Web vocabularies provide organization and orientation in information environments and can facilitate resource discovery and retrieval. Several tools have been developed that support quality assessment for the increasing amount of vocabularies expressed in SKOS and published as Linked Data. However, these tools do not yet take into account the users’ perception of vocabulary quality. In this paper, we report the findings from an online survey conducted among experts in the field of vocabulary development to study the perception and relevance of vocabulary quality issues in the context of real-world application scenarios. Our results indicate that structural and labeling issues are the most relevant ones. We also derived design recommendations for vocabulary quality checking tools.

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