Search Results - subject:"Algorithms."

PRIOR INFORMATION IN ECONOMETRIC GLOBAL OPTIMIZATION PROBLEMS: A BOOTSTRAP APPROACH

Agapie, Adriana - In: Journal for Economic Forecasting (2000) 4, pp. 110-121

The paper analyzes the regression problem for small and undersized sample. Two classical algorithms are compared … the previous two algorithms. The author concludes that a complete comparison among SA, RSG and RSGBOOT has to be done … preliminary on every model to be estimated since these stochastic optimization algorithms are very sensitive to model …

Persistent link: https://www.econbiz.de/10005612292

Three Scheduling Algorithms Applied to the Earth Observing Systems Domain

Wolfe, William J.; Sorensen, Stephen E. - In: Management Science 46 (2000) 1, pp. 148-166

then introduced that outperforms the dispatcher by about 12% with only a small increase in run time. These algorithms set …

Persistent link: https://www.econbiz.de/10009204420

Revenue Management Without Forecasting or Optimization: An Adaptive Algorithm for Determining Airline Seat Protection Levels

Ryzin, Garrett van; McGill, Jeff - In: Management Science 46 (2000) 6, pp. 760-775

We investigate a simple adaptive approach to optimizing seat protection levels in airline revenue management systems. The approach uses only historical observations of the relative frequencies of certain seat-filling events to guide direct adjustments of the seat protection levels in accordance...

Persistent link: https://www.econbiz.de/10009208568

Inventory Management of Remanufacturable Products

Toktay, L. Beril; Wein, Lawrence M.; Zenios, Stefanos A. - In: Management Science 46 (2000) 11, pp. 1412-1426

We address the procurement of new components for recyclable products in the context of Kodak's single-use camera. The objective is to find an ordering policy that minimizes the total expected procurement, inventory holding, and lost sales cost. Distinguishing characteristics of the system are...

Persistent link: https://www.econbiz.de/10009208991

An algorithm for handling exceptional elements in cellular manufacturing systems

Ang, David S. - In: Industrial Management & Data Systems 100 (2000) 6, pp. 251-254

The paper develops an algorithm for eliminating bottleneck parts in a cellular manufacturing setting. Bottlenecks are eliminated by determining the machine duplication pattern that minimizes total duplication costs. A unique feature of the algorithm is that it recognizes that under some...

Persistent link: https://www.econbiz.de/10014823619

Non-linear modelling of integrated energy supply and demand systems

Sorensen, Bent - In: International Journal of Global Energy Issues 12 (1999) 1/2/3/4/5/6, pp. 131-137

An approach to energy systems modelling is presented. It employs a mixture of non-linear programming techniques considered suitable for the particular structure of energy models, in order to overcome the problems encountered in optimisation with a non-trivial objective function topology, e.g....

Persistent link: https://www.econbiz.de/10010816865

Two-dimensional road shape optimisation using genetic algorithms

Liatsis, P; Tawfik, H.M - In: Mathematics and Computers in Simulation (MATCOM) 51 (1999) 1, pp. 19-31

of alternating straight section and curve segment arrangement. We utilise genetic algorithms to optimise the road shape …

Persistent link: https://www.econbiz.de/10010869929

Nonlinear index prediction

Zemke, Stefan - In: Physica A: Statistical Mechanics and its Applications 269 (1999) 1, pp. 177-183

Neural network, K-nearest neighbor, naive Bayesian classifier and genetic algorithm evolving classification rules are compared for their prediction accuracies on stock exchange index data. The method yielding the best result, nearest neighbor, is then refined and incorporated into a simple...

Persistent link: https://www.econbiz.de/10010874245

A Comprehensive System for the Exploration and Analysis of Hydrological Data

Tsakalias, George; Koutsoyiannis, Demetris - In: Water Resources Management 13 (1999) 4, pp. 269-302

A new approach is developed for the automatic (computer based) exploration and analysis of hydrological data, particularly focused on the identification of shifting relationships among hydrological variables. The methodology developed is applicable to many hydrological problems, such as...

Persistent link: https://www.econbiz.de/10010847319

Performance of data networks with random links

Fukś, Henryk; Lawniczak, Anna T. - In: Mathematics and Computers in Simulation (MATCOM) 51 (1999) 1, pp. 101-117

We investigate simplified models of computer data networks and examine how the introduction of additional random links influences the performance of these networks. In general, the impact of additional random links on the performance of the network strongly depends on the routing algorithm used...

Persistent link: https://www.econbiz.de/10011050343