| Vol-2715 urn:nbn:de:0074-2715-7 Copyright © 2020 for the individual papers by the papers' authors. Copyright © 2020 for the volume as a collection by its editors. This volume and its papers are published under the Creative Commons License Attribution 4.0 International (CC BY 4.0).

# ORSUM 2020
Online Recommender Systems and User Modeling 2020

### Proceedings of the 3rd Workshop on Online Recommender Systems and User Modeling
co-located with the 14th ACM Conference on Recommender Systems (RecSys 2020)

### Virtual Event, September 25, 2020.

Edited by

### João Vinagre (1,2)
Alípio Mário Jorge (1,2)
Marie Al-Ghossein (3)
Albert Bifet (3)

(1) INESC TEC, LIAAD - Laboratory of Artificial Intelligence and Dicision Support, Porto, Portugal
(2) University of Porto, Faculty of Sciences - Department of Computer Science, Porto, Portugal
(3) Télécom-ParisTech, Laboratoire Traitement et Communication de l’Information (LTCI), Paris, France

## Table of Contents

### Keynote

- Three Challenges in Building Industrial-Scale Recommender Systems
  Sebastian Schelter

### Long papers

- User Modeling and Churn Prediction in Over-the-top Media Services
  Vineeth Rakesh, Ajith Pudiyavitil, Jaideep Chandrashekar
- Deploying a Cost-Effective and Production-Ready Deep News Recommender System in the Media Crisis Context
  Jean-Philippe Corbeil, Florent Daudens
- Incremental Graph of Sequential Interactions for Online Recommendation with Implicit Feedback
  Murilo F. L. Schmitt, Eduardo J. Spinosa
- Debiasing Few-Shot Recommendation in Mobile Games
  Lele Cao, Sahar Asadi, Matteo Biasielli, Michael Sjöberg

### Short papers

- CPR: Collaborative Pairwise Ranking for Online List Recommendations
  Saurabh Gupta, Bharathan Balaji, Runfei Luo
- HeroGRAPH: A Heterogeneous Graph Framework for Multi-Target Cross-Domain Recommendation
  Qiang Cui, Tao Wei, Yafeng Zhang, Qing Zhang
- Recommending Accommodation Filters with Online Learning
  Lucas Bernardi, Pablo Estevez, Matias Eidis, Eqbal Osama
- Combining Models for Better User Satisfaction in Video Recommendation
  Josef Florian, Jakub Drdák, Radek Tomšů, Karel Koupil, Václav Blahut, Jaroslav Kuchař, Michal Řehoř

2020-10-16: submitted by João Vinagre, metadata incl. bibliographic data published under Creative Commons CC0
2020-10-28: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073) |valid HTML5|