[ACM Press the 25th Conference - Bratislava, Slovakia (2017.07.09-2017.07.12)] Proceedings of the 25th Conference on User Modeling, Adaptation and Personalization - UMAP '17 - Recommender Systems as Multistakeholder EnvironmentsAbdollahpouri, Himan; Burke, Robin; Mobasher, Bamshad · 2017