Economy, finances, management: topical issues of science and practical activity

SCIENTIFIC JOURNALS OF VINNITSA NATIONAL AGRARIAN UNIVERSITY

Issue №: 8 (48)

Published: 2019.09.17

DOI: 10.37128/2411-4413-2019-8

Description:
The magazine deals with the problems of the agricultural sector of the economy in the context of integration and processes of globalization. Attention is paid to the issues of development of digital economy, rural territories, technologies of enterprise management and organization of accounting, problems of legal support of economic processes, market tendencies of development of various branches of economy. Particular attention is paid to green tourism as a promising segment of the national economy.

Read about journal

AUTOMATED INFORMATION SYSTEM FOR APPROXIMATION OF ECONOMIC INDICATORS

DOI: 10.37128/2411-4413-2019-8-4

PDF Повернутись

DZIS Victor, Candidate of Technical Sciences, Associate Professor, Department of Mathematics,

Physics and Computer Technologies of Vinnytsia National Agrarian University (21008, 21008, м.

Вінниця, 3, Soniachna Str.e-mail: dzisvg@gmail.com)

Annotation

The article describes an automated information system for the approximation of economic

indicators. Verification of models and determination of their parameters is performed automatically

without user intervention. The mathematical model is based on a linear combination of a function with

weights. At the first stage, a library of mathematical functions, a system of normal equations of the least

squares method, blocks for determining unknown parameters of mathematical dependencies and their

main statistical characteristics: correlation coefficient Y Yrˆ,, sum of squares of deviations of tabular values

of indicators from estimated by regression equation, absolute the forecast bias indicator, the average

absolute forecast error, the root mean square error, the average absolute error; average relative error in

percent; Teil’s mismatch coefficient .

At the second stage, unknown parameters for all equations are determined, the value of the

dependent variable, the value of the correlation coefficient and the average relative error are estimated

for each equation. Only those functions for which and are selected for further processing. For the selected

functions, by the values of: ,ˆ, Y Yr, SEE , ME , MAE, MSE, MPE , MAPETK, the method of expert

estimates determines the ranks of each function, evaluates the coefficient of concordance, builds a matrix

of advantages. The ranks determine the normalized weights for the composite functions of the model. At

the third stage, a mathematical model is formed, its parameters and statistical characteristics are

estimated a graph of the selection of parameters and a graph of absolute deviations are displayed. In the

case of changes in input parameters (variable values, number of indicators, etc.), the information system

automatically updates the model.

Keywords: automated information system, approximation, linear combination of functions, sampling, correlation coefficient, approximation error, Tayla coefficient, matrix of preferences, weight coefficients.

List of references

1. Prokhorov, S.A., Firsov, V.A., Krivosheev, O.A. & dr. (1995). Avtomatizirovannye sistemy dlya

nauchnykh issledovaniy [Automated systems for scientific research]. Samara: NPTS «Aviator» [in Russian].

2. Greshilov, A.A., Skakun, V.A., Skakun, A.A. (1997). Matematicheskie metody postroeniya

prognozov [Mathematical methods for forecasting]. Moscow: Radio i svyaz' [in Russian].

3.Greshilov, A.A. (2006). Matematicheskie metody prinyatiya resheniy [Mathematical methods of

decision making]. Moscow: MGTU im. N.E. Baumana [in Russian].

4. Toshyns'kyy, V.I., Lysachenko, I.H., Zhadan, Yu.V. (2012). Avtomatyzovana systema

naukovykh doslidzhen' v protsesi katalitychnoho okyslennya oksydu vuhletsyu [Automated system of

scientific researches in the process of catalytic oxidation of carbon oxide]. Vcheni zapysky KHIU –

Uchenye zapiski XIU, Vyp. 13, 282-284 [in Ukrainian].

5. Herasymov, B.M., Lokazyuk, V.M., Oksiyuk, O.H., Pomorova, O.V. (2007). Intelektual'ni

systemy pidtrymky pryynyattya rishen' [Intelligent decision support systems]. Kyiv: Vydavnytstvo

Yevropeys'koho universytetu [in Ukrainian].

6. Dubakov, A.A. (2011). Proektirovanie informatsionnykh sistem: Uchebnoe posobie [Designing

Information Systems: Tutorial] . Tomsk: Izd-vo Tomskogo politekhnicheskogo universiteta [in Russian].

7. Orlov, A.I. (1996). Ekspertnye otsenki [Expert assessments]. Zavodskaya laboratoriya - Plant

Laboratory, 62 (1), 54-60.

8. Orlov, A.I. (2004). Teoriya prinyatiya resheniy. Uchebnoe posobie [Decision making theory.

Tutorial]. Moscow: Izdatel'stvo «Mart» [in Russian].

All journal issues

About the journal

Topics of the journal:

С1 Economics and International Economic Relations (by specialization)

D1 Accounting and Taxation

D2 Finance, Banking, Insurance and Stock Market

D3 Management

D4 Public Management and Administration

D5 Marketing

D7 Trade

J3 Tourism and Recreation

Keywords: economics , international economic relations , accounting , taxation , finance , banking , insurance , stock market , management , public management and administration , marketing , trade , tourism and recreation

Key information:

ISSN (print): 2411-4413

DOI: 10.37128

All-Ukrainian scientific and production journal “Economics, finance, management: topical issues of science and practical activity” is a peer-reviewed open-access journal that publishes original research, theoretical articles and reviews on a wide range of economic and business issues. The articles, which have scientific and scientific-practical significance, highlight theoretical and methodological aspects of the development of agrarian sector of economy and related industries, the results of fundamental and applied research.

The purpose of the journal is to highlight the results of fundamental and applied research in the field of economic sciences, aimed at developing modern approaches to managing economic processes, financial support for enterprise activities and increasing the efficiency of economic systems. The publication is focused on creating a scientific environment for the exchange of research results between scientists, higher education students and practitioners in economic sphere, as well as on the dissemination of modern scientific and methodological approaches to solving current economic and management problems. The journal contributes to the development of the research in the field of enterprise economics, finance, accounting, auditing, management, marketing, entrepreneurship, trade, tourism and recreation, public management and administration, economic development and international economic relations, which meets the modern needs of the socio-economic development of the state.

The journal’s objectives are:

• publishing the results of fundamental and applied research in the fields of economics, international economic relations, finance, management, public administration, accounting, marketing, tourism and recreation, and entrepreneurship;

• promoting the development of modern methods of managing enterprises and organizations, increasing the efficiency of using financial and material resources;

• supporting the research aimed at improving the economic mechanisms of enterprise functioning, developing innovative activity, and increasing the competitiveness of economic structures;

• ensuring the scientific exchange of research results between higher education institutions, scientific institutions, and business entities;

• developing methods of economic analysis, forecasting, and modeling of socio-economic processes;

• disseminating of modern approaches to financial management, accounting, taxation, and control of economic activity;

• promoting the development of interdisciplinary research related to the economic support of the development of agrarian sector of economy and rural areas;

• integration of scientific research results into the international scientific space and increasing the level of scientific communication.

Publisher: Vinnytsia National Agrarian University

Link to the journal on the publisher’s website: ”Economics, finance, management: topical issues of science and practical activity”

Frequency of issue: 4 times a year.

Language of publication: Ukrainian, English.

Editor-in-Chief: Inna Honcharuk

State registration: Decision of the National Council of Ukraine on Television and Radio Broadcasting No. 1337 and No. 1178. Media identifier – R30-05171. Publisher registration number (EDRPOU) 00497236.

Publisher’s ROR: https://ror.org/05m3ysc06 Publisher’s DOI prefix: 10.37128 ISSN (print): 2411-4413

Publisher DOI prefix: 10.37128 ISSN (print): 2411-4413

The scientific journal is included in category "B" of the List of scientific professional publications of Ukraine, in which the results of dissertations for the degree of Doctor and Candidate of Sciences in the specialties C1 (051) - Economics, D1 (071) - Accounting and Taxation, D2 (072) – Finance, Banking, Insurance and Stock Market, D3 (073) – Management, D5 (075) – Marketing, D7 (076) – Entrepreneurship and Trade, (241) – Hotel and Restaurant Business, D4 (281) – Public Management and Administration (Order of the Ministry of Education and Science of Ukraine dated March 17, 2020 №409)

History of journal:

Founded in 1997 under the name ”Bulletin of Vinnytsia State Agricultural Institute”. In 2010-2014 it was published under the name “Collection of Scientific Papers of Vinnytsia National Agrarian University”. Since 2015 “Economics, finance, management: current issues of science and practical activity” (Certificate of State Registration of Mass Media No. 21154-10954 PR dated 12/31/2014).