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An efficient method for calculating the minimum distance from an operating point to a specific (hyperbolic) efficient frontier

机译:一种计算从操作点到特定(双曲线)有效边界的最小距离的有效方法

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摘要

This paper is concerned with movement from a current operating point so as to reach a 2D efficient frontier. After a discussion of different criteria for deciding on which point on the frontier to target, we focus, as an illustration, on a particular inventory management context and the use of the criterion of minimum distance from the current point to the frontier. Specifically, the efficient frontier turns out to be a hyperbola in a 2D representation of total (across a population of items) average stock (in monetary units) versus total fixed costs of replenishments per year. Any current (or proposed) operating strategy, differing from the class along the frontier, is located above the frontier. Finding the minimum distance from the current point to the frontier requires determining the smallest root of a quartic equation within a restricted range.
机译:本文关注的是从当前工作点开始的运动,以便达到2D有效边界。在讨论了用于确定要定位到边界上的哪个点的不同标准之后,我们将举例说明,重点关注特定的库存管理环境以及使用从当前点到边界的最小距离的标准。具体来说,有效边界是二维(总项目数)平均存量(以货币单位为单位)与每年固定补货总成本的双曲线。与边界类别不同的​​任何当前(或拟议)运营策略都位于边界上方。要找到从当前点到边界的最小距离,需要确定四次方程在限制范围内的最小根。

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