Design of two combined health recommender systems for tailoring messages   in a smoking cessation app
  In this article, we describe the design of two recommender systems (RS) designed to support the smoking cessation process through a mobile application. We plan to use a hybrid RS (content-based, utility-based, and demographic filtering) to tailor health recommendation messages, and a content-based RS to schedule a timely delivery of the message. We also define metrics that we will use to assess their performance, helping people quit smoking when we run the pilot. 
Santiago Hors-Fraile, Francisco J N\'u\~nez Benjumea, Laura Carrasco   Hern\'andez, Francisco Ortega Ruiz, Luis Fernandez-Luque
cs.HC