the deathflip project: killing off your authors practically painlessly michael kreyche, systems...
TRANSCRIPT
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The DeathFlip Project:Killing Off Your Authors Practically Painlessly
Michael Kreyche, Systems LibrarianAmey Park, Database Maintenance Librarian
Kent State UniversityMay18-20, 2009
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Summary
At a Glance
LC Policy Change—Adding Death Dates
Record Maintenance Nightmare
Brainstorming for Solutions
"DeathFlip" Authority Records
Mostly Automated Procedures
Record Creation
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The Short Version:
library.kent.edu/deathflip
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Typical DeathFlip Record
00239nz 2200097n 4500
008 080125n| acannaab |n aaa ¶
100 1 ‡a Burns, George, ‡d 1896-1996¶
400 1 ‡a Burns, George, ‡d 1896-¶
667 ‡a DeathFlip¶
670 ‡a 20060201¶
910 ‡a n 79065048 ¶
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The General Idea
1. Load all the DeathFlip records. Twice.
2. Wait for AACP to run overnight
3. Check your “Updated bibliographic headings” report.
4. Gloat.
5. Check your “Near matches” report.
6. Do a little cleanup.
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FAQ
How many DF records do you have?– 18,358 so far.
Did you say load them TWICE? – Yes, once as names and once as subjects.
Should I load them all?– Yes.
Won’t I get a lot of blind references reported?– Yes. But it’s OK.
Won’t I get a lot of duplicates reported?– Yes. But it’s OK. Really.
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Interesting equation: b + d = tDF
If:– Your authority file is up to date and– You load a DeathFlip file
The following equation holds true for your reports:Blind references + Duplicate records
= Total DeathFlip records in file
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20 Year Old LC Policy
“Don't add dates to existing headings”
Criticized by members of the library community, especially when headings– are for famous dead people and – include a birth date but lack a death date
Examples:• 100 1# $a Warhol, Andy, $d 1928-• 100 1# $a Dali, Salvador, $d 1904-• 100 1# $a Nixon, Richard M. $q (Richard Milhous),$d 1913-• 100 0# $a Diana, $c Princess of Wales, $d 1961-• 100 0# $a John Paul $b II, $c Pope, $d 1920-
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Death Dates Chronology
June 2005: LC Proposal
September 2005: LC Decisions
Fall 2005: LCRI 22.17 revision
2006: Big LC project to add death dates to "selected" headings
2007: KSU finds a solution
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LC's Proposed Change, 2005
“Allow the optional addition of dates (birth, death or both) to existing personal name headings at will.... Catalogers would not be required to add dates to existing personal name headings (other than to resolve conflicts) but may exercise judgment and add the date or dates if these are judged to be useful.”
Comments?
http://www.loc.gov/catdir/cpso/pndatesorig.html
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Comments
93 “yes” comments: wholeheartedly supporting the proposal as posted
28 “partial yes” comments: ... not the addition of dates “at will” ... reduce the initial impact of BFM*
12 “non-voting” comments
6 “no” comments: totally disapproved ... generally cited the impact of BFM*
* Bibliographic File Maintenance
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A Few Specific Comments
Provide notification lists of the names changed in order to expedite BFM in local catalogs
Retain former heading in a 400 field to expedite BFM or machine “flipping” in some local systems
Use “b.” for all beginning dates, thus eliminating open dates altogether
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LC's Key Decisions
Allow the optional addition of death dates to established headings that contain birth dates only
Investigate the development of a notification service for changed headings
Investigate changes to the MARC 21 authority format for coding “former headings” in a discrete MARC tag
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OCLC Feed and Archive
http://www.oclc.org/rss/feeds/authorityrecords/default.htm
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MARC Revision Chronology
December, 2006: proposal published(http://www.loc.gov/marc/marbi/2007/2007-02.html)
January 2007: amended/approved by MARC Advisory Committee
May 2007: approved by LC/LAC/BL
October 2007: MARC21 Authorities Update 8
Proposal No. 2007-02"Incorporating invalid former headings in 4XX
fields of the MARC 21 Authority Format"
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MARC21 Authorities Update 8
Two Changes– Added code "h" for 4xx $w, byte 1 (No
reference structures): Indicates that the reference is not valid in any reference structure [i.e. name/subject/series].
– Expanded usage of 4xx $i:When subfield $w/1 contains code h (No reference structures), subfield $i may contain the date that a heading became invalid.
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18Suppressing Display of “Flip” 4xx FieldsExisting coding (seems good enough to me):
100 1 ‡a Burns, George, ‡d 1896-1996¶
400 1 ‡wnnea ‡a Burns, George, ‡d 1896-¶
New coding:
100 1 ‡a Burns, George, ‡d 1896-1996¶400 1 ‡wnhe ‡a Burns, George, ‡d 1896-¶
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For the Time Being:
No LC 4xx for “Former Headings”
AACP can't flip the bib headings automatically.
Each new death date requires global changes or manual correction
Very unhappy authority control librarian!
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Workflow Implications
Records from Vendor:– updated authority record only• heading shows up on blind reference list• use global update when more than a few
records• manual editing for onesies/twosies
– with a "current" bib record• older bibliographic records not reported—
split file!!!• check all headings on the Death Date list?
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Vendor Option (Backstage)
Developed for Wofford College– Supply brief records to flip headings– Supply full records to replace brief ones– 72% increase in cost over existing service
Can we do it ourselves?
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DeathFlip Plan A
Create DF records from OCLC feed
Load DF records with custom table– Match existing records– Add identifying field
Output a copy of matched records
Overlay matched records with DF records
Wait overnight for AACP
Overlay DF with original records
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Thinking the Unthinkable
What if:
We loaded all the DeathFlip records– Even if it meant two records per heading– Even if we didn’t have bib headings
Would AACP work?
Yes!
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DeathFlip Plan B
Create DF records from OCLC feed
Load All DF records– Some will "duplicate" real records– Some will report as blind references
Wait overnight for AACP
Suppress/Delete DF records
Repeat as needed
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Typical Basic Workflow
Day 1– Clear headings reports– Load DeathFlip records
Day 2– Generate reports– Suppress or delete records– Clear reports (wait till next day if
suppressed)
Names/Subjects can be done separately
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26Last Quarterly Loads (March 2009)
Subjects
Names
All
Records loaded 1,115 1,115
Fields updated 247 3,497 3,744
Bib records updated
133 2,493 2,626
Headings 24 333 577
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Timing
Load DF before vendor records– Flips retro records and the newly returned
records. – Report when loading bslw shows lots of
duplicate records, but can pretty much ignore or scan quickly. Blinds worth looking at.
Otherwise:– New records with a death date report as
blind because non-current bib records haven't been flipped yet—have to look at all because some really are legit (especially conference and corporate names).
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28Initial Record Loads—December 2007
Subjects
Names
All
Records loaded 9,949 9,949
Fields updated 461 4,078 4,539
Near matches 617 419 1,036
Headings from February 2006-August 2007
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Testing the equation: b + d = tDF
Subjects
Names
All
tDF (records loaded)
9,949 9,949
b (blind references)
8,280 4,845
d (duplicate records)
1,554 4,965
b + d 9,834 9,810
Missing records 115 139 254
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30Identifying Missing Authority Records
Tentative process:1. Make a list of loaded DF records;
export record number, 910, 1xx subject, 1xx name to text file
2. Make a list from the blind/duplicate report; export record number, 1xx subject, 1xx name to text file
3. Merge and sort text files; identify non-duplicated record numbers
4. Look up in OCLC by LCCN (910)
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Timing for duplicate detection
Duplicate detection works best when your database is more up to date than the DeathFlip records.
If you get records from a vendor, load the DeathFlip records after the vendor records.
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OCLC's RSS Feed
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Processing the Feed—Raw Code
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Step 1: Download Feed
Perl script saves current feed– Covers about the last two months– Older data migrated to HTML archive
Two stages:– Initially, harvested archive– Harvest feed at least every two
months
Character encoding changes over time
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Step 2: Extract Data
Another Perl script– Parses Feed– Produces Tab-Delimited file
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Step 3: Build MARC Record
Yet another Perl script– Fixes delimiters and other characters– Restructures data into MARC
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Occasional Retrospective Flip?
Unsuppress or reload earlier DF records to fix newly loaded bib records
March 2008 (3 months after first load)– 17 fields changed
May 2009 (1½ years after first load):– 122 fields changed for 36 headings
How long is it worthwhile???
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Outcomes
Pluses– Saves a huge amount of work– Can find missing authority records
Minuses– Doesn't catch TOC fields (970)– Doesn't catch headings with $e, $t,
etc.– Sometimes the DF headings get
updated
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Original:– Gimbutas, Marija Alseikaitė,|d1921-
DeathFlip:– Gimbutas, Marija Alseikaitė,|d1921-1994
Latest:– Gimbutas, Marija,|d1921-1994– This heading reported as blind.
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Go For It!
library.kent.edu/deathflip
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Bibliography
Addition of Death Dates to Personal Names. http://www.loc.gov/catdir/cpso/pndates.html. See also:
– http://www.loc.gov/catdir/cpso/pndatesorig.html
– http://www.loc.gov/catdir/cpso/deathdates.pdf
LC Proposal, Addition of Dates to Existing Personal Name Headings. June, 2005. http://www.loc.gov/catdir/cpso/pndatesorig.html
LC Analysis of Comments Received and Corresponding Decisions. September, 2005 http://www.loc.gov/catdir/cpso/deathdates.pdf
Policy on the Implementation of Revised LCRI 22.17, Notice of OCLC RSS Feed for Local Bibliographic File Maintenance. Fall 2005. http://www.loc.gov/catdir/cpso/lcri22_17imp.html
Park,Amey L. Death Dates Added to Some Personal Name Headings. TECHKNOW: A Quarterly Review of Bright Ideas For the Technical Services Division. Ohio Library Council. http://www.library.kent.edu/files/TechKNOW_July_2006.pdf