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When we model workflows with Petri nets, we call a workflow net sound, if it neither makes any transition dead nor it produces trash tokens in such a way that for every input token exactly one token appears eventually on the output place. We assume that the initial marking consists always of one...
This paper deals with new analytical and experimental aspects of influence of data structure and algorithm on sort dynamics. Traditional analysis of data structure-algorithm interface which based on computational complexity is incomplete because do not considers of dynamical effects in area...
In recent years light-weighted formal methods in construction and analysis of complex concurrent software system are of growing interest. In this paper a new rule-action based term rewriting framework, called TermWare, is proposed and its application to software system analysis is described to...
Logics for expressing properties of Petri hypernets, a visual formalism for modelling mobile agents, are proposed. Two classes of properties are of interest - the temporal evolution of agents and their structural correlation. In particular, we investigate how the classes can be combined into a...
It is shown that there don't exist quantum vector addition systems on various underlying structures for every number of productions. However, if the underlying vector space is restricted, such quantum vector addition systems exist.
The paper addresses problems of improving performance of rule-based classifiers constructed from imbalanced data sets, i.e., data sets where the minority class of primary importance is under-represented in comparison to majority classes. We introduced two techniques to detect and process...
A specification of systems based on message passing paradigm is proposed. To this end, an algebraic structure called a semiring of formal polynomials with restricted idempotency of multiplication is taken and fix-point equations specifying (parallel) systems are constructed. Their solution...
The paper proposes how to use static analysis to extract an abstract model of a system. The method uses techniques of program slicing to examine syntax of a system modeled as a set of timed automata with discrete data, a common input formalism of model checkers dealing with time. The method is...
Optimization of the speech recognition process is aiming at achieving short time of classification (speech to text system), while preserving the content of speech signal description, and all necessary details of speech signal in considered application. The goal of parametrization of the human's...
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