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Project time-cost trade-off: a Bayesian approach to update project time and cost estimates

机译:项目时间成本权衡:一种贝叶斯方法来更新项目时间和成本估算

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摘要

Uncertainties among time and cost items are important to consider because of their immense impacts on the overall performance of any project. In this paper, a project's cost and time elements are improved by crashing and a Bayesian Belief Network (BBN) model is developed to handle the uncertainties. BBN provides a framework for presenting causal relationships and enables probabilistic inference among a set of variables. The approach used in this paper can explicitly quantify the cost amount and time taken in various circumstances considering all the relevant uncertainties among the elements.The total cost and time of any project can be projected in this approach very effectively with certain probabilities. Sensitivity analysis is also performed to find the most important tasks of the project in terms of cost and time. The capabilities of the proposed approach are explained by an empirical example and the results of the proposed method are compared with those of other popular project management tools.
机译:时间和成本项目之间的不确定性非常重要,因为它们对任何项目的整体绩效都会产生巨大影响。本文通过崩溃改善了项目的成本和时间要素,并开发了贝叶斯信念网络(BBN)模型来处理不确定性。 BBN提供了一个表示因果关系的框架,并允许在一组变量之间进行概率推断。考虑到要素之间所有相关的不确定性,本文所使用的方法可以明确量化各种情况下的成本金额和时间。使用这种方法可以非常有效地预测任何项目的总成本和时间,并且具有一定的概率。还进行了敏感性分析,以找到成本和时间方面最重要的项目任务。通过一个实例说明了该方法的功能,并将该方法的结果与其他流行的项目管理工具进行了比较。

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