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Introducing the Cast for Social Computing: Life-Like Characters

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Life-Like Characters

Part of the book series: Cognitive Technologies ((COGTECH))

Summary

Life-like characters are one of the most exciting technologies for human—computer interface applications. They convincingly take the roles of virtual presenters, synthetic actors and sales personas, teammates and tutors. A common characteristic underlying their believability or life-likeness as conversational partners is computational models that provide them with affective functions such as synthetic emotions and personalities, and implement human interactive behavior or presentation skills. In social computing, a paradigm that aims to support the tendency of humans to interact with computers as social actors, life-like characters are key. They may embody the interface between humans and computers, and thus improve the otherwise poor communicative capabilities of computational devices.

The success of life-like character applications today relies relies on the careful crafting of their designers, mostly programmers. The wide dissemination of life-like character technology in interactive systems, however, will greatly depend on the availability of tools that facilitate scripting of intelligent life-like behavior. The core tasks include the synchronization of synthetic speech and gestures, the expression of emotion and personality by means of body movement and facial display, the coordination of the embodied conversational behavior of multiple characters possibly including the user, and the design of artificial minds for synthetic characters.

In this chapter we will first describe what life-like characters are, and how they differ from related synthetic entities. We will then explain how life-like character technologies may change and improve the interaction between humans and computers. Next, we report on some of the most promising character scripting and representation languages as well as authoring tools currently available. After that, the most successful life-like character systems are briefly introduced, demonstrating the wide range of applications where embodied agents are at work. Some final remarks on this highly active research field conclude this introductory chapter.

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References

  1. Allbeck, J., Badler, N.: Representing and parameterizing agent behaviors. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  2. André, E., Rist, T., van Mulken, S., Kiesen, M., Baldes, S.: The automated design of believable dialogue for animated presentation teams. In: Embodied Conversational Agents, ed Cassell, J., Sullivan, J., Prevost, S., Churchill, E. ( The MIT Press, Cambridge, MA 2000 ) pp 220–255

    Google Scholar 

  3. Arafa, Y., Kamyab, K., Mamdani, E.: Toward a unified scripting language. Lessons learned from developing CML and AML. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  4. Badler, N.I., Bindiganavale, R., Allbeck, J., Schuler, W., Zhao, L., Palmer, M.: Parameterized action representation for virtual human agents. In: Embodied Conversational Agents, ed Cassell, J., Sullivan, J., Prevost, S., Churchill, E. ( The MIT Press, Cambridge, MA 2000 ) pp 256–284

    Google Scholar 

  5. Bates, J.: Virtual reality, art, and entertainment. PRESENCE: Teleoperators and Virtual Environments 1 (1): 133–138 (1992)

    Google Scholar 

  6. Bates, J.: The role of emotion in believable agents. Communications of the ACM 37 (7): 122–125 (1994)

    Article  Google Scholar 

  7. Bickmore, T.: Relational Agents: Effecting Change through Human-Computer Relationships. PhD thesis (Massachusetts Institute of Technology 2003 )

    Google Scholar 

  8. Blumberg, B.M.: Old Tricks, New Dogs: Ethology and Interactive Creatures. PhD thesis (Massachusetts Institute of Technology 1996 )

    Google Scholar 

  9. Breazeal-Ferrell, C., Velâsquez, J.: Toward teaching a robot “infant” using emotive communication acts. In: Proceedings of Workshop on Socially Situated Intelligence, in conjunction with SAB-98 (1998)

    Google Scholar 

  10. Burke, R.: Great expectations: Prediction in entertainment applications. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  11. Cassell, J.: More than just another pretty face: Embodied conversational interface agents. Communications of the ACM 43 (4): 70–78 (2000)

    Article  Google Scholar 

  12. Cassell, J.: Embodied conversational agents: Representation and intelligence in user interface. AI Magazine 22 (3): 67–83 (2001)

    Google Scholar 

  13. Cassell, J., Bickmore, T., Campbell, L., Vilhjâlmsson, H., Yan, H.: Human conversation as a system framework: Designing embodied conversational agents. In: Embodied Conversational Agents, ed Cassell, J., Sullivan, J., Prevost, S., Churchill, E. ( The MIT Press, Cambridge, MA 2000 ) pp 29–63

    Google Scholar 

  14. Cassell, J., Vilhjâlmsson, H.: Fully embodied conversational avatars: Making communicative behaviors autonomous. Autonomous Agents and Multi-Agent Systems 2: 45–64 (1999)

    Article  Google Scholar 

  15. Cassell, J., Vilhjâlmsson, H., Bickmore, T.: BEAT: the Behavior Expression Animation Toolkit. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  16. Conati, C.: Probabilistic assessment of user’s emotions in educational games. Applied Artificial Intelligence 16: 555–575 (2002)

    Article  Google Scholar 

  17. Dautenhahn, K.: Embodiment and interaction in socially intelligent life-like agents. In: Computation for Metaphors, Analogy and Agent, ed Nehaniv, C.L. (LNAI 1562, Springer Berlin New York 1999 ) pp 102–142

    Google Scholar 

  18. Helmut Prendinger and Mitsuru Ishizuka

    Google Scholar 

  19. De Carolis, B., Pelauchaud, C.: APML, a markup language for believable behavior generation. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  20. de Rosis, F., Carolis, B. De, Carofiglio, V.: Shallow and inner forms of emotional intelligence in advisory dialog simulation. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  21. de Rosis, F., Carolis, B. De, Pizzulito, S.: Software documentation with animated agents. In: Proceedings 5th ERCIM Workshop on User Interfaces For All (1999)

    Google Scholar 

  22. Doyle, P.: When is a communicative agent a good idea? In: Proceedings Agents-99 Workshop on Communicative Agents (1999)

    Google Scholar 

  23. Elliott, C., Brzezinski, J.: Autonomous agents as synthetic characters. AI Magazine 19 (2): 13–30 (1998)

    Google Scholar 

  24. Extempo Systems Inc. http://www.extempo.com

  25. Gratch, J., Rickel, J., André, E., Cassell, J., Petajan, E., Badler, N.: Creating interactive virtual humans: Some assembly required. IEEE Intelligent Systems, July/August, 54–63 (2002)

    Google Scholar 

  26. Harel, D.: Dynamic logic. In: Handbook of Philosophical Logic. II: Extensions of Classical Logic, ed Gabbay, D., Guenthner, F. ( Reidel, Boston, MA 1984 ) pp 497–604

    Chapter  Google Scholar 

  27. Hayes-Roth, B.: Adaptive learning guides. In: Proceedings of the TASTED Conference on Computers and Advanced Technology in Education (2001)

    Google Scholar 

  28. Hayes-Roth, B.: What makes characters seem life-like? In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  29. Hayes-Roth, B., Doyle, P.: Animate characters. Autonomous Agents and Multi-Agent Systems 1 (2): 195–230 (1998)

    Article  Google Scholar 

  30. Huang, Z., Eliéns, A., Visser, C.: STEP: a scripting language for embodied agents. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  31. Johnson, W.L., Rickel, J., Lester, J.C.: Animated pedagogical agents: Face-to-face interaction in interactive learning environments. International Journal of Artificial Intelligence in Education 11: 47–78 (2000)

    Google Scholar 

  32. Kawamoto, S., Shimodaira, H., Nitta, T., Nishimoto, T., Nakamura, S., Itou, K., Morishima, S., Yotsukura, T., Kai, A., Lee, A., Yamashita, Y., Kobayashi, T., Tokuda, K., Hirose, K., Minematsu, N., Yamada, A., Den, Y., Utsuro, T., Sagayama, S.: Galatea: Open-source software for developing anthropomorphic spoken dialog agents. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  33. Kitamura, Y.: Web information integration using multiple character agents. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  34. Lester, J.C., Converse, S.A., Kahler, S.E., Barlow, S.T., Stone, B.A., Bhogal, R.S.: The Persona effect: Affective impact of animated pedagogical agents. In: Proceedings of CHI-97 ( ACM Press, New York 1997 ) pp 359–366

    Chapter  Google Scholar 

  35. Lisetti, C., Nasoz, F., LeRouge, C., Ozyer, O., Alvarez, K.: Developing multimodal intelligent affective interfaces for tele-home health care. International Journal of Human-Computer Studies 59(1-2): 245–255 (2003)

    Google Scholar 

  36. Mariott, A., Beard, S.: gUI: Specifying complete user interaction. In: Lifelike Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  37. Mariott, A., Stallo, J.: VHML Uncertainties and problems. A discussion. In: Proceedings AAMAS-02 Workshop on Embodied Conversational Agents—Let’s specify and evaluate theml (2002)

    Google Scholar 

  38. Marsella, S., Gratch, J., Rickel, J.: Expressive behaviors for virtual worlds. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  39. Mateas, M., Stern, A.: A Behavior Language: Joint action and behavioral idioms. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  40. McBreen, H., Shade, P., Jack, M., Wyard, P.: Experimental assessment of the effectiveness of synthetic personae for multi-modal e-retail applications. In: Proceedings.4th International Conference on Autonomous Agents (Agents’2000) ( ACM Press, New York, 2000 ) pp 39–45

    Chapter  Google Scholar 

  41. Microsoft. Developing for Microsoft Agent ( Microsoft Press, Redmond, WA 1998 )

    Google Scholar 

  42. Nishida, T.: Social intelligence design–An overview. In: New Frontiers in Artificial Intelligence. Joint JSAI 2001 Workshop Post-Proceedings (Springer, Berlin New York 2001 ) pp 3–10

    Chapter  Google Scholar 

  43. Paiva, A. (ed): Affective Interactions. Towards a New Generation of Computer Interfaces. ( LNAI 1814, Springer, Berlin New York 2000 )

    Google Scholar 

  44. Paiva, A., Prada, R., Machado, I., Martinho, C., Vala, M., Silva, A.: Playing with agents — Agents in social and dramatic games. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  45. Picard, R.W.: Affective Computing. ( The MIT Press, Cambridge MA 1997 )

    Google Scholar 

  46. Prendinger, H., Descamps, S., Ishizuka, M.: Scripting affective communication with life-like characters in web-based interaction systems. Applied Artificial Intelligence 16 (7–8): 519–553 (2002)

    Article  Google Scholar 

  47. Prendinger, H., Ishizuka, M.: Evolving social relationships with animate characters. In: Proceedings of the AISB-02 Symposium on Animating Expressive Characters for Social Interactions (2002) pp 73–78

    Google Scholar 

  48. Prendinger, H., Mayer, S., Mori, J., Ishizuka, M.: Persona effect revisited: Using bio-signals to measure and reflect the impact of character-based interfaces. Fourth International Working Conference on Intelligent Virtual Agents (IVA03). In press.

    Google Scholar 

  49. Prendinger, H., Saeyor, S., Ishizuka, M.: MPML and SCREAM: Scripting the bodies and minds of life-like characters. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  50. Reeves, B., Nass, C.: The Media Equation. How People Treat Computers, Television and New Media Like Real People and Places (CSLI Publications, Center for the Study of Language and Information Cambridge University Press 1998 )

    Google Scholar 

  51. Rist, T.: Some issues in the design of character scripting and specification languages — A personal view. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  52. Rist, T., André, E., Baldes, S., Gebhard, P., Kiesen, M., Kipp, M., Rist, P., Schmitt, M.: A review of the development of embodied presentation agents and their application fields. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  53. Rousseau, D., Hayes-Roth, B.: A social-psychological model for synthetic actors. In: Proceedings 2nd International Conference on Autonomous Agents (Agents-98) ( ACM Press, New York 1998 ) pp 165–172

    Chapter  Google Scholar 

  54. Sumi, Y., Mase, K.: Interface agents that facilitate knowledge interactions between community members. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  55. Sumi, Y., Mase, K.: Supporting the awareness of shared interests and experiences in communities. Journal of Human-Computer Studies 56 (1): 127–146 (2002)

    Article  Google Scholar 

  56. Takahashi, T., Takeda, H., Katagiri, Y.: Script language for embodied agents as personal conversational media in online communities. In Proceedings AAMAS02 Workshop on Embodied Conversational Agents: Let’s specify and compare theml (2002)

    Google Scholar 

  57. Tanaka, H., Tokunaga, T., Yusuke, S.: Animated agents capable of understanding natural language and performing actions. In: Life-like Characters. Tools, Affective Functions and Applications, ed Prendinger, H., Ishizuka, M. ( Springer 2003 ). This volume.

    Google Scholar 

  58. Thalmann, D., Noser, H., Huang. Z.: Autonomous virtual actors based on virtual sensors. In: Creating Personalities for Synthetic Actors, ed Trappl, R., Petta, P. ( Springer, Berlin New York, 1997 ) pp 25–42

    Chapter  Google Scholar 

  59. Thomas, F., Johnston, O.: Disney Animation: The Illusion of Life ( Abbeville Press, New York 1981 )

    Google Scholar 

  60. Trappl, R., Petta, P.: Creating Personalities for Synthetic Actors (LNAI Stateof-the-Art Survey 1195, Springer, Berlin New York 1997 )

    Google Scholar 

  61. Weiser, M.: The computer for the 21st century. Scientific American, September, 94–100 (1991)

    Google Scholar 

  62. Zoesis Studios. http://www.zoesis.com/corporate/index.html

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Prendinger, H., Ishizuka, M. (2004). Introducing the Cast for Social Computing: Life-Like Characters. In: Prendinger, H., Ishizuka, M. (eds) Life-Like Characters. Cognitive Technologies. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-08373-4_1

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  • DOI: https://doi.org/10.1007/978-3-662-08373-4_1

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-05655-0

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