2017-01-26—FileSets WG Meeting

January 26, 2017, 2pm EDT

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

Moderator: scossu

Notetaker: Andrew Myers

• scossu

• Andrew Myers

• Jennifer Lindner

• Adam Wead

• Esmé Cowles

• Elizabeth Post

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

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

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)