Workshop on Context-Aware Recommender Systems (CARS-2009)
New York, NY, USA - October 25, 2009
In conjunction with the 3rd ACM Conference on Recommender Systems

Workshop Program | Call for Papers | Important Dates | Workshop Chairs | Program Committee


08:30 Breakfast
08:45-09:00 Workshop introduction and welcoming remarks (Gedas Adomavicius and Francesco Ricci)
09:00-10:15 Full papers: Session I (25 min. for each paper: 15 min. presentation + 10 min. discussion)
  Iván Cantador and Pablo Castells. "Semantic Contextualisation in a News Recommender System". [PDF]
  Linas Baltrunas and Francesco Ricci. "Context-Dependent Items Generation in Collaborative Filtering". [PDF]
  Marcos A. Domingues, Alípio Mário Jorge and Carlos Soares. "Using Contextual Information as Virtual Items on Top-N Recommender Systems". [PDF]
10:15-10:30 Brief introductions of short papers (2-3 min. each)
  Luz M. Quiroga. "Using personal ontologies as a context based user modeling tool for bridging Information Filtering (IF) and Personal Information Management (PIM) research". [PDF]
  Carlos Castro-Herrera. "Context Aware Recommender Systems for Requirements Engineering Tasks". [PDF]
  Mozhgan Tavakolifard. "Context Sensitive Trust Management". [PDF]
10:30-11:00 Coffee break
11:00-12:40 Full papers: Session II (25 min. for each paper: 15 min. presentation + 10 min. discussion)
  Sabrina Lombardi, Sarabjot Anand and Michele Gorgoglione. "Context and Customer Behavior in Recommendation". [PDF]
  Berardina De Carolis, Irene Mazzotta, Nicole Novielli and Vincenzo Silvestri. "Using Common Sense in Providing Personalized Recommendations in the Tourism Domain". [PDF]
  Linas Baltrunas and Xavier Amatriain. "Towards Time-Dependant Recommendation based on Implicit Feedback". [PDF]
  Tim Hussein, Timm Linder, Werner Gaulke and Jürgen Ziegler. "Context-aware recommendations on rails". [PDF]
12:40-13:00 Workshop summary and concluding remarks (Gedas Adomavicius and Francesco Ricci)


The importance of contextual information has been recognized by researchers and practitioners in many disciplines, including e-commerce personalization, information retrieval, ubiquitous and mobile computing, data mining, marketing, and management. While a substantial amount of research has already been performed in the area of recommender systems, the vast majority of existing approaches focuses on recommending the most relevant items to users and does not take into account any additional contextual information, such as time, location, weather, or the company of other people. Therefore, this workshop aims to bring together researchers with wide-ranging backgrounds to identify important research questions, to exchange ideas from different research disciplines, and, more generally, to facilitate discussion and innovation in the area of context-aware recommender systems (CARS).

In particular, topics of interest for this workshop include (but are not limited to):

In case the main topic of the paper is a challenging dataset for context-aware recommender systems, the author(s) should describe the data model and the main features of this dataset, and make the dataset available for the research community.

Paper submission. The length of submissions is 5 pages in the standard ACM SIG proceedings format. Microsoft Word and LaTeX templates for papers in ACM SIG format are provided here. All submissions must be in English and the files should be in PDF format. Paper submissions and reviews will be handled electronically; each paper will be evaluated by the workshop program committee based on originality, significance, technical soundness, and clarity. All papers must be submitted through the CARS-2009 page on the EasyChair conference management site at

Accepted papers. The accepted papers will be made available on the workshop website, and their authors will present their work in front of the workshop audience. The workshop will not request the copyright transfer from the authors; therefore, after receiving feedback at the workshop, the authors will be able to submit the improved versions of their papers to conferences and journals (the workshop organizers are currently exploring the possibilities to organize a special issue on this topic in some research journal).

Note about workshop participation. According to RecSys-2009 procedures, only accepted workshop participants can register to attend the workshops. Those, who do not have a paper at the CARS-2009 workshop but would still like to attend it, are encouraged to email a statement of interest (no more than 1 page) to the workshop chairs by August 10. The requests to participate will be honored based on the space available.


Deadline for paper submission: July 20, 2009 July 28, 2009 (extended)
Notification of acceptance: August 10, 2009 August 15, 2009 (extended)
Final versions due: September 20, 2009


Gediminas Adomavicius (gedas [at] umn [dot] edu), University of Minnesota, USA
Francesco Ricci (fricci [at] unibz [dot] it), Free University of Bozen-Bolzano, Italy


Xavier Amatriain, Telefonica Research, Spain
Hideki Asoh, Intelligent Systems Research Institute, Japan
Linas Baltrunas, Free University of Bozen-Bolzano, Italy
Shlomo Berkovsky, CSIRO, Australia
Doreen Cheng, Samsung R&D Center, San Jose, USA
Michele Gorgoglione, Politecnico of Bari, Italy
Dominikus Heckmann, DFKI, Saarbrücken, Germany
Cosimo Palmisano, Fiat, Italy
Kurt Partridge, Palo Alto Research Center, Palo Alto, USA
Barry Smyth, UCD, Dublin, Ireland

Last modified: September 28, 2009