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e-stats @ SwRI

Sally Krashskrash@swri.org

Feb. 1, 2010

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Overview

• Gathering• Evaluation• Future

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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?