Hello,

 

I think it is absolutely useful and appreciate the simplicity of the implementation.

 

Best!

Amy

 

Amy J. Barton, MLS

Assistant Professor of Library Science, Metadata Specialist

Purdue University Libraries, Digital Programs

(765) 494-6333

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STEW, 279

 

 

 

From: PREMIS Implementors Group Forum [mailto:[log in to unmask]] On Behalf Of Sébastien Peyrard
Sent: Wednesday, December 18, 2013 11:43 AM
To: [log in to unmask]
Subject: [PIG] Proposal for declaring controlled vocabularies in PREMIS

 


Dear PREMIS Implementers,

The PREMIS Editorial Committee is considering an evolution of the XML schema in the next version of PREMIS that would give the ability to declare explicitly, in a PREMIS description, the controlled vocabulary used for a particular controlled value.


This requirement emerged from the latest PREMIS Implementation Fair at iPRES2013 in September, especially for organizations that would like to declare specific controlled vocabularies in PREMIS that could specialize the generic id.loc.gov suggested values and that could be managed at a regional or local level.

The PREMIS Editorial Committee has considered this need and is making the following proposal to address it.


At Data Dictionary level, the requirement "value should be taken from a controlled vocabulary" is considered sufficient ; therefore, the particular mechanism for declaring a particular vocabulary relies on the serialization of the data dictionary, in the XML schema but also in the PREMIS ontology.
This proposal is therefore focused on the XML Schema evolution.

We think such a mechanism used in XML could be inspired from MODS and be the following :
For any controlled vocabulary-driven semantic unit, the corresponding XML element would have the following attributes:
      * authority: the name of the controlled vocabulary as character string (useful if you do not have a URI for the controlled vocabulary, or do not want to assign one in the XML description)
      * authorityURI: the URI of the whole controlled vocabulary.
      * valueURI: the URI for the controlled value.
The controlled value as a character string would remain the value of the corresponding XML element.

This can be illustrated by the following example for a controlled value given for eventType. Note that, for illustration sake, we use an id.loc.gov controlled value, which is recommended whenever applicable, but that the same framework can be used for declaring local or regional controlled vocabularies.


<
event>
      <eventIdentifier>
              <eventIdentifierType>LocalRepository</eventIdentifierType>
              <eventIdentifierValue>E002.2</eventIdentifierValue>
      </eventIdentifier>
      <
eventTypeauthority="premisEventType" authorityURI="
http://id.loc.gov/vocabulary/preservation/eventType"valueURI="http://id.loc.gov/vocabulary/preservation/eventType/mig">migration</eventType>
       <eventDateTime>2007-06-06T00:00:00.006</eventDateTime>
      <eventDetail>Adobe Photoshop</eventDetail>
      <eventOutcomeInformation>
              <eventOutcome>successful</eventOutcome>
      </eventOutcomeInformation>
      <linkingAgentIdentifier>
              <linkingAgentIdentifierType>AgentID</linkingAgentIdentifierType>
              <linkingAgentIdentifierValue>na12345</linkingAgentIdentifierValue>
      </linkingAgentIdentifier>
      <linkingObjectIdentifier>
              <linkingObjectIdentifierType>hdl</linkingObjectIdentifierType>
              <linkingObjectIdentifierValue>loc.music/gottlieb.09602</linkingObjectIdentifierValue>
      </linkingObjectIdentifier>
</
event>

Note that all those attributes would be optional, and that, if you strip off the attributes, this is a PREMIS 2 record.
In other terms, you can discard this new feature if you do not want to implement it.


We would like to know, as implementers, if,  you think this feature is useful, and if you have suggestions or comments about it.


Kind regards,
On behalf of the Committee,


Sébastien


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