The Adaptation of an Individual's Satisfaction to Group Context: the Role of Ties Strength and Conflicts

Recent studies on recommender systems raise attention to the importance of context, intended both as the external environment and even as the user's internal state, such as, for example, the mood in which the users are going to perform the recommended activities. This is a key factor also in the group recommendation domain, where the context is characterized by the presence of other people with whom the activities must be performed. In this case, social influences and relationships between users come into play, and the individual satisfaction that each user will obtain could change in relation to those social characteristics. In this work, we start an experimental analysis on how ties' strength and possible conflicts in a relationship can influence the opinion shift, with the aim to derive a model that can be used to adapt individual utilities to the \"Group Context\" before aggregating them into the group's ones.