* We apologize if you receive multiple copies of this CfP *
* For the online version of this Call, visit: https://recsys.acm.org/recsys19/call/workshops *

RecSys 2019 is pleased to invite proposals for workshops to be held in conjunction with the conference. The goal of the workshops is to provide additional venues for discussing novel ideas as well as recent results of research in progress.

In 2019 our goal is to have a balanced workshop program which comprises workshop formats of different types and a combination of newly emerging, currently evolving, and historically understudied topics. Different full-day and half-day workshop formats are possible, for example:

* Workshops with novel interactive workshop formats and a relatively small number of participants. Such workshop formats might for example target at the exploration of a certain topic during the workshop through a moderated discussion or breakout sessions, resulting in a draft paper or report to be completed and published after the workshop. Particular priority will be given to these formats which require the active involvement of the participants.
* Workshops with the traditional workshop format on specialized topics; such workshops typically have their own paper submission and review processes. Proposals for continuations of existing workshop series are welcome, however, please include a brief statement on the necessity for the new edition, including a description of the outcomes of previous years and the expected novelty of this edition.
* We encourage you to contact us by email to [log in to unmask] in advance with workshop ideas; we will work with prospective workshop organizers to help them design successful proposals. In particular for workshop proposals with novel interactive formats we are happy to assist you in further developing and implementing your ideas. Please contact us at least three weeks before the deadline.

We encourage both researchers and industry practitioners to submit proposals.


PROPOSAL FORMAT AND SUBMISSION

The workshop proposal should be a PDF document no more than 4 pages long, submitted by e-mail to [log in to unmask] and organized as follows:

* Workshop title.
* A short description of the workshop including the rationale for the workshop and how and why it fits the audience of RecSys. This description should include also the topic, format, and details about what type of submission is requested from prospective attendees. Please also add an explanation on how the workshop complements, rather than duplicates, the topics of the main conference.
* Name, email address, and affiliation for workshop organizer(s) and a brief description of their experience in organizing such events.
* Requested duration (half day or full day), and expected number of participants.
* Description of workshop activities. Outline how the workshop will be organized and how the time will be spent. In particular, please sketch how you will engage participants to foster more interactivity and engagement during the workshop.
* For more interactive workshop formats, also outline the process of selecting or inviting the participants.
* Description of plans for promoting the workshop and disseminating the results.
* History of prior workshops on this topic (e.g., including the number of submissions and attendees), if any.


EVALUATION CRITERIA

* Ability of the topic to contribute to the continued development of the field of recommender systems.
* Level of complementarity of the topic to the main conference.
* Clear plan for attracting submissions, making the workshop itself productive, and disseminating results.
* Evidence that this plan will be successful.
* Experience of the organizers.


IMPORTANT DATES

* Workshop proposal submission deadline: February 25th, 2019
* Workshop proposal notification: March 11th, 2019
* Camera-ready workshop summary deadline: July 22nd, 2019
* Workshop dates: September 19th and 20th, 2019

Eample deadlines (workshop organizers are free to apply their own deadlines, although we encourage the organizers to follow the suggested deadlines):

* Call for Papers publication: March 25th, 2019
* Paper submission deadline: July 1st, 2019
* Reviewer deadline: July 19th, 2019
* Author notification: July 29th, 2019
* Camera-ready version deadline: August 27th, 2019

Deadlines refer to 23:59 (11:59pm) in the AoE (Anywhere on Earth) time zone.


WORKSHOP CHAIRS
* Christoph Trattner, University of Bergen, Norway
* Sandra Garcia, Schibsted, Spain

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