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We present a new approximation algorithm for the two-dimensional bin-packing problem. The algorithm is based on two one-dimensional bin-packing algorithms. Since the algorithm is of next-fit type it can also be used for those cases where the output is required to be on-line (e. g. if we open an...
Persistent link: https://www.econbiz.de/10004964466
We develop a framework for automated optimization of stochastic simulation models using Response Surface Methodology … function is very expensive or time-consuming. Response Surface Methodology is frequently used for the optimization of … need to interfere in the optimization process. In our framework for automated optimization we describe all choices that …
Persistent link: https://www.econbiz.de/10004972270
the complete analysis of continuous optimization problems. Standard reasonable descents give a unified approach to all … central results outside optimization: the fundamental theorem of algebra, the maximum and the minimum principle of complex … function theorem. These optimization proofs compare favorably with the usual proofs and are all based on the same strategy …
Persistent link: https://www.econbiz.de/10005000447
In this paper we study a model to estimate the probability that a target group of an advertising campaign is reached by a commercial message a given number of times. This contact frequency distribution is known to be computationally difficult to calculate because of dependence between the...
Persistent link: https://www.econbiz.de/10008584719
In this paper we give a short novel proof of the well-known Lagrange multiplier rule, discuss the sources of the power of this rule and consider several applications of this rule. The new proof does not use the implicit function theorem and combines the advantages of two of the most well-known...
Persistent link: https://www.econbiz.de/10005504988
can be estimated by optimization of the goodness-of-fit. We compared the efficiency and accuracy of the Response Surface … Methodology and the Nelder and Mead Simplex Method for optimization of microsimulation models. To this end, we tested several … respect to accuracy, Response Surface Methodology performed better in case of optimization of the microsimulation model …
Persistent link: https://www.econbiz.de/10005450860
A railway system needs a substantial amount of maintenance. To prevent unexpected breakdowns as much as possible, preventive maintenance is required. In this paper we discuss the Preventive Maintenance Scheduling Problem (PMSP), where (short) routine activities and (long) unique projects have to...
Persistent link: https://www.econbiz.de/10005256413
In several disciplines, as diverse as shape analysis, location theory, quality control, archaeology, and psychometrics, it can be of interest to fit a circle through a set of points. We use the result that it suffices to locate a center for which the variance of the distances from the center to...
Persistent link: https://www.econbiz.de/10005042238