1.    Mitchell W M. Complexity: the emerging science at the edge of order and chaos. New York, NY, USA: Simon & Schuster, 1992

  2.    Marpaung A H, Lisetti C L. Multilevel emotion modeling for autonomous agents. Proceedings of the Fall Symposium on the Intersection of Cognitive Science and Robotics: From Interfaces to Intelligence (AAAI FSS’04), Oct 22-24, 2004, Washington, DC, USA. Menlo Park, CA, USA: American Association for Artificial Intelligence, 2004

  3.    Zhou W D, Coggins R. Computational models of the amygdala and the orbitofrontal cortex: a hierarchical reinforcement learning system for robotic control. Advances in Artificial Intelligence. Proceedings of the 15th Australian Joint Conference on Artificial Intelligence (AI’02), Dec 2-6, 2002, Canberra, Australia. LNCS 2557. Berlin, Germany: Springer-Verlag, 2002: 419-430

  4.    Ortony A, Clore G L, Collins A. The cognitive structure of emotions. New York, NY, USA: Cambridge University Press, 1988: 68

  5.    Sloman A. Varieties of affect and the CogAff architecture schema. Proceedings of the AISB’01 Symposium on Emotion, Cognition, and Affective Computing, Mar 21-24, 2001, York, UK. Lonton, UK: AISB Press, 2001: 39-48

  6.    Picard R W. Affective computing. Cambridge, MA, USA: MIT Press, 1997

  7.    Arkin R C, Fujita M, Takagi T, et al. Ethological modeling and architecture for an entertainment robot. Proceedings of the 2001 IEEE International Conference on Robotics and Automation (ICRA’01): Vol 1, May 21-26, 2001, Seoul, Korea. Piscataway, NJ, USA: IEEE, 2001: 454-458

  8.    Park G Y, Lee S I, Kwon W Y, et al. Neurocognitive affective system for an emotive robot. Proceedings of the 2006 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS’06), Oct 9-15, 2006, Beijing, China. Piscataway, NJ, USA: IEEE, 2006: 2595-2600

  9.    Zhong D L, Yong X, Cao C G. Research on emotion and action about generation of intelligent story. Information Technology Letter, 2006, 4(5): 16-25 (in Chinese)

10.    Yang H W, Pan Z G, Liu G D. A comprehensive computational model of emotions. Journal of Computer Research and Development, 2008, 45 (4): 579-587 (in Chinese)

11.    Liu Z. A personality based emotion model for intelligent virtual agents. Proceedings of the 4th International Conference on Natural Computation (ICNC’08), Oct 18-20, 2008, Jinan, China. Los Alamitos, CA, USA: IEEE Computer Society, 2008: 13-16

12.    Malfaz M, Salichs M A. Learning behaviour-selection algorithms for autonomous social agents living in a role-playing game. Proceedings of the International Conference on Adaptation in Artificial and Biological Systems (AISB’06), Apr 3-6, 2006, Bristol, UK. 2006

13.    Meng Z L. The psychology of emotion. Beijing, China: Peking University Press, 2005 (in Chinese)