Inventory Production Theory A Linear Policy Approach Christoph A. Schneeweiss

ISBN: 9783540084433

Published: September 1st 1977

Paperback

118 pages


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Inventory Production Theory A Linear Policy Approach  by  Christoph A. Schneeweiss

Inventory Production Theory A Linear Policy Approach by Christoph A. Schneeweiss
September 1st 1977 | Paperback | PDF, EPUB, FB2, DjVu, AUDIO, mp3, RTF | 118 pages | ISBN: 9783540084433 | 10.19 Mb

The term inventory-production theory is not well defined. It com prises e. g. such models like cash balance models, production smoothing models and pure inventory models. We shall here mainly be concerned with stochastic dynamic problems and shallMoreThe term inventory-production theory is not well defined.

It com prises e. g. such models like cash balance models, production smoothing models and pure inventory models. We shall here mainly be concerned with stochastic dynamic problems and shall give exact definitions in the next section. Most of our work will concentrate on cash balance models. However, production smoothing situations and pure inventory problems will also be investigated.

Since we are faced in principle with dynamic stochastic situa tions a dynamic programming approach would be appropriate. This approach, however, due to computational restraints, is limited to only but the simplest models. Therefore, in practice, one ruduces stochastics just in taking forecasts of demand and then treating the problem as a deterministic optimization problem. In addition one often introduces certain safety stocks to safeguard the system from possible forecasting errors.

In general, this proce dure is suboptimal. However, there exists one particular situa tion when a separation in a forecasting procedure and a subse quent optimization of the remaining deterministic model is not suboptimal. This is known as the linear-quadratic model, i. e. a model having linear system equations and a quadratic cost crite rion. For this type of model H. A. Simon 3J and later H. Theil [25J have shown that the above separation property holds.

In fact, Simons and Theils results are nothing else but what has later and more generally become known to control engineers as Kalmans famous separation principle.



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