Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Viktor Stovba"'
Publikováno v:
Кібернетика та комп'ютерні технології, Iss 3, Pp 23-43 (2023)
Deterioration of moral and psychological state on the background of a full–scale war is observed in many social groups. Timely detection of various types of pre–depressive states and appropriate therapy is a critically important task nowadays. In
Externí odkaz:
https://doaj.org/article/a6d4c0985cd74400bcdf1986dbf7c7f7
Publikováno v:
Mathematics, Vol 12, Iss 10, p 1527 (2024)
Subgradient methods are frequently used for optimization problems. However, subgradient techniques are characterized by slow convergence for minimizing ravine convex functions. To accelerate subgradient methods, special linear non-orthogonal transfor
Externí odkaz:
https://doaj.org/article/4ccdb11cba5642caa2ae97135a3dc481
Autor:
Viktor Stovba, Oleksandr Zhmud
Publikováno v:
Кібернетика та комп'ютерні технології, Iss 4, Pp 45-55 (2022)
Introduction. Minimization of ravine convex functions, both smooth and non-smooth, arises in many problems of planning, control, stability analysis of dynamic systems, artificial intelligence, and machine learning. Therefore, the development of new a
Externí odkaz:
https://doaj.org/article/8014d1d6d2264210b4c2efe2dbe110f7
Autor:
Viktor Stovba
Publikováno v:
Кібернетика та комп'ютерні технології, Iss 3, Pp 23-36 (2022)
Introduction. The role of credit scoring in the work of financial institutions is difficult to overestimate. Accurate and efficient scorecards allow lenders to assess risks correctly and monitor their investments. Such cards should be based on reliab
Externí odkaz:
https://doaj.org/article/dcf579a7074747abb9cd78af1a505e1a
Autor:
Viktor Stovba
Publikováno v:
Journal of Numerical and Applied Mathematics. :92-107
In this paper, a mathematical model of an open twostage transportation problem and its two modifications are considered. The first modification takes into account the upper bounds of transitional points capacities, the second takes into account the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2208cdb011de9fe31a9d7e2cf67517d
https://doi.org/10.17721/2706-9699.2022.1.07
https://doi.org/10.17721/2706-9699.2022.1.07
Autor:
Viktor Stovba
Publikováno v:
Journal of Numerical and Applied Mathematics. :93-110
A special form (B-form) of methods of Quasi-Newton type is discussed, which makes it easy to interpret these methods as gradient in appropriately transformed argument space. B-form of the Davidon–Fletcher–Powell method is given and compared with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e79bd2d9eb054f15cf42241429912f08
https://doi.org/10.17721/2706-9699.2021.2.08
https://doi.org/10.17721/2706-9699.2021.2.08
Autor:
Viktor Stovba
Publikováno v:
Кібернетика та комп'ютерні технології, Iss 3, Pp 14-24 (2020)
Introduction. Linear regression parameters determination can be formulated as a non-smooth function minimization problem, which is Lp-norm of residual of the linear equations system. To solve it non-smooth function minimization methods can be used, e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a39580ac4506c6d383252ba8ea5fa246
http://cctech.org.ua/13-vertikalnoe-menyu-en/155-abstract-20-3-2-arte
http://cctech.org.ua/13-vertikalnoe-menyu-en/155-abstract-20-3-2-arte
Components of Oranta-AO software expert system for innovative application of blood pressure monitors
Autor:
Dmytro Vakulenko, Lyudmyla Vakulenko, Hryhoriy Zaspa, Serhii Lupenko, Petro Stetsyuk, Viktor Stovba
Publikováno v:
Journal of reliable intelligent environments.
The authors developed and substantiated the original methods of arterial oscillography, which were implemented in the developed Oranta-AO information system. The methods application to the arterial oscillogram registered at measurement of arterial pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccc87509cae558ea149b182a9eb32ba1
https://pubmed.ncbi.nlm.nih.gov/36157718
https://pubmed.ncbi.nlm.nih.gov/36157718
Publikováno v:
Communications in Computer and Information Science ISBN: 9783030109332
We consider two subgradient methods (methods A and B) for finding the minimum point of a convex function for the known optimal value of the function. Method A is a subgradient method, which uses the Polyak’s step in the original space of variables.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe766125f339adecc3ccbfc51aea602f
https://doi.org/10.1007/978-3-030-10934-9_4
https://doi.org/10.1007/978-3-030-10934-9_4
