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Hydra Tech Call 2015-09-16

Hydra Tech Call 2015-09-16

Jun 16, 2017

Time: 9:00am PDT / Noon EDT

Call-In Info: 1-641-715-3660, access code 651025

Moderator: Carolyn Cole

Notetaker: Nikitas Tampakis 

Attendees:

  • Carolyn Cole (Penn State)

  • Nikitas Tampakis (Princeton)

  • Lakeisha Robinson (Yale)

  • Anna Headley (Chemical Heritage Foundation)

  • Colin Gross (UMich)

  • Lynette Rayle (Cornell)

  • Corey Harper (NYU)

  • Steven Ng (Temple)

  • Justin Coyne (Data Curation Experts)

  • Mike Giarlo (Penn State)

  • Trey Terrell (Princeton)

  • Drew Myers (WGBH)

Agenda:

  1. Call for agenda items

    1. Derivatives - current examples for generating derivatives: https://gist.github.com/elrayle/9a72ffc0c879927b327b

      1. a la carte API - Lynette to make tickets hydra-works and hydra-derivatives to make full-text extraction a configurable derivative in hydra-derivatives.

        1. Currently full-text extraction isn't in Derivatives, it's in hydra-works (recently pulled down from curation concerns)

        2. Characterization currently encapsulates full-text extraction - suggested to move full-text out of characterization and into derivatives to specify which formats should have the full text extraction service run on it.

        3. When using the Hydra Works PersistOutputFile service (https://github.com/projecthydra-labs/hydra-works/blob/master/lib/hydra/works/services/generic_file/persist_derivative.rb) defining a custom makes_derivatives proc currently appends to the set of derivatives defined in hydra-works: https://github.com/projecthydra-labs/hydra-works/blob/master/lib/hydra/works/models/concerns/generic_file/derivatives.rb#L12-L22. It was suggested to have the custom derivatives override the defaults.

      2. side-loading and derivatives - Discuss in next -tech call

        1. Nathan Rogers not on the call. He expressed interest in minimizing calls to Fedora when batch ingesting files.

        2. Note: calling create_derivatives isn't required to create the derivatives.

    2. Dive in to Hydra PCDM - review https://github.com/projecthydra-labs/hydra-pcdm/wiki/Dive-into-Hydra-PCDM

    3. Characterization - Colin to continue working on moving characterization from curation concerns into hydra-works. Follow-up discussion to continue on hydra-tech e-mail.

      1. E-mail thread: https://groups.google.com/forum/#!topic/hydra-tech/KWH-bUo1F3s

      2. Should the generic file model in curation concerns include all characterization properites? Or should different formats be included a la carte? Consensus seemed to be to include a top-level characterization base class, and then allow behaviors for specific formats to be included in addition to the base.

  2. Next call

    1. Date: September 30, 2015 (skipping 9/23 due to HydraConnect)

    2. Moderator: Justin Coyne

    3. Notetaker: Colin Gross