Material and Type are smushed together

[workergnome]

(Separated out from #26)

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From @VladimirAlexiev:

http://data.americanartcollaborative.org/page/wam/material/illustrations
http://data.americanartcollaborative.org/page/wam/material/tumblersdrinkingglasses
A work can hardly be made of illustrations or drinking glasses, so maybe these values should be in "object type" not in "material".
(I did see once a record for a modern art installation made of 2000 lightbulbs, but the above is not such case).

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From @kateblanch:

2. We provided two types of "physical description terms" - AAT Materials and AAT Object Name.
   The term "tumblers (drinking glasses)" is used on 2 objects, and given the right type in the source data as "AAT Object Name". @bsnikhila - were both types, AAT Materials and AAT Object Name mapped accordingly? It looks like they were combined into e57_Material.
   Here is how the source data appears for object 33060:

  </ObjRecord>
  <ObjRecord>
    <ObjUnderJurisOf>The Walters Art Museum, Baltimore, Maryland, http://thewalters.org</ObjUnderJurisOf>
    <ObjectID>33060</ObjectID>
    <DataDateStamp>2016-04-26T13:10:25.753</DataDateStamp>
    <ObjectNumber>47.368</ObjectNumber>
    <ResourceURL>http://art.thewalters.org/detail/33060</ResourceURL>
    <Classification>Objects: Minerals &amp; Inorganics</Classification>
    <SubClassification>Cut &amp; Other Glasswares</SubClassification>
    <CurrentLocation>Centre Street: Fourth Floor: Lobby</CurrentLocation>
    <Provenance>Purchased by William T. Walters, Baltimore; inherited by Henry Walters 1894; by bequest to Walters Art Museum, 1931.</Provenance>
    <CreditLine>Acquired by William T. Walters</CreditLine>
    <PublicDescription>One of a group of six glasses, each of a different style, selected from a set formerly used by William T. Walters.</PublicDescription>
    <Inscription>[Monogram] WTW</Inscription>
    <Dated>after 1861</Dated>
    <DateBegin>1861</DateBegin>
    <DateEnd>1890</DateEnd>
    **<PhysicalDescription>
      <Medium>glass</Medium>
      <PhysicalDescriptionTerms>
        <ThesXRefID>776188</ThesXRefID>
        <ThesXrefType>AAT Materials</ThesXrefType>
        <Term>glass</Term>
        <SourceTermID>300010797</SourceTermID>
        <PhysDescAuthority>Getty AAT, http://www.getty.edu/research/tools/vocabularies/aat/index.html</PhysDescAuthority>
      </PhysicalDescriptionTerms>
      <PhysicalDescriptionTerms>
        <ThesXRefID>819336</ThesXRefID>
        <ThesXrefType>AAT Object Name</ThesXrefType>
        <Term>tumblers (drinking glasses)</Term>
        <SourceTermID>300043257</SourceTermID>
        <PhysDescAuthority>Getty AAT, http://www.getty.edu/research/tools/vocabularies/aat/index.html</PhysDescAuthority>
      </PhysicalDescriptionTerms>
    </PhysicalDescription>**
  </ObjRecord>

[willhays]

This as well. Let me know if there's anything I can contribute to help resolve this before the deadline.

Thanks,
W

[VladimirAlexiev]

Test example:
http://data.americanartcollaborative.org/page/wam/object/33060 crm:P2_has_type

• http://vocab.getty.edu/aat/300010797 glass: WRONG
• http://vocab.getty.edu/aat/300043257 tumbler: CORRECT

http://data.americanartcollaborative.org/page/wam/object/33060/classification crm:P42_assigned

• http://vocab.getty.edu/aat/300010797 glass: WRONG
• http://vocab.getty.edu/aat/300043257 tumbler: CORRECT

The object already has crm:P45_consists_of wam:material/glass,
which is declared skos:broadMatch http://vocab.getty.edu/aat/300010797.
In this case there's no benefit to emit two materials that are the same (and in fact the match is exactMatch not broadMatch).

@kateblanch Does WAM have materials that are not exactly matched to AAT?

[kateblanch]

WAM data includes the element Physical Description Terms. The child elements ThesXrefType and Term are exact AAT matches, with the AAT ID stored in SourceTermID.

I think some filtering needs to be done on which Terms get mapped to which entities based on the ThesXrefType value.

Several values exist for ThesXrefType:
AAT Support/Ground/Base --> appropriate mapping to P45_consists_of

AAT Materials --> appropriate mapping to P45_consists_of / not good for P4 and P2

AAT Object Name --> appropriate mapping to P4_assigned and P2_has_type / not good for P45

AAT Color --> appropriate mapping to P4_assigned and P2_has_type / not good for P45

AAT Technique --> not sure about mapping this, needs more research

[VladimirAlexiev]

• if I remember correctly, AAC maps Support/Ground/Base to "MMO has part - consists of - Material"
• Technique maps to Production - P32_used_general_technique but I don't know if it's in the AAC mapping

[kateblanch]

@bsnikhila - checking in on this issue, is it possible to add a ThesXrefType value condition to the mappings for P45, P4, P2?
P45 = AAT Support/Ground/Base + AAT Materials
P4 + P2 = AAT Object Name

Or, let me know if this is confusing or impossible :)!

[bsnikhila]

AAT Support/Ground/Base and AAT Materials are mapped to Medium (P45). AAT Object Name and AAT Color are mapped to Object Type (P41 and P2). AAT Technique is mapped to Technique (P32). Please let me know if this is right.

[willhays]

I'm not sure if Has Type and Classified are the right properties to use for AAT Color. It seems to not quite fit, but it also might be way over my head! Though, I can't find an example in the target model or a better property to use. Have other institutions run across this in their data sets?

Also, I can only find one AAT Color ThesXrefType in our WAM data, so it is sort of a moot point, unless there are lots of other instances.

Materials, Support/Ground/Base, Object Name, and Technique sound good to me.

[bsnikhila]

I don't think we have mapped Color in any other museum.