Entropy as a measure of the uncertainty of demand in XYZ-model ranking and grouping of resources
MAGAZINE №1 (60) February 2014
AUTHOR ZAYTSEV E.I.
CATEGORY Optimization and economic-mathematical modeling Uncertainty and risk in the supply chain Inventory management
ABSTRACT
In paper the algorithm of perfection classical XYZ-analysis of stocks in logistics is considered. Feature of algorithm is ranging the goods is ranging the goods on accuracy of the forecast. Other feature of algorithm is application of an entropy for definition of uncertainty of demand. It is given an example XYZ - the analysis.
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The choice suppliers problem and the lot-sizing optimization under changing demand
MAGAZINE №1 (60) February 2014
AUTHOR BOCHKAREV A.A., BOCHKAREV P.A.
CATEGORY Reliability and stability of the supply chain Optimization and economic-mathematical modeling Sourcing Inventory management
ABSTRACT
It is shown that one of the typical problems in the logistics supply is the problem of calculating the optimum batch size of delivery, which is converted into a non-trivial task when you need to take into account in its decision a large number of restrictions: on the proposal of providers and consumer demand on storage capacity, low cost, etc. .
The article is devoted to the application of mathematical programming methods in solving the problem of suppliers selection and the lot-sizing optimization under changing demand
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