Improving heuristics for the frequency assignment problem

Article Abstract:

Lower bounding techniques were employed to address a frequency assignment problem. The techniques, which perform better than direct heuristic application, are specifically proven effective in assignment problems that result from practice since they are often able to achieve good bounds from such kind of constraints. Lower bounding techniques involve identification of best lower bounds from the complete problem's subproblem.

Radio & TV communications equipment, Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing, General Radio Equip, Research, Radio broadcasting, Frequency allocation (Telecommunications), Radio frequency allocation, Radio equipment, Graph theory

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Mixed integer programming for the 0-1 maximum probability model

Article Abstract:

The 0-1 maximum probability model that consists in maximizing the probability that a certain quantity c(super T)x is greater than a prescribed constant t, where c and x are n vectors is studied. The solution for the problem using mixed integer programming is presented, which reveals that this technique enables to treat instances with up to 100 random variables in a few seconds of CPU time.

Probabilities, Probability theory, Stochastic programming

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Improving activity-based costing heuristics by higher-level cost drivers

Article Abstract:

The simulations and mixed-integer programming are used to analyze the extent of the sub-optimality incurred by activity-based costing (ABC) heuristics. One of the main findings reveals that a heterogeneity driver, used to proportionalize all costs due to inflexible overhead resources, improves the quality of ABC-heuristics significantly.

Cost Accounting, Evaluation

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