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Golub T.,Zaporizhzhya National Technical University
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

This paper discusses some basic methods of text documents classification. Results of its analysis are presented in the table of comparative characteristics in accordance with the list of proposed parameters. © 2016 National University Lviv Polytechnic. Source


Shkarupylo V.,Zaporizhzhya National Technical University
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

A technique of DEVS-driven (Discrete Event System Specification) distributed software systems validation has been proposed. As a case study the Composite Web Service usage scenario has been considered. There are have been considered two approaches to Composite Web Service validity checking - testing-driven one and the approach based on DEVS-driven simulation. Experimental results obtained have shown the reasonability of proposed technique practical usage. © 2016 National University Lviv Polytechnic. Source


Shcherbak N.,Zaporizhzhya National Technical University
Modern Problems of Radio Engineering, Telecommunications and Computer Science, Proceedings of the 13th International Conference on TCSET 2016 | Year: 2016

The method for test tasks quality assessment based on expert assessments of test tasks quality indexes has been developed. The single-layer perceptron simulation for test tasks quality assessment problem solving has been conducted. The network structure has been chosen, the training sequence has been prepared and the neural network training has been carried out. The mathematical model has been built and its analysis has been conducted. © 2016 National University Lviv Polytechnic. Source


Subbotin S.A.,Zaporizhzhya National Technical University
Automatic Control and Computer Sciences | Year: 2013

The development of mathematical software for training sampling is considered. Exhaustive and evolutionary sampling methods are developed. Criteria for selection, censoring, and pseudoclustering of instances are introduce in these methods. This makes it possible to speed up the sampling process and to ensure the compliance of the samples with the limited size. The proposed methods allow for the automatic allocation of a subset of instances with the minimal size from the original sample. The subset contains the most important instances for the model's construction. The complexity estimates of the developed methods are defined. Experiments to determine the practical applicability of the methods are conducted. The use of the proposed estimates and identified dependences makes it possible to take into account the available computer resources during the sampling. © 2013 Allerton Press, Inc. Source


Antonenko N.M.,Zaporizhzhya National Technical University
Materials Science | Year: 2015

We proposed a method for the determination of the stress–strain state of a multilayer plate with elastic links between the layers in the case of its three-dimensional deformation. The solution of the problem is based on the method of compliance functions with application of the two-dimensional Fourier integral transformation. We construct recursive relations for finding the compliance matrices. For a two-layer plate subjected to the action of normal concentrated loads, we analyze the influence of the coefficients of elastic links on the distribution of stresses and displacements in the layers. © 2015 Springer Science+Business Media New York Source

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