Control Systems and Computers, N6, 2019, Article 2

https://doi.org/10.15407/csc.2019.06.021

Control Systems and Computers, 2019, Issue 6 (284), pp. 21-27.

UDK  364.2:331; 681.513

A.N. Nahirna, PhD, Physical and mathematical, Associate ProfessorNational University of “Kyiv-Mohyla Academy”, 2 Skovoroda st., Kyiv, 04070, Ukraine naghirnaalla@ukr.net

 Quadratic Problem on Combinations Set and
Method of its Solution

Introduction. When modeling different kinds of processes and phenomena in different spheres of activity, the models that represent quadratic problems of conditional optimization are used quite often. Particularly noteworthy are models of such problems considered on combinatorial sets, in particular, combinations. Despite the simplicity of presentation, this type of problem are cumbersome, from a computational point of view. Therefore, there is a need to build new methods and an algorithm for solving them.

Purpose. The purpose of this article is to present a method for solving a quadratic problem with the additional constraints on many combinations. This method allows for a finite number of steps to find the optimal solution of the formulated problem. The use of this method is shown in the numerical example.

Methods. Methods for solving a problem with a quadratic objective function on  combinations set.

Results. An optimization problem on a set of combinations with a quadratic objective function and additional constraints is formulated. The method of its solution is proposed, which consists of finding the basic solutions, using the properties of the multiple combinations, as well as finding the increments of constraints and function of the goal. An example of solving a problem using the proposed method is presented.

Conclusion. The proposed method can be used to solve the conditional optimization problems with a quadratic objective function on a set of combinations.

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 Keywords:  optimization, quadratic problem, quadratic function, set combinations, increment of goal function, increment of additional constraint, reference solution, optimal solution.

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  Received 03.12.2019