@ARTICLE { Rsds4017,
author = {Fryc, Barbara and Suraj, Zbigniew}, 
title = {Timed Approximate Petri Nets}, 
journal = {Fundamenta Informaticae}, 
number = 	{(no. 1)}, 
volume = 71}, 
pages = {83--99}, 
publisher = {IOS Press}, 
address = {Amsterdam, The Netherlands}, 
year = 2006, 
abstract = {Time is one of the most important considerations in designing practical systems. The notion of time plays a vital role in performance evaluation of real-time systems. A new class of timed approximate Petri nets (TAP-nets) is proposed in the paper. This net model combines high-level Petri nets with time and uncertain information. The approach presented in the paper for modelling of uncertainty, imprecision and vagueness is based on rough set theory and fuzzy Petri nets. The TAP-nets can be used for modelling and evaluating of approximate reasoning used to build expert systems, control systems, communication systems, etc. The main advantage of modelling practical systems using the TAP-nets is that the resulting models are simple, intuitive and allow the system analyst to evaluate the performance of such system models.}, 
keywords = {rough sets, pattern recognition, database systems, }, 
}