The more you do, the more you save: the superlinear cost avoidance effect of systems product line engineering

Susan P. Gregg, Rick Scharadin, P. Clements
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引用次数: 17

Abstract

Product lines that use automated tools to configure shared assets (e.g., software or requirements or test cases or user documentation) based on product descriptions have long been known to bring about substantial development cost avoidance when compared to clone-and-own or product-specific development techniques. Now, however, it can be shown that the cost avoidance for configuring multiple shared assets is superlinear -- that is, the overall cost avoidance exceeds the sum of the that brought about by working with each of the shared assets in isolation. That is, a product line that configures (for example) requirements and code will avoid more cost than the sum of code-based plus requirements-based cost avoidance. In addition, we also observe a superlinear effect in terms of the number of products in the portfolio as well. This paper explores why these effects occur, and presents analytical and empirical evidence for their existence from one of the largest and most successful product lines in the literature, the AEGIS Weapon System. The result may lead to new insight into the economics of product line engineering in the systems engineering realm.
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做的越多,节省的就越多:系统产品线工程的超线性成本规避效应
使用自动化工具来配置基于产品描述的共享资产(例如,软件或需求或测试用例或用户文档)的产品线,与克隆和拥有或特定于产品的开发技术相比,长期以来一直被认为能够带来大量的开发成本避免。然而,现在可以证明,配置多个共享资产的成本避免是超线性的——也就是说,总体成本避免超过了单独使用每个共享资产所带来的成本总和。也就是说,配置(例如)需求和代码的产品线将比基于代码和基于需求的成本避免的总和避免更多的成本。此外,我们还观察到投资组合中产品数量的超线性效应。本文探讨了这些影响发生的原因,并从文献中最大和最成功的产品线之一宙斯盾武器系统中提出了它们存在的分析和经验证据。结果可能会导致对系统工程领域中产品线工程经济学的新见解。
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