May I guide you? Context-Aware Embodied Cooperative Systems in - PowerPoint PPT Presentation

Cognitive Interaction Technology – Center of Excellence KogWis 2010 Doctoral Symposium May I guide you? Context-Aware Embodied Cooperative Systems in Virtual Environments Felix Rabe Ipke Wachsmuth ! www.techfak.uni-bielefeld.de/~frabe

Cognitive Interaction Technology – Center of Excellence Introduction • Virtual Human – Max • has a Belief – Desire – Intention (BDI) cognitive architecture • Virtual Environment – Virtual Tübingen • large model, allows controlled experiments • developed at Max Planck Institute for Biological Cybernetics ! www.techfak.uni-bielefeld.de/~frabe

Cognitive Interaction Technology – Center of Excellence Research Motivation and Questions Interest in the improvement of behavior and assistance of virtual humanoid agents by adding awareness and memory of goals and executed actions. How to detect, memorize, and remember events? How to compare episodes of events (remember similar)? How to use this information in interaction? ! www.techfak.uni-bielefeld.de/~frabe

Cognitive Interaction Technology – Center of Excellence Approach • CAVE-Setting: Max + Virtual Tübingen • Extend the BDI cognitive architecture with Event Event Event Event Event Event Memory Time Time Time Time Space Time • based on Zwaan’s Event Indexing Model Space Space Space Protagonist Space Protagonist • Events are the basic elements of Episodes Protagonist Protagonist Causality Protagonist Causality Causality • Scenario: Explore Virtual Tübingen Causality Intentionality Causality Intentionality Intentionality Intentionality • dialogue based information exchange Intentionality • Max recognizes actions, e.g., what is looked at • if interest is shown, use for reference later on ! www.techfak.uni-bielefeld.de/~frabe

Cognitive Interaction Technology – Center of Excellence Relevance and Significance • Event Indexing Model (Zwaan, Langston, Graesser, 1995) • Event Memory leads to Episodic Memory (Tulving, 1972) • is a part of Autobiographic Memory, plays a role in Person Memory • Memory for agents and virtual characters is still a hot topic • Extending Cognitive Architecture with Episodic Memory (Nuxoll, Laird 2007) • Making Them Remember – Emotional Virtual Characters with Memory (Kasap, Moussa, Chaudhuri, Magnenat-Thalmann, 2009) • Comparing Forgetting Algorithms for Artificial Episodic Memory Systems (Nuxoll, Tecuci, Ho, Wang, 2010) ! www.techfak.uni-bielefeld.de/~frabe

Cognitive Interaction Technology – Center of Excellence Expected Results • Functional Event Memory • Better interaction, believable partner • Better experience in Virtual Environments • Better orientation, faster learning of Environment ! www.techfak.uni-bielefeld.de/~frabe

Cognitive Interaction Technology – Center of Excellence References Zwaan, R. A., Langston, M. C., & Graesser, A. C. (1995). The construction of situation models in narrative comprehension: An event-indexing model. Psychological Science, 6 (5), 292–297. Tulving, E. (1983). Elements of Episodic Memory . Number 2 in Oxford Psychology Series. Clarendon Press, Oxford. Baddeley, A., Conway, M. A., and Aggleton, J. P., (Eds.). (2002). Episodic Memory: New directions in research . Oxford University Press, Oxford. Nuxoll, A. M. and Laird, J. E. (2007). Extending cognitive architecture with episodic memory. In R. C. Holte, & A. Howe, (Eds.), Proceedings of the Twenty-Second AAAI Conference on Artificial Intelligence , (pp. 1560–1565), Menlo Park, CA: The AAAI Press. Tecuci, D. G., & Porter, B. W. (2007). A generic memory module for events. In D. C. Wilson, & G. C. J. Sutcliffe, (Eds.), Proceedings to the 20th Florida Artificial Intelligence Research Society Conference (FLAIRS-07) , (pp. 152–157), Menlo Park, CA: The AAAI Press. Kasap, Z., Moussa, M. B., Chaudhuri, P., and Magnenat-Thalmann, N. (2009). Making them remember– emotional virtual characters with memory. IEEE Computer Graphics and Applications , 29(2):20–29. Nuxoll, A., Tecuci, D., Ho, W. C. and Wang, N. (2010) Comparing Forgetting Algorithms for Artificial Episodic Memory Systems, Remembering Who We Are - Human Memory for Artificial Agent , AISB 2010 ! www.techfak.uni-bielefeld.de/~frabe