Abstract
The Track on Recommender Systems: Theory, User Interactions and Applications at ACM/SIGAPP Symposium on Applied Computing (ACM SAC) 2018 provides a dedicated forum to researchers in the area of reommender systems (RecSys) and user modeling, as well as other applied computing areas, for discussing the open research problems, solid solutions, latest challenges, novel applications and innovative research approaches in RecSys. The development of RecSys promotes various research topics, such as user interaction and interfaces, algorithm design and evaluations, computational efficiency, and recommendation explanations. As one of applied sciences, the field of recommender systems attracts experts and receives contributions from multidisciplinary areas. This track was hosted in ACM SAC in the year of 2013, 2014 and 2017 previosuly. And this is the 4 th time to have a track on recommender systems associated with the ACM SAC. The submissions and the selected papers from our track deal with a wide variety of recommender system issues including (not limited to) the topics as follows: