Call for Papers: CrowdRec 2014
Second ACM RecSys Workshop on Crowdsourcing and Human Computation for 
Recommender Systems
Submission deadline: 7 August 2014
http://crowdrecworkshop.org

Held in conjunction with ACM Recommender Systems 2014
Silicon Valley, California, USA, 6th-10th October 2014

Human computation is the application of human intelligence to solve 
problems that computers cannot yet solve. Crowdsourcing scales up the 
power of human intelligence, by calling on a large number of human 
contributors, referred to as the Crowd. Recently, many areas of research 
have awakened to the potential of techniques that gather input from 
human contributors. However, the opportunities are particularly 
promising for recommender systems, whose reliance on expressions of 
human preference, e.g., ratings, in huge quantities already qualifies 
them as crowd-driven technology. In focusing heavily on human 
preference, however, today’s recommender systems fall short of the 
benefits of actively integrating the full potential of human 
intelligence. The purpose of the CrowdRec workshop is to provide a forum 
for exchange and discussion on how human intelligence and crowd 
techniques can be used to improve recommender systems.

A wide range of possibilities exists for effectively collecting 
intelligent input from humans and for incentivizing the Crowd to make 
specific contributions. Collection of input can occur in social 
communities, via large online crowdsourcing platforms such as Mechanical 
Turk, or by way of a variety of applications that use principles of 
gamification to engage users. Crowdmembers can directly contribute 
information (such as comments and reviews), can validate information 
(such as tags or descriptions), or can provide feedback on recommender 
system design or performance. At present, however, the Crowd remains 
notoriously difficult to exploit effectively. The challenge arises from 
the complexity of user and crowdmember communities. Such groups 
constitute dynamic systems that are highly sensitive to changes in the 
form and the parameterization of their activities. A thorough 
understanding of how best to present tasks to the Crowd, and to make use 
of intelligent input, will be crucial in recommender systems to benefit 
from crowdsourcing and human computation.

The CrowdRec Workshop encourages contributions focusing on new 
approaches, new concepts, new methodologies and new applications that 
combine human computation/crowdsourcing with conventional recommender 
systems. Topics include, but are not limited to, the following:

Human Contributions beyond the User-Item Matrix
-Applications and interfaces for collecting annotations,
-Games With A Purpose (GWAP) or other annotation-as-by-product designs,
-Effective Learning from crowd-annotated or crowd-augmented datasets,
-Mining social media to support recommendation,
-Conversational recommender systems,
-Wisdom of the Crowd for decisions support.

Designing and Evaluating Recommenders using Crowd Techniques
-Recommender evaluation metrics and studies,
-Crowd-based user studies,
-Human intelligence for personalization support,
-User modeling and profiling,

Methodologies for Human Intelligence in Recommender Systems
-Identifying expertise and managing reputation,
-Engaging crowdmembers and ensuring quality,
-Tools and platforms to support crowd-enhanced Recommender Systems,
-Inherent biases, limitations and trade-offs of crowd-powered approaches,
-Empirical and case studies of crowd-enhanced recommendation,
-Ethical, cultural and policy issues related to crowd recommendation.

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SUBMISSIONS
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CrowdRec 2014 welcomes submissions of full papers, as well as
short papers reporting work-in-progress. Full papers must be no
longer than 6 pages (inclusive of all figures, references, and
appendices). Short papers are 2 pages, and will be presented as
Posters in an interactive setting.

We encourage the submission of position papers discussing the role of 
crowd techniques in RecSys, introducing new ideas, presenting late 
breaking results. In order to support discussion at the workshop, we 
also offer the option of presenting a proposal for a workshop 
presentation in the form of a slide deck.

Detailed instructions for submission will be posted to the workshop 
website.

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PUBLICATIONS
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Each accepted paper requires at least one of the authors to register for 
the workshop.

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IMPORTANT DATES
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Submission due (updated): August 7, 2014
Author notification: August 21, 2014
Camera-ready due: August 30, 2014
Workshop date: During ACM RecSys 6th-10th October 2014 (Exact date to be 
announced)

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ORGANIZING COMMITTEE
--------------------
Paolo Cremonesi, Politecnico di Milano, Italy, [log in to unmask]
Alexandros Karatzoglou, Telefonica Research, Spain, [log in to unmask]
Martha Larson, Delft University of Technology, Netherlands, 
[log in to unmask]

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ADVISORY BOARD
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Thank you to the workshop’s past organizers for providing their support 
as advisors.
Kuan-Ta Chen, Academia Sinica, Taiwan
Irwin King, The Chinese University of Hong Kong

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