Permanence and Temporal Interoperability of Metadata in the Linked Open Data Environment

Shigeo Sugimoto, Chunqiu Li, Mitsuharu Nagamori, Jane Greenberg

Abstract


This paper discusses longevity issues of metadata in the
Linked Open Data (LOD) environment, where metadata is transferred and shared on
the open Web as a digital object. The fundamental issue of metadata permanence
is to keep metadata interpretable by machines and humans over time. The goal of
this discussion is to clarify risks in permanence of metadata and issues in the
long-term management of metadata and metadata schemas in the LOD environment.
This paper discusses metadata longevity from a few different viewpoints in order
to clarify the requirements of metadata permanence in the LOD environment, which
are different from those in conventional document-like object environment or
database-centric environment. Longevity of metadata is, in other words, the
temporal interoperability of metadata. This paper uses the Metadata Application
Profile methodology supported by the Dublin Core Metadata Initiative (DCMI) and
DCMI’s layered model of metadata interoperability to understand the nature of
metadata in the LOD environment. Then, this paper discusses metadata longevity
based on a set of facets of metadata entities such as metadata schemas. Finally,
it briefly discusses issues to use provenance description of metadata schemas
and metadata schema registries from the viewpoint of long-term maintenance of
metadata schemas

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