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- W3081890945 abstract "Abstract — In this study, we examine the current state of supply chain integration, estimate the economic impact of inadequate integration, and identify opportunities for governmental organizations to provide critical standards infrastructures that will improve the efficiency of supply chain communications. The development of methods to reduce the impact of multicollinearity in the construction of a linear regression model is an urgent task of applied econometrics. The article proposes a method for reducing multicollinearity in the construction of a linear regression model for evaluating the supply chain impact on economy. In the case of non-stationary multidimensional time series, it is assumed that all variables have a polynomial trend. Each predictor x j (t) is decomposed into a trend and a remainder u j (t), and then a regression y(t) is constructed for time t and the remainder u j (t). In this case, the regression coefficients for u j (t) are equal to the regression coefficients for x j (t), but they are estimated using less correlated regressors SCM. The article gives a quantitative assessment of the increase in the accuracy of the forecast of the considered model in comparison with other models. In the case of spatial variables, the proposed approach is that some X j regressors SCM correlated with others are replaced by the sum of two summands. One of them is the predicted value of X j obtained from the regression equation X j on the predictor correlated with it; the other is the remainder of this regression U j . As a result, we get a new set of regressors SCM that are much less correlated with each other. The new regressors - the remnants of U j - are susceptible to meaningful interpretation. However, the new regression equation changes the regression coefficients only for variables that act as dependent variables in auxiliary regressions. The application of the proposed method is illustrated by examples through the supply chain process. Calculations are performed in the R software environment." @default.
- W3081890945 created "2020-09-08" @default.
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- W3081890945 date "2020-08-28" @default.
- W3081890945 modified "2023-09-23" @default.
- W3081890945 title "Examining the Supply Chain Integration Impact on Economy by Regression Model" @default.
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