Usage Statistics for E-Resources - E-stats @ SWRI - Sally Krash
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Transcript of Usage Statistics for E-Resources - E-stats @ SWRI - Sally Krash
2
Overview
• Gathering• Evaluation• Future
3
Gathering• 2003-2007
– Do it yourself/spreadsheet
• 2008– Tested 2 different solutions
• 2009-present– Harrassowitz E-Stats (Solution 2)
Do-it yourself Solution 1 Solution 2
Gather data
Manipulate data
Upload data
Generate spreadsheet
Generate charts/graphs
Decision
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Gathering
• Solution 1– Gathering & manipulating data was time
consuming & difficult– Database structure did not reflect our
subscriptions, so it didn’t work for us
• Solution 2– Vendor did the hard parts
– Spreadsheet, delivered twice a year, can be sorted by title or publisher, which works for us
– We have requested that subject information be included to help with collection development.
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Evaluation• 2004– Cost-per-use• Counter JR3 + DB1/DB3
• 2005-2007– Cost-per-use– Cost-per-article
• Counter JR1
• 2008-present• Cost-per-download
– Counter JR1 + BR1/2
• Cost-per-search (citation databases)– Counter DB1
JR1 Successful Full-Text Article Requests by Month & Journal JR3 Number of Successful Item Requests by Month & JournalDB1 Total Searches & Sessions by Month & DatabaseDB3 Total Searches & Sessions by Month & ServiceBK1 Number of Successful Title Requests by Month & TitleBK2 Number of Successful Section Requests by Month & Title
http://www.projectcounter.org/
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Evaluation2004 2005 2006 2007 2008
Cost-per-use
$6.58 $6.15 $10 $7.61 n/a
Cost-per-download
n/a $22.52 $24 $15.52 $22
Cost-per-search
n/a n/a n/a n/a $9.23
Review cost data. MaySet cut-off point. (cost and usage)Generate list of all resources that fall beyond that point. (Cancellation list)Initial review of list. (in Library)Submit preliminary renewal list to subscription agent for pre-payment.Send adjusted list to Library Committee, along with list of needed additions.Revise lists after Library Committee review.Submit final renewal/addition/cancellation lists to subscription agent. Aug.
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EvaluationJR1
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EvalutaionDB1
Jan-07
Feb-07
Mar-07
Apr-07
May-07
Jun-07Jul-0
7
Aug-07
Sep-07
Oct-07
Nov-07
Dec-07
Jan-08
Feb-08
Mar-08
Apr-08
May-08
Jun-08Jul-0
8
Aug-08
Sep-08
Oct-08
Nov-08
Dec-08
Jan-09
Feb-09
Mar-09
Apr-09
May-09
Jun-09Jul-0
90
500
1000
1500
2000
2500
3000
SearchesSessions
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EvaluationBK1
SpringerLink E-Book Downloads
Physics & Astronomy (81)Professional & Applied Computing (396)Mathematics & Statistics (54)Engineering (96)Computer Science (62)Chemistry & Materials Science (20)Misc. (11)
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EvaluationCombined
2005 2006 2007 20080
100,000
200,000
300,000
400,000
500,000
600,000
700,000
800,000
900,000
1,000,000
Library Subscriptions
UsageCost
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Future
• Counter Reports:– Counter JR2 & BR3 Turnaways. We would like to see more publishers
provide this data. We can use it for collection development. – Counter JR5 Number of Successful Full-Text Article Requests by Year-
of-Publication & Journal. Now we can finally see current year usage vs. older/but recent content.
– Counter J/BR1 (optional) Number of Successful Full-Text Item Requests by Month & Title. We don’t care if it’s a book or journal, we care about the download. We are gathering JR 1 & BR1 anyway, and
we are looking at individual titles to assess a cost-per-download.
• New for 2010 (for SwRI)
– Referex: We recently added Referex, an e-book subscription package that only offers search data, no download data. How do we evaluate
this full-text resource with only search data?– E-book purchases: In this case, we are making the purchase up-front,
and then getting usage data. How will we evaluate usage/cost in this case?