Martín Laura, Lanza Jorge, González Víctor, Santana Juan Ramón, Sotres Pablo, Sánchez Luis
Network Planning and Mobile Communications Laboratory, Universidad de Cantabria, Plaza de la Ciencia s/n, 39005 Santander, Spain.
Sensors (Basel). 2024 Mar 6;24(5):1695. doi: 10.3390/s24051695.
Nowadays, there are plenty of data sources generating massive amounts of information that, combined with novel data analytics frameworks, are meant to support optimisation in many application domains. Nonetheless, there are still shortcomings in terms of data discoverability, accessibility and interoperability. Open Data portals have emerged as a shift towards openness and discoverability. However, they do not impose any condition to the data itself, just stipulate how datasets have to be described. Alternatively, the NGSI-LD standard pursues harmonisation in terms of data modelling and accessibility. This paper presents a solution that bridges these two domains (i.e., Open Data portals and NGSI-LD-based data) in order to keep benefiting from the structured description of datasets offered by Open Data portals, while ensuring the interoperability provided by the NGSI-LD standard. Our solution aggregates the data into coherent datasets and generate high-quality descriptions, ensuring comprehensiveness, interoperability and accessibility. The proposed solution has been validated through a real-world implementation that exposes IoT data in NGSI-LD format through the European Data Portal (EDP). Moreover, the results from the Metadata Quality Assessment that the EDP implements, show that the datasets' descriptions generated achieve excellent ranking in terms of the Findability, Accessibility, Interoperability and Reusability (FAIR) data principles.
如今，有大量数据源生成海量信息，这些信息与新颖的数据分析框架相结合，旨在支持许多应用领域的优化。尽管如此，在数据的可发现性、可访问性和互操作性方面仍存在不足。开放数据门户的出现是朝着开放性和可发现性迈出的一步。然而，它们并未对数据本身施加任何条件，只是规定了数据集的描述方式。另外，NGSI-LD标准致力于在数据建模和可访问性方面实现统一。本文提出了一种解决方案，将这两个领域（即开放数据门户和基于NGSI-LD的数据）连接起来，以便既能受益于开放数据门户提供的数据集结构化描述，又能确保NGSI-LD标准所提供的互操作性。我们的解决方案将数据聚合为连贯的数据集并生成高质量描述，确保全面性、互操作性和可访问性。所提出的解决方案已通过一个实际应用得到验证，该应用通过欧洲数据门户（EDP）以NGSI-LD格式公开物联网数据。此外，EDP实施的元数据质量评估结果表明所生成的数据集描述在数据的可发现性、可访问性、互操作性和可重用性（FAIR）原则方面获得了优异排名。
