wAij is the weight of the Action FAij and represents its importance over other actions. Its value is between 0 and 1. For example, for Facebook, a Comment is considered more important than a Like in the proposal. In particular, in the proposal, the weight of a positive Comment is 0.727, while the weight of a Like is 0.273, according to the values obtained from the data shown in the survey . The system may detect positive, negative and neutral Comments using machine learning algorithms ;