Earned duration management (EDM) is a methodology for project schedule management (PSM) that can be considered an alternative to earned value management (EVM). EDM provides an estimation of deviations in schedule and a final project duration estimation. There is a key difference between EDM and EVM: In EDM, the value of activities is expressed as work periods; whereas in EVM, value is expressed in terms of cost. In this paper, we present how EDM can be applied to monitor and control stochastic projects. To explain the methodology, we use a real case study with a project that presents a high level of uncertainty and activities with random durations. We analyze the usability of this approach according to the activities network topology and compare the EVM and earned schedule methodology (ESM) for PSM.

挣值工期管理 (EDM) 是项目进度管理 (PSM) 的一种方法，可被视为挣值管理 (EVM) 的替代方法。EDM 提供对进度偏差的估计和最终的项目持续时间估计。EDM 和 EVM 之间有一个关键区别：在 EDM 中，活动的价值表示为工作时间；而在 EVM 中，价值以成本表示。在本文中，我们介绍了如何将 EDM 应用于监视和控制随机项目。为了解释该方法，我们使用了一个真实的案例研究，该项目具有高度的不确定性和随机持续时间的活动。我们根据活动网络拓扑分析这种方法的可用性，并比较 PSM 的 EVM 和赢得进度方法 (ESM)。