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Maintaining MeSH in the Shared Voyager Database. Ma ł gorzata Fort, Ph.D. Health Sciences Library System University of Pittsburgh. 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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Maintaining MeSH in the Shared Voyager Database Małgorzata Fort, Ph.D. Health Sciences Library System University of Pittsburgh
Health Sciences Library System and MeSH • Description of our Voyager environment • History of MeSH loads • Full load • Partial load • Plans for ongoing maintenance
Layout of the battle field • Shared database, different interests • Centralized administration, split authority control • In the shade of a “Big Brother”
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)*
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
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
Global Headings Change • Forcing headings to GCQ • making changes in the authority record • Creating “dummy” authority records • Working around problems
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’
Retrospective cleanup • Unauthorized Headings Report • Bring MeSH structure up-to-date • Implement NLM application of MeSH for catalogers • MARC 21
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
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
MeSH 2003 load • Updates only • Blessings of GCQ • Useless useful reports
Plans and challenges • Unauthorized Subject Headings again! • Compromise, but clean it all • Genre headings –are we ready for them?