This book constitutes the refereed proceedings of the 23rd International Conference on User
Modeling Adaptation and Personalization UMAP 2015 held in Dublin Ireland in June July
2015. The 25 long and 7 short papers of the research paper track were carefully reviewed and
selected from 112 submissions. The papers reflect the conference theme Contextualizing the
World highlighting the significance and impact of user modeling and adaptive technologies on a
large number of everyday application areas such as: intelligent learning environments
recommender systems e-commerce advertising personalized information retrieval and access
digital humanities e-government cultural heritage and personalized health.
