serve as a venue to share presenters' expertise with the global community
of RecSys researchers and practitioners.
Tutorials are intensive instructional sessions focused on specific topics including, but not limited to, the following:

*	Introduction to Recommender Systems
*	The intersection of RecSys and other domains (e.g., HCI, machine
learning, IR, AI)
*	Specific methodologies for deploying and evaluating RecSys applications
*	Techniques for developing RecSys applications

We actively encourage both researchers and industry practitioners to submit tutorial proposals.

Important Dates

May 10, 2011: Tutorial proposals due
May 24, 2011: Decisions announced
June 7, 2011: Camera-ready tutorial summaries due

Proposal Format

The tutorial proposal should be a one-page PDF submitted by e-mail to ido@il.ibm.com and organized
as follows:
1.	Tutorial Title
2.	Name, email address, and affiliation for tutorial instructor(s).
Each listed instructor should present at the conference.
3.	Detailed bulleted outline of the tutorial (this should take most of
the proposal's space)
4.	Target audience and prerequisite knowledge, if any
5.	Related tutorials or other presentations previously given (if any)

See also: http://recsys.acm.org/2011/

RecSys 2011 Tutorial Chairs

Ido Guy, IBM Research, Haifa
Shlomo Berkovsky, CSIRO, Australia

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--
Zeno Gantner
Machine Learning Lab
University of Hildesheim
Tel. +49 5121 / 883 856
http://www.ismll.uni-hildesheim.de/

MyMediaLite Recommender System Library: http://ismll.de/mymedialite