HANDLING SPATIAL VAGUENESS IN VIRTUAL AGENT CONTROL

Spyros Vosinakis, Nikos Pelekis, Yannis Theodoridis, Themis Panayiotopoulos

Abstract

Virtual agents are an important element of virtual environments that enhance their believability and autonomy. Nowadays, there are a number of architectures and languages for designing virtual agents and scripting their control process, but the majority of them cannot cope with the vagueness that characterizes a designer’s description of a location or direction using natural language, and, thus, fail to demonstrate complex spatial behavior in dynamic environments. We propose a framework for handling spatial vagueness in virtual agent control, which uses binary fuzzy relations to represent vague location descriptions and a fuzzy rule-based system for the agent control. We present a prototype implementation and a case study, in which the proposed framework is successfully used for a virtual agent’s locomotion in a dynamic environment.

References

  1. Arafa, Y., Mamdani, A., 2003. Scripting embodied agents behaviour with CML: character markup language. In Proc. of International Conference on Intelligent User Interfaces, pp.313-316.
  2. Aylett, R., Luck, M., 2000. Applying artificial intelligence to virtual reality: Intelligent virtual environments. In Applied Artificial Intelligence, 14 (1), pp.3-32.
  3. Benreguieg, et al, 1997. Fuzzy navigation strategy : Application to two distinct autonomous mobile robots. In Robotica, 15, pp. 609-615.
  4. Gapp, K.-P., 1994. Basic meanings of spatial relations: Computation and evaluation in 3d space. In Proc. of AAAI94, Seattle, WA, pp.1393-1398.
  5. Hazarika, S., Cohn, A.G., 2001. A Taxonomy for Spatial Vagueness: An Alternative Egg-Yolk Interpretation. In Proc. of SVUG'01.
  6. Landau, B., Jackendoff, R., 1993. What and where in spatial language and spatial cognition. In Behavioral and Brain Sciences, 16 (2), pp.217-265.
  7. Olivier, P., Tsujii, J.-I., 1994. Quantitative perceptual representation of prepositional semantics. In Artificial Intelligence Review, 8, 147-158.
  8. Vazirgiannis, M., 2000. Uncertainty handling in Spatial Relationships. In Proc. of the 2000 ACM symposium on Applied computing, pp.494-500.
Download


Paper Citation


in Harvard Style

Vosinakis S., Pelekis N., Theodoridis Y. and Panayiotopoulos T. (2007). HANDLING SPATIAL VAGUENESS IN VIRTUAL AGENT CONTROL . In Proceedings of the Second International Conference on Computer Graphics Theory and Applications - Volume 2: GRAPP, ISBN 978-972-8865-72-6, pages 75-78. DOI: 10.5220/0002084900750078


in Bibtex Style

@conference{grapp07,
author={Spyros Vosinakis and Nikos Pelekis and Yannis Theodoridis and Themis Panayiotopoulos},
title={HANDLING SPATIAL VAGUENESS IN VIRTUAL AGENT CONTROL},
booktitle={Proceedings of the Second International Conference on Computer Graphics Theory and Applications - Volume 2: GRAPP,},
year={2007},
pages={75-78},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002084900750078},
isbn={978-972-8865-72-6},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Second International Conference on Computer Graphics Theory and Applications - Volume 2: GRAPP,
TI - HANDLING SPATIAL VAGUENESS IN VIRTUAL AGENT CONTROL
SN - 978-972-8865-72-6
AU - Vosinakis S.
AU - Pelekis N.
AU - Theodoridis Y.
AU - Panayiotopoulos T.
PY - 2007
SP - 75
EP - 78
DO - 10.5220/0002084900750078