2017-01-26—FileSets WG Meeting

Date and Time

January 26, 2017, 2pm EDT

Connection Information

Google Hangouts:  https://hangouts.google.com/hangouts/_/artic.edu/pcdm-filesets

Moderator: scossu

Notetaker: Andrew Myers

Attendees

• scossu
• Andrew Myers
• Jennifer Lindner
• Adam Wead
• Esmé Cowles
• Elizabeth Post

Agenda

1. Notetaker?
2. Review last week's action items (see below)
3. Review implementation work done so far
4. Review ingest workflow diagram
5. How should a use term config file look? 
6. Validation: duplicate uses in a FileSet, Files with no use

Minutes

Takeaways:

• How to configure pcdm:use options?
  • We can use quesitoning_authority gem.
• Should we validate cardinality for pcdm:use
  • Validating "required" would be much easier than validating cardinality. So let's start with that.
• How opinionated should code be about what goes into a FileSet?
  • Not too much.
  • Ideally, we should encourage implementers to consider a FileSet as a logical unit containing files that are derived from one another.
  • A typical scenario would be a FileSet containing one "orginal file", with multiple other files derived from it.
  • We want to steer people away from combining Files into FileSets where the Files are not derivatives of each other.
  • Instead, we would encourage creating separate works, and then grouping those works together through a common association to another "parent" work.
  • This assumes a feature of being able to "nest" works, which doesn't fully exist yet.
  • However, there are use cases that introduce some gray area here.
  • For instance, media files that have transcripts, i.e. are the transcripts actually derivatives?
  • In these in-between cases, we prefer to not be too prescriptive, and allow implementers to choose the model that best suits their needs.
• Consider putting diagrams for data modeling use cases on the PCDM wiki.
• PCDM Use Validator in Hydra-Works.
  • This is just a sketch (in Ruby) I drew up after the meeting, of what one might look like.
  • Similar to Hydra PCDM Validators like these: http://www.rubydoc.info/gems/hydra-pcdm/0.9.0/Hydra/PCDM/Validators

Previous Action Items

• Esmé Cowles: add a comment to https://github.com/projecthydra-labs/hydra_file_sets_wg/issues/5 outlining some of the examples we have discussed for richer metadata attached to a FileSet.
• scossu: draft a use case for multiple Files with the same use value, or no use value, attached to a FileSet. (see Re: 2017-01-05—FileSets WG Meeting) 
  

Action Items

• Drew - demonstrate progress on metadata-as-files branch of Hyrax
  
• Stefano - demonstrate using QA to provide options for pcdm:use