Emotional interaction model for a service robot

This paper presents the emotional interaction model that receives classified inputs from user\´s response and decides what emotional response the robot should generate. Cognitive emotion modeling requires profound understanding about human\´s cognitive processes and ideas on how to implement each constitutional components of the model into the robot. The proposed model is composed of two layers: reactive and deliberative layers. Reactive layer is in charge of immediate emotional response of the robot. It works with pre-defined rules which relate input to its corresponding emotional expressions. This layer enables immediate display of the robot\´s emotional state to the user so that lifelike characteristics of the robot can be achieved. The deliberative layer is in charge of the appraisal-based emotion expression and carries out the function of "action-coloring," which adds flavor to the actions being taken. Emotional interaction scenarios which are considered to be possible with the proposed emotion model are also introduced.