“…Depending on application, the focus could be on different states of the user, such as user engagement in conversation (e.g., with a dialog agent [1]), user intention (e.g., to buy a certain product, or chose a specific migration route [2]), user attitude (e.g., toward a specific object, or the agent itself [3]), or user emotions (e.g., to choose different conversation strategy if the user is sad or happy, etc. [4]). In many of those tasks techniques for Affect Analysis have proved to be effective.…”