The aggregator database cornerstone or annex
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Transcript of The aggregator database cornerstone or annex
Aggregators: Cornerstone or Annex?
Beverly GeckleSuzanne Mangrum
Questions/Purpose:
• E-journal collection assessment and collection development project focused on e-journal aggregator content.
• Aggregators have become a standard in the library’s collection, but what have we really purchased?
• Analyze aggregator content by subject and quality.
AggregatorOnline Dictionary for Library and Information Science. http://www.abc-clio.com/ODLIS/odlis_A.aspx
A bibliographic service that provides online access to the digital full-text of periodicals published by different publishers. Because aggregator databases can be very large, tracking their coverage is not an easy task for serials librarians. A task group of the Program for Cooperative Cataloging (PCC) is working on standards for analytic catalog records for serials titles available electronically from aggregator services. Currently, the top two journal aggregators in the United States are EBSCO and ProQuest. Recently, EBSCO has been building market share by offering higher up-front payments to secure exclusivity from the publishers of certain journals. The effects of this competitive practice on libraries and the end-user are as yet unclear.
Chosen Aggregator http://www.ebscohost.com/academic/academic-search-premier
Data Parts
ASP
UlrichsWeb
Quality Full Text
Impact factors
Subjects
Journal Citation Rpts
Data Parts
ASP
UlrichsWeb
Quality Full Text
Impact factors
Subjects
Journal Citation Rpts
ASP – Basic Criteria
ASP
Quality Full Text
First, we were interested in the ASP data that matched our basic criteria for quality:
• Full-Text
• Peer-Reviewed
• PDFs
Data Parts
ASP
UlrichsWeb
Quality Full Text
Impact factors
Subjects
Journal Citation Rpts
Data Parts - UlrichsWeb
UlrichsWeb
Subjects
• Business & Economics
• Social Sciences & Humanities
• Government, Law, & Public Administration
• Education
• Sports, Leisure, & Recreation
We used UlrichsWeb to limit our data to certain subjects. We decided to focus on the Social Sciences. We selected the following subject groups:
Data Parts
ASP
UlrichsWeb
Quality Full Text
Impact factors
Subjects
Journal Citation Rpts
Data Parts
Impact factors
We used Thomson Reuter’s ISI Journal Citation Reports (ISI) to identify the very best journals by impact factor.
We chose multiple subject sets that fell within the broad subject of social science.
Journal Citation Rpts
METHODOLOGY
METHODOLOGYFiltering
Data downloaded
Needed massaging
Filtered each data source to create subsets
Matching
Subject Subsets matched to identify high quality (high impact) titles
The resulting subsets were then matched for coverage
Methodology - Filtering
ASP – Coverage Dates
UlrichsWeb – Subjects in ASP
Journal citation reports – Top 25 of chosen subjects
ASP - Filtering
ISI Top 25
UlrichsWeb
Quality Full Text
Impact factors
Subjects
Further broken out by coverage
Total ASP
PDF images
end date
embargo
to present
Coverage
Used data from ASP spreadsheet to also filter by coverage.
ASP
ASP title list: ASP Full Text Titles that are peer reviewed and available as a PDF
Limited to Full Text titles4768 titles
Marked values using Conditional Formatting in Excel
Then sorted the columns by marked values to filter coverage categories
Full Text & no end date3674 titles
Full Text not embargoed1734 titles
Full Text to Present, PR and PDF 1262 titles
Repeated process for additional categories:
• Titles with an end date (Full Text Stop
• Titles embargoed (Full Text Delay)
Ulrichs
III query against SS MARC records in ILS
Ensure that an end date was truly a coverage limitation we removed ceased titles.
Focus on current titles
ASP Filtered Subsets
Total ASP
PDF images
end date
embargo
to present
UlrichsWeb - Filtering
ISI Top 25
UlrichsWeb
Quality Full Text Impact factors
Subjects
UlrichsWeb – Filtering
We downloaded the filtered subject list from Ulrich’s and used Conditional Formatting to pull out all titles available in Academic Search Premier.
Ulrich’s Business & Economics 1047
EBSCOhost 891
ASP (full text)
104
Journal Reports - Filtering
ISI Top 25
UlrichsWeb
Quality Full Text
Impact factors
Subjects
ISI Journal Citation Reports
ISI Journal Citation Reports
Subject Matching
• Anthropology• Area Studies• Business• Business, Finance• Communication• Criminology &
Penology• Cultural Studies• Demography• Economics• Education &
Education Research• Education, Special• Environmental
Studies• Ergonomics• Ethics• Ethnic Studies• Family Studies• Geography• Gerontology• Health policy &
Services• History• History &
Philosophy of Science
• History of Social Sciences
• Hospitality, Leisure,
Sport & Tourism• Industrial Relations
& Labor• Information Science
& Library Science• International
Relations• Law• Linguistics• Management• Planning &
Development• Political Science• Psychiatry• Psychology, Applied• Psychology,
Biological• Psychology, Clinical• Psychology,
Developmental• Psychology,
Educational• Psychology,
Experimental• Psychology,
Mathematical• Psychology,
Multidisciplinary• Psychology,
Psychoanalysis
• Psychology, Social• Public ,
Environmental & Occupational Health
• Public Administration
• Rehabilitation• Social Issues• Social Sciences,
Biomedical• Social Sciences,
Interdisciplinary• Social Sciences,
Mathematical Sciences
• Social Work• Sociology• Substance Abuse• Transportation• Urban Studies• Women's Studies
• Business & Economics
• Government, Law & Public Administration
• Social Sciences & Humanities
• Education
• Sports, Hobbies, & Recreation
UlrichsWeb – 5 Subjects
ISI Journal Citation Reports – 57 Subjects
ISI Journal Citation Reports
ISI provides the rankings by subject, which was not in our Ulrich’s data
After combining all of the reports, we had over 1200 titles that ranked in the top 25 of our categories
Some titles were listed in more than one subject area, so we deduped the titles but retained all subjects.
Methodology - Matching
Each filtered Ulrich’s subject list was matched with the ISI top 25 spreadsheet
These became our subject lists of high quality titles
Ulrich’s Business & Economics 1047
EBSCOhost 891
ASP (full text)
104
UlrichsWeb – ISICombined ISI Top 25 List
Methodology - Matching
Each subject set was matched to our ASP quality full text list broken out by coverage:
• To present• End date• Embargoed
Subject Lists - Coverage
ASP with end date
ASP to present
ASP Embargoed
RESULTS BY SUBJECT
Results – Social Sciences &
Humanities 149 Social Science titles match top impact factors from ISI
219 Social Science titles in ASP pulled from Ulrich's
421 Social Science titles in UlrichsWeb
157 top Soc Sci titles
To present - 25 of 149 top titles
End date - 17 of 149 top titles
Embargoed - 107 of 149 top titles
Ulrich’s and ISI data filtered by ASP “quality” data
Results – Business27 Business titles match top impact factors from ISI
104 Business titles in ASP pulled from UlrichsWeb
891 Business titles from UlrichsWeb
27 top Business
titles
To present - 7 of 27 top titles
End date - 2 of 27 top titles
Embargoed - 18 of 27 top titles
Ulrich’s and ISI data filtered by ASP “quality” data
Results – Gov’t & Law71 Government & Law titles match top impact factors from ISI
215 Government & Law titles in ASP pulled from Ulrich's
862 Government & Law titles from UlrichsWeb
Ulrich’s and ISI data filtered by ASP “quality” data
71 top Gov't &
Law titles
To present - 18 of 71 top titles
End date - 5 of 71 top titles
Embargoed - 48 of 71 top titles
Results – Education11 Education titles match top impact factors from ISI
114 Education titles in ASP pulled from Ulrich's
329 Education titles in UlrichsWeb
11 top Education titles
To present - 2 of 11 top titles
End date - 6 of 11 top titles
Embargoed - 3 of 11 top titles
Ulrich’s and ISI data filtered by ASP “quality” data
Results – Sports2 Sports & Hobbies titles match top impact factors from ISI
5 Sports & Hobbies titles in ASP pulled from Ulrich's
48 Sports & Hobbies titles in UlrichsWeb
2 top Sportstitles
To present - 0 of 2 top titles
End date - 0 of 2 top titles
Embargoed - 2 of 2 top titles
Ulrich’s and ISI data filtered by ASP “quality” data
Implications for Collection
Development
Discovery vs. Access
Discovery & Cost Implications
Discovery vs. Access
Linked Full Text
Although ASP enabled discovery full text was made available because Library subscribes to the SAGE Premier 2013 package
Discovery vs. Access
Discovery vs. Access
A search in the Journal A-Z List shows that it is embargoed
Discovery vs. Access
Discovery vs. Access
A search in the Journal A-Z List shows that it is embargoed
Discovery & Cost Implications
Results – Subject Perspective
Results – Subject Perspective
Results – Subject Perspective
More questions than answers?
• What is the library really purchasing?
• Indexing, discovery, content.
• Need for better understanding of both discoverability and access.
Thank you!
Please send questions or comments to:Beverly Geckle – [email protected], or
Suzanne Mangrum – [email protected]