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Usage Statistics for E-Resources - E-stats @ SWRI  - Sally Krash
 

Usage Statistics for E-Resources - E-stats @ SWRI - Sally Krash

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Presented at the 2010 Electronic Resources & Libraries Conference. -- ...

Presented at the 2010 Electronic Resources & Libraries Conference. --

Sally R. Krash, Southwest Research Institute --

Abstract: Usage statistics with cost per use have become an important factor in evaluating an electronic resource. This session will consider the ways to gather usage statistics and also look at the other points of considerations in e-resource evaluation. Discussion will also cover the value of usage statistics and whether we are just being overwhelmed by numbers.

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  • Renewal considerations:Cost-per data + current research needs + research trends + needed new resources. “Core Collection” no longer a factor for us.
  • We look at downloads by journal & publisher.
  • We look at searches by platform (citation databases); we look at trends and we prefer to see an upwards trend.
  • We also look at activity by subject area for both journals & books, and use this information for collection development.
  • Usage = downloads + searches (citation databases only). We would like to see the blue line get closer to the red line.

Usage Statistics for E-Resources - E-stats @ SWRI  - Sally Krash Usage Statistics for E-Resources - E-stats @ SWRI - Sally Krash Presentation Transcript

  • e-stats @ SwRI Sally Krash skrash@swri.org Feb. 1, 2010 1
  • Overview• Gathering• Evaluation• Future 2
  • 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 2Gather data  Manipulate data  Upload data  Generate   spreadsheetGenerate  charts/graphsDecision  3
  • 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. 4
  • 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 DB1JR1 Successful Full-Text Article Requests by Month & JournalJR3 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/ 5
  • Evaluation 2004 2005 2006 2007 2008Cost-per- $6.58 $6.15 $10 $7.61 n/auseCost-per- n/a $22.52 $24 $15.52 $22downloadCost-per- n/a n/a n/a n/a $9.23searchReview 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. 6
  • Evaluation JR1 7
  • 1000 1500 2000 2500 3000 500 0 Jan-07 Feb-07 Mar-07 Apr-07 May-07 Jun-07 Jul-07 Aug-07 Sep-07 Oct-07 Nov-07 Dec-07 Jan-08 Feb-08 Mar-08 Apr-08 May-08 Jun-08 DB1 Jul-08 Aug-08 Sep-08 Oct-08 Evalutaion Nov-08 Dec-08 Jan-09 Feb-09 Mar-09 Apr-09 May-09 Jun-09 Jul-09 Sessions Searches8
  • Evaluation BK1SpringerLink E-Book Downloads Physics & Astronomy (81) Professional & Applied Computing (396) Mathematics & Statistics (54) Engineering (96) Computer Science (62) Chemistry & Materials Science (20) Misc. (11) 9
  • Evaluation Combined Library Subscriptions1,000,000 900,000 800,000 700,000 600,000 500,000 Usage Cost 400,000 300,000 200,000 100,000 0 2005 2006 2007 2008 10
  • 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? 11