Technological: Built under the technological constraints of a different time



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Technological: Built under the technological constraints of a different time

  • Technological: Built under the technological constraints of a different time

    • Data storage was very, very expensive
    • Data was stored on tapes that had to be read sequentially
  • Functional: Built for a different purpose

    • Designed to print cards not for computerized searching or to supply machine-actionable data


Tools to work with MARC

  • Tools to work with MARC

    • MARCXML
  • Arcane numbering, labeling scheme

    • Crosswalk to labels?
    • Still have to understand meaning and context
    • However, the procrustean limits of field numbers and tags limits the flexibility and expandability of MARC


A couple examples in the context of RDA’s aims

  • A couple examples in the context of RDA’s aims



Intended to be atomistic and independent of storage and display

  • Intended to be atomistic and independent of storage and display

  • Many have controlled vocabulary lists

  • Intended to be used by humans and computers

    • Machine-actionable data is ultimately for the good of people


Example from OLAC experiment:

  • Example from OLAC experiment:

  • Can we teach a computer to identify widescreen and full screen videos?



Full screen

  • Full screen

  • Fullscreen

  • Full-frame

  • Standard format

  • Widescreen

  • Wide screen

  • Letterboxed



250 Edition statement

  • 250 Edition statement

  • 538 System requirements note

  • 500 Physical description note

  • 505 Contents note (when disc has both versions)

  • 440/830 Series (widescreen)

  • Where the computer stumbles:

    • 500 General note: Special features … widescreen to fullscreen comparison


300 $a 1 computer optical disc : $b sd., col. ; $c 4 3/4 in.

  • 300 $a 1 computer optical disc : $b sd., col. ; $c 4 3/4 in.

  • 300 $a 1 CD-ROM : $b sound, color ; $c 12 cm



Transcribed information

  • Transcribed information

      • IMDb example: Laurence Fishburne (as Larry Fishburne)
  • Stuff that can’t be controlled data, such as summaries and contents note

  • Explanatory notes for controlled data

    • Stuff that doesn’t quite fit: square pegs, penguins, and ostriches


Not easy to represent in a machine-actionable way

  • Not easy to represent in a machine-actionable way



$w in 7xx linking fields is for the control number of the related record

  • $w in 7xx linking fields is for the control number of the related record

  • $0 in controlled fields

      • 100 $a Bach, Johann Sebastian. $4 aut
      • $0 (DE-101c)310008891
    • Isn’t clear how it would work if you want to control two elements in one field
  • Yet another discussion paper at MARBI on Works and Expression in MARC



Humpty Dumpty problem:

  • Humpty Dumpty problem:

  • $8 linking subfield

    • not widely implemented or used


511 Cyrus Stevens, violin (1st work) ; Pamela Dellal, mezzo-soprano (2nd work)…

  • 511 Cyrus Stevens, violin (1st work) ; Pamela Dellal, mezzo-soprano (2nd work)…

  • 518 The 1st and 3rd works recorded at the Sonic Temple, Roslindale, MA, Dec. 5 and 14, 2001, respectively…

  • 505 Sonata for violin and piano (17:54) -- A packet for Susan (19:59)…

  • 650 Sonatas (Violin and piano)

  • 650 Songs (High voice) with piano…

  • 700 Boykan, Martin. Sonatas, violin, piano.

  • 700 Boykan, Martin. Packet for Susan…



Why do we want atomistic, machine-actionable data and machine-interpretable relationships?

  • Why do we want atomistic, machine-actionable data and machine-interpretable relationships?

  • OLAC prototype as a possibility











Challenges for development

  • Challenges for development

  • With what $?

  • Who?





Jason Thomale’s “Interpreting MARC: Where’s the Bibliographic Data?”

  • Jason Thomale’s “Interpreting MARC: Where’s the Bibliographic Data?”

  • http://journal.code4lib.org/articles/3832

  • OLAC’s experiment with extracting data from MARC:

  • Code4Lib Journal: http://journal.code4lib.org/articles/775

  • OLAC report:

  • http://www.olacinc.org/drupal/capc_files/archived_docs/MIW_4.pdf

  • (task force web page: http://www.olacinc.org/drupal/?q=node/27)

  • MARBI discussion papers

  • Controlled Lists of Terms for Carrier Attributes:

    • http://www.loc.gov/marc/marbi/2011/2011-dp04.html
  • Identifying Work, Expression, and Manifestation records:

  • http://www.loc.gov/marc/marbi/2011/2011-dp03.html

  • OLAC prototype discovery interface:

    • http://blazing-sunset-24.heroku.com/



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