DCAT is an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web. Since its first release in 2014 as a W3C Recommendation, DCAT has seen a wide adoption across communities and domains, particularly in conjunction with implementing the FAIR data principles (for findable, accessible, interoperable and reusable data). These implementation experiences, besides demonstrating the fitness of DCAT to meet its intended purpose, helped identify existing issues and gaps. Moreover, over the last few years, additional requirements emerged in data catalogs, given the increasing practice of documenting not only datasets but also data services and APIs. This paper illustrates the new version of DCAT, explaining the rationale behind its main revisions and extensions, based on the collected use cases and requirements, and outlines the issues yet to be addressed in future versions of DCAT.

翻译：DCAT是一种旨在促进Web上发布的数据目录之间互操作性的RDF词汇表。自2014年作为W3C推荐标准首次发布以来，DCAT已在多个社区和领域得到广泛应用，特别是在实施FAIR数据原则（可查找、可访问、可互操作和可重用数据）的背景下。这些实施经验除了证明DCAT达成预期目标的适用性外，还帮助识别了现有问题和缺口。此外，近年来由于不仅记录数据集，还包括数据服务和API的做法日益普遍，数据目录中出现了新的需求。本文阐述了DCAT的新版本，基于收集的用例和需求解释了主要修订和扩展的设计原理，并概述了DCAT未来版本尚待解决的问题。