Scholarly resources, just like any other resources on the web, are subject to reference rot as they frequently disappear or significantly change over time. Digital Object Identifiers (DOIs) are commonplace to persistently identify scholarly resources and have become the de facto standard for citing them. We investigate the notion of persistence of DOIs by analyzing their resolution on the web. We derive confidence in the persistence of these identifiers in part from the assumption that dereferencing a DOI will consistently return the same response, regardless of which HTTP request method we use or from which network environment we send the requests. Our experiments show, however, that persistence, according to our interpretation, is not warranted. We find that scholarly content providers respond differently to varying request methods and network environments and even change their response to requests against the same DOI. In this paper we present the results of our quantitative analysis that is aimed at informing the scholarly communication community about this disconcerting lack of consistency.

中文翻译：

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关于学术网络持久标识符的持久性

学术资源，就像网络上的任何其他资源一样，会受到引用腐烂的影响，因为它们经常消失或随着时间的推移发生显着变化。数字对象标识符 (DOI) 常用于持续识别学术资源，并已成为引用它们的事实上的标准。我们通过分析网络上的分辨率来研究 DOI 持久性的概念。我们对这些标识符的持久性有信心，部分原因是假设取消引用 DOI 将始终返回相同的响应，无论我们使用哪种 HTTP 请求方法或从哪个网络环境发送请求。然而，我们的实验表明，根据我们的解释，持久性是没有必要的。我们发现学术内容提供商对不同的请求方法和网络环境的响应不同，甚至对针对相同 DOI 的请求的响应也发生了变化。在本文中，我们展示了定量分析的结果，旨在让学术交流社区了解这种令人不安的缺乏一致性。