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<Paper uid="W04-0602">
  <Title>Towards Metadata Interoperability</Title>
  <Section position="11" start_page="12" end_page="12" type="concl">
    <SectionTitle>
6 Conclusion
</SectionTitle>
    <Paragraph position="0"> The work on metadata interoperability in the two projects mentioned clearly indicate that this type of work is in its beginning phase. Ad hoc methods are used to achieve high speed and to guarantee efficient exchange of knowledge components, but they form obstacles on the way towards a flexible and open Semantic Web type of infrastructures. The examples indicate that the chosen mapping strategies lead to the expected results in many cases. They also indicate some of the problems that are associated with using specific elements for searching. Amongst others these are caused by sparsely filled in metadata descriptions, unawareness about the underlying element semantics, insufficient mappings between meta-data elements and thesaurus concepts.</Paragraph>
    <Paragraph position="1"> The usage of ISO 11179 and ISO 12620 compliant open Data Category Registries for machine readable definitions of metadata concepts within INTERA is a first step in the right direction.</Paragraph>
    <Paragraph position="2"> However, other disciplines than linguistics lack such a widely agreed registry type. For building up and combining repositories of RDF-based relations between registered concepts there is yet no infrastructure. Even in the linguistics domain yet there is no suggestion for standards. ISO TC37/SC4 should take up this issue, since Data Category repositories with concept definitions and relation repositories are mutually dependent on each other to form exploitable knowledge bases. Due to the many contributions from projects, institutions and even individuals that will disagree with proposed definitions and relations we will need an efficient infrastructure for discovering and combining useful knowledge components. null</Paragraph>
  </Section>
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