Schemas and Schema-driven Metadata Software

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Schemas and Schema-driven Metadata Software

  1. 1. Schemas and Schema-driven Metadata Software <ul><ul><li>Dr Stephen Crawley, eResearch Group, ITEE </li></ul></ul><ul><ul><li>University of Queensland </li></ul></ul>
  2. 2. What should be in a Schema? <ul><li>Element names, labels, descriptions </li></ul><ul><li>Element values: types / patterns / value sets </li></ul><ul><li>Structures: flat / tree / graph, cardinality, etc </li></ul><ul><li>Complex constraints </li></ul><ul><li>Relationships with other schemas: inheritance, subtyping, composition, etc </li></ul><ul><li>Semantics: relationships with ontologies. </li></ul><ul><li>Schema versioning ... </li></ul>
  3. 3. Scope for Schema-driven Apps <ul><li>Metadata entry and display </li></ul><ul><li>Validation of metadata </li></ul><ul><li>Mapping between metadata representations: </li></ul><ul><ul><li>XML vs RDF vs <meta> vs ... </li></ul></ul><ul><ul><li>need representation independent schemas </li></ul></ul><ul><li>Metadata conversion / schema versions </li></ul><ul><li>Extracting / harvesting metadata from other sources </li></ul>
  4. 4. Recent eResearch Group Tools <ul><li>ARCHER metadata tools: </li></ul><ul><ul><li>MDE: a schema driven (XML) metadata editor </li></ul></ul><ul><ul><li>MSF: tools for defining metadata schemas </li></ul></ul><ul><ul><li>MDSR: simple metadata schema repository </li></ul></ul><ul><li>Pronto ontology repository </li></ul><ul><li>DIAS-B tools: </li></ul><ul><ul><li>Danno annotation repository (annotea + ...) ‏ </li></ul></ul><ul><ul><li>Dannotate annotation tool </li></ul></ul><ul><li>LORE annotation tool. </li></ul><ul><li>SourceForge project: “metadata-net” </li></ul>
  5. 5. Future Work <ul><li>Schema-driven annotation tools </li></ul><ul><li>Annotation of objects (vs web pages) </li></ul><ul><li>Annotation of images, maps, etc </li></ul><ul><li>Integrate MDE/MSF and Danno/Dannotate </li></ul><ul><li>Support for more schema types in Pronto </li></ul><ul><li>Stand-alone editing, repository components </li></ul><ul><li>Completing the Annotea specification </li></ul><ul><li>Annotation schema work </li></ul>

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