| Vol-2974 urn:nbn:de:0074-2974-7 Copyright © 2021 for the individual papers by the papers' authors. Copyright © 2021 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).

# RecTour 2021
Workshop on Recommenders in Tourism 2021

### Proceedings of the Workshop on Recommenders in Tourism
co-located with the 15th ACM Conference on Recommender Systems (RecSys 2021)

### Online, September 26, 2021.

Edited by

### Julia Neidhardt *
Wolfgang Wörndl **
Tsvi Kuflik ***
Markus Zanker ****

* TU Wien, Austria
** TU München, Germany
*** The University of Haifa, Israel
**** Free University of Bozen/Bolzano, Italy

## Table of Contents

- Preface
  Summary: There were 7 papers submitted for peer-review to this workshop. Out of these, 6 papers were accepted for this volume, 5 as regular papers and 1 as position paper.

### Invited Paper

- Presentation of the expedia group RecTour Research Dataset 1-6
  Adam Woznica, Jan Krasnodebski

### Full Papers

- I Know What You Did Next Summer: Challenges in Travel Destinations Recommendation 7-22
  Dmitri Goldenberg, Sarai Mizrachi, Adam Horowitz, Ioannis Kangas, Or Levkovich, Alessandro Mozzato, Maud Schwoerer, Michele Ferretti, Panagiotis Korvesis, Lucas Bernardi
- Predicting Your Next Trip: A Knowledge Graph-Based Multi-task Learning Approach for Travel Destination Recommendation 23-38
  Amine Dadoun, Raphaël Troncy, Michael Defoin-Platel, Gerardo Ayala Solano
- Multistakeholder Recommender Systems in Tourism 39-53
  Gokulakrishnan Balakrishnan, Wolfgang Wörndl
- Addressing Overchoice: Automatically Generating Meaningful Filters from Hotel Reviews 54-68
  István Varga, Yuta Hayashibe
- Hotel2vec: Learning Hotel Embeddings from User Click Sessions with Side Information 69-84
  Ioannis Partalas, Anne Morvan, Ali Sadeghian, Shervin Minaee, Xinxin Li, Brooke Cowan, Daisy Zhe Wang

### Position Paper

- Ski Resorts Recommendation using Deep Neural Networks 85-89
  Yasmine Serdouk, Timothée Couble, Eric Couble, Cédric Marcone

2021-09-30: submitted by Julia Neidhardt, metadata incl. bibliographic data published under Creative Commons CC0
2021-10-08: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073) |valid HTML5|