Mapmakers

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Slides prepared for a session at ALA Midwinter 2014 for the ALCTS CaMMS Cataloging & Classification Research Interest Group.

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  • Discuss ‘safe transforms’ as one example of smartening up.Do we need some examples of these?
  • Example of quantitative purposes: X number of unevaluated maps agree with a particular assertion of relationship.More examples? Pictures?
  • Mapmakers

    1. 1. Mapmakers ALCTS CaMMS Cataloging & Classification Research Interest Group, ALA Midwinter 2014
    2. 2. Mapping: what we mean • Semantic mapping is not crosswalking: – Crosswalks express one relationship: ‘equivalentTo’ – Maps can express a variety of relationships for more nuanced results • Maps are more granular than crosswalks: – Crosswalks are schema-to-schema – Maps express relationships between individual properties or classes, regardless of schema
    3. 3. No more ‘perfect’ map • There is not one ‘standard’ map; each user can create/maintain his own, or multiples – Under this model, maps can serve special purposes or distinct communities, and be shareable with others • Definitions are critically important—good mapping connections can even be made on a ‘close enough’ basis, using something like skos:closeMatch – In crosswalks, ‘close enough’ is often actually expressed as ‘equivalent’
    4. 4. dct:format dc:format dct:extent unim:U215__a m21:M300 rdam:extent rdau:duration rdau:extent m21:M306__a rdam:extentOfText rdau:extentOfText rdae:duration isbd:”has extent” bibo:numVolumes bibo:numPages unim:U127__a
    5. 5. A [more] Technical View Subject Predicate Object dct:Extent subPropertyOf dc:Format rdau:Extent subPropertyOf dc:Format dct:Extent equivalentTo rda:Extent isbd:hasExtent subPropertyOf rdau:Extent rdam:extent subPropertyOf rdau:extent rdau:extentOfText subPropertyOf rdau:extent rdam:extentOfText subPropertyOf rdau:extentOfText rdam:extentOfText subPropertyOf rdam:extent bibo:numPages m21:M300 subPropertyOf subPropertyOf rdau:extentOfText rdau:extent
    6. 6. Who Sez? Subject Predicate Object dct:Extent subPropertyOf dc:Format rdau:Extent subPropertyOf dc:Format isbd:hasExtent subPropertyOf rdau:Extent rdam:extent subPropertyOf rdau:extent rdau:extentOfText subPropertyOf rdau:extent rdam:extentOfText subPropertyOf rdau:extentOfText rdam:extentOfText subPropertyOf rdam:extent bibo:numPages m21:M300 subPropertyOf subPropertyOf rdau:extentOfText rdau:extent Blue indicates that the relationship is part of the standard vocabulary declaration
    7. 7. Who Sez? Subject Predicate Object dct:Extent subPropertyOf dc:Format rdau:Extent subPropertyOf dc:Format isbd:hasExtent subPropertyOf rdau:Extent rdam:extent subPropertyOf rdau:extent rdau:extentOfText subPropertyOf rdau:extent rdam:extentOfText subPropertyOf rdau:extentOfText rdam:extentOfText subPropertyOf rdam:extent bibo:numPages m21:M300 subPropertyOf subPropertyOf rdau:extentOfText rdau:extent Asserted by Gordon Asserted by Diane
    8. 8. How Can We Use This? • Relationships that come with the schema can be used by anyone: – Originating institution or individual • As original, relatively complex data used internally • As ‘dumbed-down’ version of the richer data • As defined by AP or local understanding of specific needs – Receiving institution or individual • As presented by originating institution • As ‘smartened-up’ data, defined by AP or understanding of original data • As ‘mapped’ data in schema or language more locally useful
    9. 9. How Can We Use This? • Relationships that are external to the schema (asserted by map attributed to others) can be used selectively: – From trusted institution, group or individual • Based on AP built by known institution or group • Based on knowledge of the mapmaker – From unknown institution, group or individual • Based on evaluation over time of the quality of the map • Based on understanding that a map from unknown sources can be used for quantitative purposes
    10. 10. Contact Information Diane Hillmann metadata.maven@gmail.com Gordon Dunsire gordon@gordondunsire.com Jon Phipps jonphipps@gmail.com The First MetadataMobile
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