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Scheduling non-critical activities using multicriteria approach

机译:使用多准则方法安排非关键活动

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摘要

In many projects the problem of selecting the start time of a non-critical activity arises. Usually it is possible to use the “as soon as possible” or “as late as possible” rules. In some situations, however, the result of such a decision depends on external factors such as exchange rate. This leads to an approach in which the problem of scheduling non-critical activities is solved using an expanded Cox–Ross–Rubinstein (CRR) binomial tree method. In the paper a bi-criteria problem of determining the start time of a non-critical activity is considered. We assume that the early start and the late start of the activity have been identified using Critical Path Method, but the project manager is free to select the time when the activity will actually be started. This decision cannot, however, be changed later, as it is associated with the allocation of key resources. Two main criteria are considered: cost and risk. While cost depends on exchange rate, risk increases with the delay of the start of the activity. The problem can be described as a dynamic process. We propose a new interactive technique for solving such a bi-criteria decision making problem under risk. The procedure uses trade-offs to identify a candidate solution. The CRR binomial method is applied to evaluate the cost of the activity.
机译:在许多项目中,出现了选择非关键活动的开始时间的问题。通常可以使用“尽快”或“尽可能晚”的规则。但是,在某些情况下,这种决定的结果取决于汇率等外部因素。这导致了一种方法,其中使用扩展的Cox–Ross–Rubinstein(CRR)二项式树方法解决了安排非关键活动的问题。在本文中,考虑了确定非关键活动的开始时间的双标准问题。我们假设已使用关键路径方法确定了活动的早期开始和晚期开始,但是项目经理可以自由选择实际开始活动的时间。但是,此决定以后无法更改,因为它与关键资源的分配相关联。考虑了两个主要标准:成本和风险。虽然成本取决于汇率,但风险随着活动开始的延迟而增加。该问题可以描述为一个动态过程。我们提出了一种新的交互式技术,用于解决处于风险下的双准则决策问题。该过程使用权衡关系来确定候选解决方案。 CRR二项式方法用于评估活动的成本。

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