In: Mirjam Augstein; Eelco Herder; Wolfgang Wörndl; Enes Yigitbas (Hrsg.). Proceedings of the 23rd International Workshop on Personalization and Recommendation on the Web and Beyond. International Workshop on Personalization and Recommendation on the Web and Beyond (ABIS-2019), 23rd, located at ACM Hypertext, September 17, Hof, Germany, Pages 19-21, ISBN 978-1-4503-6896-4, ACM, New York, 9/2019.