The quick & the dirty harker -kizhakkethil
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Given the decreasing budgets for collections at many libraries, librarians are looking at abstracting and indexing (A&I) resources and full-text databases with a more skeptic eye. In addition to traditional evaluation measures, such as costs, usage and faculty input, we looked at the overlap of indexing and/or full-text coverage. Those who have conducted such overlap studies have approached it at either the journal or article level. Article-level overlap studies demonstrate coverage of selected articles in the databases under study. Conversely, journal-level studies examine the extent of indexing of journals among the selected databases. Both methods are very time-consuming and require extensive resources. A simplification of the journal-level method is to compare lists of journals indexed. Two tools, Cufts and JISC's Academic Database Assessment Tool (ADAT) are very useful for this purpose, but do not include all databases. Many databases need to be manually collected. This presentation will describe the background to such a project, the specific tools and procedures used, how the results were used to address budget reductions, and the limitations of the results. Members of the audience will be able to consider using this method for evaluating their own abstract and index databases for budgetary purposes. Presenter: Karen Harker Collection Assessment Librarian, University of North Texas
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The quick & the dirty harker -kizhakkethil
- 1. The Good, the Bad & the Ugly of Database Overlap at the Journal Title Level By Karen R. Harker & Priya K., University of North Texas Libraries
- 3. Web-scale discovery systems are changing the information ecosystem Duplication of content is no longer a necessary evil Materials budgets being squeezed Key Question: What could we drop, if we had to? What we wanted to know
- 4. Done the hard way Limited to Abstract & Indexes Only First Attempt, 2012 • Download Lists • Import into Database Coverage • Paired Comparisons • On ISSN Match • Overlap Rate • Unique Titles Report
- 5. Outcome of First Attempt The Good Confirm suspicions Some databases cut Updated information Some additional info coverage years scope of coverage Provided foundation database The Bad & the Ugly Took a lot of time Some lists not easily transportable Some lists without ISSNs Limited to one-on-one comparisons
- 6. Another round of budget cuts Looking at full-text aggregator databases Gathering more data about resources Less time to devote Graduate Student Assistant help Second Attempt, 2014
- 7. JISC Academic Database Assessment Tool (ADAT) CUFTS Serials Solutions Overlap Analysis Reinventing the Wheel?
- 8. Academic Database Assessment Tool (ADAT) Originally from JISC (UK) Now administered by Center for Research Libraries (CRL) Lost some functionality Selected resources Paired comparisons only No differentiation between indexing or full-text JISC ADAT
- 9. What ADAT used to provide Jacso, P. (2010). The JISC academic database assessment tool - - virtues and vices. Online Information Review, 34(5), 806-814.
- 10. What you get from ADAT now
- 11. Open Source Serials Management Simon Fraser University, BC, Canada Public tools: Resource Comparison Broad selection of resources Differentiates between indexing and full-text CUFTS
- 12. Like CUFTS Specific to UNT Libraries’ holdings Compare one to any number of resources Full-text only – no information on indexing alone Serials Solutions Overlap Analysis
- 13. Trying other sources CUFTS JISC ADAT Serials Solutions Overlap Analysis Compare results with manual version Good enough?
- 14. Priya Kizhakkethil Graduate Library Assistant
- 15. CUFTS Maintenance Tool – Resource Comparison Serial Solutions – Overlap Analysis Center for Academic Resources, JISC Collection – Academic Database Assessment Tool Tools Used
- 16. CUFTS
- 18. JISC ADAT
- 19. Number of… Unique Titles Titles Overlapped in Target Database Unique Full-Text Titles Full-Text Titles Overlapped in Target Database Kind of data collected
- 20. Data derived Indexed Total number of titles indexed % of Unique titles % of titles Overlapped Full-Text Total number of full- text titles % of Unique full text titles % of full-text titles Overlapped
- 21. Using CUFTS
- 24. Unique Titles via CUFTS
- 25. # Unique from CUFTS
- 35. Results from JISC ADAT
- 36. Recording Results from JISC ADAT
- 37. Conclusions on Data Gathering Quick Easy to run Recently updated JISC summary table Serials Solutions summary Dirty Data didn’t match Data changed over time CUFTS Sloooow Summary difficult to find Data requires tweaking
- 38. Reinventing the Wheel? Is this better than doing it manually?
- 39. The Good, the Bad & the Ugly JISC ADAT The Good: Simple table The Bad: Limited number of databases 15 Bibliographic 9 Full-Text Only paired-comparison No pretty pictures The Ugly: Unable to download or export results CUFTS The Good: Extensive list of databases and versions. Can download results. Can compare indexing & full- text separately Can compare up to 4 databases at once The Bad: Some resources not available The Ugly: Had not been updated at time of first attempt.
- 40. The Good, the Bad & the Ugly Serials Solutions Overlap Analysis The Good: Easy to run Nice summaries Can download results Compare any number of resources Serials Solutions Overlap Analysis The Bad: Limited to full-text coverage only The Pretty: Is BEST!
- 41. Comparison of Sources The Good Mostly consistent Within 10% Most databases & aggregators covered About 15% not available Some coverage details Year Scope The Bad Duplication of titles Missing ISSNs Lack of coverage details Year Scope
- 43. Coyote Ugly Wildly different denominators! Different kinds of content.
- 44. The Good: Much faster The Bad: Not all databases available The Ugly: Some data unreliable or inconsistent. Outcomes
- 45. Need All Four Wheels ADAT CUFTS SerSol Manual Hart, Alfred. Improvement in Wagon-Brakes., Patent, December 4, 1877; digital images, (http://texashistory.unt.edu/ark:/67531/metapth166725/ : accessed April 24, 2014), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu ; crediting UNT Libraries Government Documents Department, Denton, Texas.
Hinweis der Redaktion
- In the days of silo’d databases – each with their own search interface – overlap of content was essential.
- In the world of Discovery systems, this duplication is no longer necessary
- This is what you get now – a simple table, yes, but of limited value. And while the linked numbers do provide a list of titles – that’s all – all of the info about each title is hidden behind another link. You can’t download the lists with the ISSN.
- EconLit is the target database, the one we were interested in.
- Clicking on the total overlap number gives you the full list of titles, which also provides details about the overlap, where they are overlapped and for which year. It can be downloaded into Excel.
- And then there’s Coyote Ugly…For some resources, we ended up with wildly different number of titles reported by the systems. Here is the strange case of EconLit. When we compared the full-text coverage to Business Source Complete, each system we used to compare the two showed such different numbers that it was simply impossible to determine the true overlap. Interestingly, Serials Solutions & CUFTS were quite close and showed similar overlap rates. But this did not match the full-text journals list provided from EBSCO itself! It turns out that SS & CUFTS include reports and other kinds of content, not just journals, which explains the difference. Because the usually don’t have ISSN’s, it is quite difficult to match these kinds of content.