Maintaining MeSH in the Shared Voyager Database
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04/19/23 1
Maintaining MeSH in the Shared Voyager Database
Małgorzata Fort, Ph.D.Health Sciences Library SystemUniversity of Pittsburgh
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04/19/23 2
Health Sciences Library System and MeSH Description of our Voyager
environment History of MeSH loads Full load Partial load Plans for ongoing maintenance
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04/19/23 3
Layout of the battle field
Shared database, different interests
Centralized administration, split authority control
In the shade of a “Big Brother”
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04/19/23 4
A very brief history of MeSH loads Pre-Voyager era MeSH 1999 (full) MeSH 2000 (updates) MeSH 2001 skipped MeSH 2002 (full)* MeSH 2003 (updates)*
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04/19/23 5
MeSH 2002 load
Full MeSH file via slam load considerations: No effort versus no cost Fast but “lame” Full but no benchmark file No deletes
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04/19/23 6
MeSH 2002 load (cont’d)
Full MeSH file via slam load decisions: Do it, it’s better than none Use NLM web list of deleted
records Take advantage of Voyager
reports Use GHC feature
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04/19/23 7
Global Headings Change
Forcing headings to GCQ making changes in the authority
record Creating “dummy” authority
records Working around problems
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04/19/23 8
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04/19/23 9
Global Headings Change
Forcing headings to GCQ making changes in the authority
record Creating “dummy” authority
records Working around problems
Identical MeSH and LC headings Run-time error ‘5’
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04/19/23 10
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04/19/23 11
Retrospective cleanup
Unauthorized Headings Report Bring MeSH structure up-to-date Implement NLM application of
MeSH for catalogers MARC 21
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04/19/23 12
MeSH old structure
650 _2 Cost Control $x methods $v congresses
650 _2 Cost Control $z United States $x legislation $v congresses
650 _2 Delivery of Health Care $x economics $z United States $v congresses
650 _2 Health Policy $z United States $x congresses
650 _2 Reimbursement Mechanisms $x congresses
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04/19/23 13
MeSH new structure
650 _2 Cost Control $x methods 650 _2 Cost Control 650 _2 Delivery of Health Care $x economics 650 _2 Health Policy 650 _2 Reimbursement Mechanisms 651 _2 United States 655 _2 Congresses 655 _2 Legislation
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04/19/23 14
MeSH 2003 load
Updates only Blessings of GCQ Useless useful reports
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04/19/23 15
Plans and challenges
Unauthorized Subject Headings again!
Compromise, but clean it all Genre headings –are we ready for
them?