An Emotion Cognitive Appraisal Model for Virtual Characters

Virtual characters are widely used in e-education,cartoon games and e-commerce.However,the current emotion design for virtual characters is still in a handwork stage and needs a large amount of manpower.The behaviors of most virtual characters are simple and unbelievable.Based on psychology theory and ortony,clore,collins (OCC) model,the architecture of a virtual character is presented and a formalization of a virtual character's motivation is proposed.A virtual character's emotion state is driven by a set of fuzzy productive rules for emotion decision.Emotion intensities are calculated by a fuzzy inference system.The experimental result shows that the emotion model enhances the efficacy of friend interfaces for education software,and makes a virtual character behave more humanlike.