The Open Government Data portals (OGD), thanks to the presence of thousands of geo-referenced datasets, containing spatial information are of extreme interest for any analysis or process relating to the territory. For this to happen, users must be enabled to access these datasets and reuse them. An element often considered as hindering the full dissemination of OGD data is the quality of their metadata. Starting from an experimental investigation conducted on over 160,000 geospatial datasets belonging to six national and international OGD portals, this work has as its first objective to provide an overview of the usage of these portals measured in terms of datasets views and downloads. Furthermore, to assess the possible influence of the quality of the metadata on the use of geospatial datasets, an assessment of the metadata for each dataset was carried out, and the correlation between these two variables was measured. The results obtained showed a significant underutilization of geospatial datasets and a generally poor quality of their metadata. In addition, a weak correlation was found between the use and quality of the metadata, not such as to assert with certainty that the latter is a determining factor of the former.

中文翻译：

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地理空间开放数据的使用和元数据质量

由于存在成千上万个包含空间信息的地理参考数据集，因此开放政府数据门户（OGD）对于与该领土有关的任何分析或过程都非常感兴趣。为此，必须使用户能够访问这些数据集并重新使用它们。通常认为阻碍OGD数据全面传播的一个因素是其元数据的质量。从对属于六个国家和国际OGD门户的超过160,000个地理空间数据集进行的实验研究开始，这项工作的首要目标是根据数据集的查看和下载情况，对这些门户的使用情况进行概述。此外，为了评估元数据质量对地理空间数据集使用的可能影响，对每个数据集的元数据进行了评估，并测量了这两个变量之间的相关性。所获得的结果表明，地理空间数据集未得到充分利用，其元数据质量普遍较差。另外，在元数据的使用和质量之间发现了弱的相关性，因此不能肯定地说后者是前者的决定因素。