Journal of the Institute of Electronics Engineers of Korea CI (전자공학회논문지CI)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Logical Simulation of Dynamic Natural Phenomena Based on Event Propagation Graph

사건 전파그래프에 기반한 동적인 자연현상의 논리적 시뮬레이션

  • Park, Jung-Yong (Dept. of Electronic Engineering Kyungpook National University) ;
  • Park, Jong-Hee (Dept. of Electronic Engineering Kyungpook National University)
  • 박정용 (경북대학교 전자공학과) ;
  • 박종희 (경북대학교 전자공학과)
  • Published : 2001.07.25
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Abstract

This paper develops a logical simulation method for by dyversity of situations. Most existing systems, for example, games and infant tutoring systems lead users to virtual environment with unfolding situations, but are not designed to induce the change of the environment itself. In this paper, a logically simulated environment is created by defining situations and single events based on situation hierarchy structure. We elaborate the occurrence of events by classifying the causality. The occurrence or natural phenomena is dictated by physical laws and natural phenomena are expressed as the transition of the event based on event association. Specifically we define the source of the event for natural phenomena and we consider the existence of objects as a primary factor in event occurrence. The advantages of this approach include the reuse of events, that is, different events can be generated in the same flow with fresh conditions. This allows us to implement a more practical and logical environment. A drawback to this method is the difficulty in dividing a situation into events. The proposed method was implemented in the context of the change of season among natural phenomena.

본 논문은 컴퓨터를 통해 가상세계를 구축하기 위한 논리적 시뮬레이션 방법을 개발한다. 기존의 일정한 패턴으로 전개되는 게임, 유아용 교육 시스템은 다수의 사용자를 가상의 공간으로 유도하여 상황을 전개하나 환경자체의 변화를 유발시키는 것에는 미흡하다. 따라서 본 논문에서는 개념적이고 논리적인 상황 변화를 가능하게 하는 가상 환경 시스템을 개발한다. 환경의 논리적인 구현은 시공간적인 상황속에서 시뮬레이션함으로써 이루어진다. 본 논문에서는 상황계층구조를 통해 시뮬레이션 가능한 상황을 정의하고 단일 사건을 정의한다. 그리고 인과관계를 세분화하여 사건 발생을 전개해 나간다. 자연 현상에서 사건은 물리법칙에 기반하여 발생하며, 현상은 사건들간의 연관성을 이용하여 표현한다. 이러한 방법은 초기 사건의 세분화 작업이 어려우나 사건의 재사용의 장점을 가져온다. 그리고 동일 패턴의 사건에서는 새로운 조건을 이용함으로써 보다 현실적이고 논리적인 성황의 구현을 가능하게 한다. 특히 자연현상에서 사건의 원천을 정의하고 객체의 생명 시간에 의한 객체의 존재유무가 사건의 주된 요인으로 취급된다. 제안하는 방법은 자연현상 중 계절의 변화에 적용하여 표현 가능함을 보인다.

Keywords

References

  1. Jane H. Murray, Stuart A. Malone, 'The Structures of Advanced Multimedia Learning Environment: Reconfiguring Space, Time, Story, and Text,' MIT Press, 1992
  2. Richard Angros, Jr. W.Lewis Johnson, Jeff Rickel, 'Agents that Learn to Instruct,' MIT, 1997
  3. Neil C.Rowe, Tomas P.Galvin 'An Authoring System for intelligent procedural-skill Tutor,' IEEE Intelligent System & their application, vol. 13, no. 11, pp, 61-69, may-june 1998 https://doi.org/10.1109/5254.683211
  4. David Franklin, 'Cooperating with people: the Intelligent Classroom', Chicago, 1998
  5. Ravindra Krovi, Arthur C. Graesser, and William E 'Agent Behaviors in Virtual Negotiation Environments,' IEEE Transaction On Systems, Man, and Cybernetics Part C: Application and Reviews, vol. 29, no. 1, February 1999 https://doi.org/10.1109/5326.740666
  6. Y.Matsubara, 'Virtual Learning Environment for Discovery Learning and Its Application on Operator Trainging,' IEICE Transactions on Information & System, V.E80-D, N.2, 1997
  7. Stanley Y.P.Chien, Lucy Q.Xue, and Mathew Palakal 'Task Planning for a Mobile Robot in an Indoor Environment Using Objected Oriented Domain Information,' IEEE Transaction On System, Man, and Cybernetic-Part B: Cybernetics, Vol. 27, No.6, December 1997 https://doi.org/10.1109/3477.650060
  8. Hanqiu Sun 'A Relation-Based Model for Animating Adaptive Behavior in Dynamic Environments,' IEEE Transaction On Systems, and Cybernetics Part A: System and Humans, vol. 27, no. 2, March 1997 https://doi.org/10.1109/3468.554685
  9. Vijay Vasandani, and T.Govindaraj 'Knowledge Organization in Intelligent Tutoring System for Diagnostic Problem Solving in Complex Dynamic Domains,' IEEE Transaction On Systems, Man, and Cybernetics, vol. 25, no. 7, July 1995 https://doi.org/10.1109/21.391288
  10. E.Ohmaye 'Simulation-Based Language Learning : An Architecture and a Multimedia Authoring Tool,' Northwestern Univ, 1992
  11. Peng.Y and Reggia, J.A., 'A Probabilistic Causal Model for Diagnostic Problem Solving Park I : Integrating Symbolic Causal Inference with Numerical probabilistic Inference.' IEEE Trans. on Systems. Man. and Cybernetics. vol. SMC-17, no.2, March/April 1987, pp. 146-162
  12. Luca Console and Pietro Torasso, 'An Approach to the Complilation of Operational Knowledge from Causal Models.' IEEE Trans. on Systems, Man, and Cybernetics, vol. 22, no. 4, July/August 1987, pp. 772-788 https://doi.org/10.1109/21.156589
  13. Bernard P. Zeigler, Tae H. Cho and Jerzy W. Rozenblit, 'A Knowledge-Based Simulation Environment for Hierarchical Flexible Manufacturing.' IEEE Trans. on Systems, Man, and Cybernetics, vol. 26, no. 1, January 1996, pp.81-90 https://doi.org/10.1109/3468.477862