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Optimal control of bank investment as a factorof economic stability
Computer Research and Modeling, 2012, v. 4, no. 4, pp. 959-967Views (last year): 5.This paper presents a model of replenishment of bank liquidity by additional income of banks. Given the methodological basis for the necessity for bank stabilization funds to cover losses during the economy crisis. An econometric derivation of the equations describing the behavior of the bank financial and operating activity performed. In accordance with the purpose of creating a stabilization fund introduces an optimality criterion used controls. Based on the equations of the behavior of the bank by the method of dynamic programming is derived a vector of optimal controls.
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An automated system for program parameters fine tuning in the cloud
Computer Research and Modeling, 2015, v. 7, no. 3, pp. 587-592The paper presents a software system aimed at finding best (in some sense) parameters of an algorithm. The system handles both discrete and continuous parameters and employs massive parallelism offered by public clouds. The paper presents an overview of the system, a method to measure algorithm's performance in the cloud and numerical results of system's use on several problem sets.
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Query optimization in relational database systems and cloud computing technology
Computer Research and Modeling, 2015, v. 7, no. 3, pp. 649-655Views (last year): 1.Optimization is the heart of relational Database Management System (DMBS). Its can analyzes the SQL statements and determines the most efficient access plan to satisfy every query request. Optimization can solves this problem and analyzes SQL statements specifying which tables and columns are available. And then request the information system and statistical data stored in the system directory, to determine the best method of solving the tasks required to comply with the query requests.
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Pre-decomposition of discrete optimization problems to speed up the branch and bound method in a distributed computing environment
Computer Research and Modeling, 2015, v. 7, no. 3, pp. 719-725The paper presents an implementation of branch and bound algorithm employing coarse grained parallelism. The system is based on CBC (COIN-OR branch and cut) open-source MIP solver and inter-process communication capabilities of Erlang. Numerical results show noticeable speedup in comparison to single-threaded CBC instance.
Keywords: branch and bound algorithm, coarse grained parallelism.Views (last year): 2. Citations: 2 (RSCI). -
An implementation of a parallel global minimum search algorithm with an application to the ReaxFF molecular dynamic force field parameters optimization
Computer Research and Modeling, 2015, v. 7, no. 3, pp. 745-752Views (last year): 1. Citations: 1 (RSCI).Molecular dynamic methods that use ReaxFF force field allow one to obtain sufficiently good results in simulating large multicomponent chemically reactive systems. Here is represented an algorithm of searching optimal parameters of molecular-dynamic force field ReaxFF for arbitrary chemical systems and its implementation. The method is based on the multidimensional technique of global minimum search suggested by R.G. Strongin. It has good scalability useful for running on distributed parallel computers.
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International Interdisciplinary Conference "Mathematics. Computing. Education"