The core affect map in Figure 1 will be used to identify the emotional state or sentiment label of a given entity (message, topic or user) according to its valence (X-axis) and arousal (Y-axis) values.
given an entity e with valence and arousal values (v e , a e ), we used the Euclidean distance for identifying the closest distance sentiment to e. For instance, an entity e with valence and arousal values (v e , a e ) = (7.26, 3.56) falls within region R2 and its associated sentiment label would be S e = {serene}.