Subdivided LCSH headings should be flipped by Preferred Term Correction
Preferred Term Correction is not flipping all LCSH headings when the authority record changes. If there is an authority record that has a subdivision, it is only flipped by PTC if the heading in the bib has no additional subdivisions. This means there is a significant gap in the PTC process that requires manual attention and handling, which is unsustainable. The PTC process needs to be more thorough.
For example, this LCSH:
$a Germany $x Politics and government $y 19th century
was updated by LC to be:
$a Germany $x Politics and government $y 1789-1900
When the authority record changed, bib headings that had the original $a $x $y (only) were flipped by PTC to have the new $y. But any headings that had additional subdivisions were not flipped.
For example, this bib heading was flipped to the new form:
BEFORE: $a Germany $x Politics and government $y 19th century
AFTER: $a Germany $x Politics and government $y 1789-1900
But this bib heading was NOT flipped:
$a Germany $x Politics and government $y 19th century $v Congresses.
More example of headings that were not flipped but should have been flipped:
651 0 $a Germany $x Politics and government $y 19th century $v Caricatures and cartoons.
651 0 $a Germany $x Politics and government $y 19th century $v Congresses.
651 0 $a Germany $x Politics and government $y 19th century $v Exhibitions.
651 0 $a Germany $x Politics and government $y 19th century $x In literature.
651 0 $a Germany $x Politics and government $y 19th century $v Periodicals.
651 0 $a Germany $x Politics and government $y 19th century $v Poetry.
Impact of Problem: The fact that PTC does not flip these headings means that staff have to manually correct hundreds or thousands of headings. The PTC process is lacking and is not performing its function of managing authority control automatically.
Corinna Baksik
shared this idea
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Karla Jurgemeyer commented
This continues to be a major problem in Alma, as LC has been undertaking larger-scale projects to remediate terms like these (all of which will not flip if followed by subdivisions):
650 _0 $a Fugitive slaves $z United States $v Biography.
650 _0 $a Slaves $z United States $v Biography.
650 _0 $a Women slaves $v Fiction. -
Michael Hertig
commented
This behavior would be useful with Rameau headings, too.
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Lynne Billington
commented
Great idea!