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Labeled @-Calculus: Formalism for Time-Concerned Human Factors

  • Tetsuya Mizutani
  • Shigeru Igarashi
  • Yasuwo Ikeda
  • Masayuki Shio
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4120)

Abstract

In the recent years it has come to be more and more important to analyze and verify systems which control complex external systems, like railways and airlines, whose serious accidents have been caused not only by bugs in software or hardware but also by human errors possibly involved in recognition or decision. This paper deals with an actual traffic accident widely known as “Shigaraki Kougen Railway accident” caused by a fatal decision based upon certain incorrect knowledge, as an example of systems involving human factor. In order to represent and analyze this accident, the formal system @-calculus is generalized into the “labeled” @-calculus so as to describe time-concerned recognition, knowledge, belief and decision of humans besides external physical or logical phenomena, while the word ‘time-concerned’ is used to express the property not only time-dependent mathematically but also distinctively featured by subtle and sophisticated sensitivity, interest or concern in exact time.

Topics: Artificial intelligence, logic, mathematical knowledge management.

Keywords

Labeled @-calculus time-concerned knowledge and belief Shigaraki Kougen Railway accident 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Tetsuya Mizutani
    • 1
  • Shigeru Igarashi
    • 2
  • Yasuwo Ikeda
    • 3
  • Masayuki Shio
    • 4
  1. 1.Department of Computer ScienceUniversity of Tsukuba 
  2. 2.Graduate School of Community DevelopmentTokiwa University 
  3. 3.Department of Computer & Media ScienceSaitama Junior College 
  4. 4.College of Community DevelopmentTokiwa University 

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