@INPROCEEDINGS { Rsds787,
author = {Peters, James F. and Skowron, Andrzej and Suraj, Zbigniew and Ramanna, Sheela}, 
title = {Guarded transitions in rough Petri nets}, 
booktitle = {Proc. of 7th European Congress on Intelligent Systems & Soft Computing (EUFIT'99)}, 
conference = {European Congress on Intelligent Techniques and Soft Computing}, 
pages = {203-212}, 
year = 1999, 
abstract = {This paper considers the construction of Petri nets to simulate conditional computation in various forms of systems. Coloured Petri nets underly the definition of a family of Petri nets based on rough set theory. Two families of guards on transitions are introduced: Lukasiewicz guards and rough guards. Lukasiewicz guards provide a basis for transitions with a form of continuous enabling. The notion of level-of-enabling of transitions is introduced. Rough guards on transitions are derived from approximations of our knowledge of input values.}}, 
keywords = {decision systems, enabling, guard, multi-valued logic, Petri nets, }, 
}