Building Better Collections: Demand-
Driven Acquisition at the University of Denver
Michael Levine-ClarkCollections LibrarianUniversity of DenverSeptember 26, 2011
DefinitionsPatron-Driven Acquisition (PDA)
Faculty Requests/InputUse Data
Demand-Driven Acquisition (DDA)Meets immediate need
Why DDA?
Annual Book Production, 2009
DU Pur
chas
es
North
Am
erican
Sch
olar
ly (Y
BP)
All U
nite
d St
ates
Wor
ld (U
NESCO)
0200000400000600000800000
10000001200000
Books Cataloged 2000-2004 (126,953 Titles)
4+ uses; 18.8%
3 uses; 8.2%
2 uses; 12.8%
1 use; 20.6%
0 uses; 39.6%
Books Cataloged 2000-2004 (126,953 Titles)
4+ uses; $1,084,576
3 uses; $473,060
2 uses; $738,435
1 use; $1,188,418
0 uses; $2,284,53
2
Demand-Driven Acquisitions Goals
Broaden the collectionMore titlesMore publishersMore subjects
Match acquisitions to immediate demandPay at point of needPay for amount of needShort-term loansPurchase-on-demand
Redefining the CollectionEverything we can provide in a
timely manner
Ultimately, bounded only by budget
What We’ve Done at DU
netLibraryColorado Alliance of Research
Libraries
1999-2005
First use free
Purchase on second use
Shared access
Purchase ILL RequestsPrice
Publisher
Publication Date
eBook Library (EBL)Began May 2010
Loaded 42,000 records into catalog (now 6,000)
No budget for FY 2010
Budgeted $1450,000 for FY 2011
The EBL ModelFirst five minutes free
STL for three usesOne day or one week10-15% list price
Purchase on fourth useList price
DU EBL Data (5/1/10-6/30/11)
Actual List
325 titles purchased $23,753 $23,753
3,599 titles with at least one STL
$49,171 $236,037
6,477 titles with at least one browse
$0 $473,378
Total (10,076 titles) $72,924 $733,168
Savings $660,244
Cost Per Transaction
Purchase Type
Total Cost Cost per Transaction
STL $49,171 $9.21
Autopurchase $23,753 $73.09
Transactions by Month
May
-10
Jul-1
0
Sep-
10
Nov-1
0
Jan-
11
Mar
-11
May
-11
0
200
400
600
800
1000
1200
TransactionsAutopurchaseSTL
Relation to Print Holdings
13.7%
8.0%
6.0%0.8%
0.5%
0.7%70.3%
Same Edition
Same Edition Checked Out
Earlier Edition(s)
Earler Edition(s) Checked Out
Library Use Only
Other
No Print
What We Want to Do at DU
A Multi-Format ModelE-Books from multiple
vendors/publishers
Print booksWhen electronic not availableWhen electronic not desired
Managed by YBP
The FutureE-Books on demand
Local print-on-demand option
Make accessible all that we can afford
Budget GoalsCommit most of the
monographs budget
Spend the same to access more titles
What Should Publishers Do?
Be FlexibleTitle-by-title selection
All books
All e-book aggregators
All DDA models
Print-on-Demand
Be PredictableLots of subject-based packages
is confusingWhich product?Which package?
Title lists to vendors/aggregatorsIntegration into approval plan
Work With Approval Vendors
Through e-book aggregators
DirectlyOffer DDA model including
Discovery periodShort-term loan optionPurchase option
Help With DiscoverabilityProvide good MARC records
Work with all discovery tools
Work with all vendors
Provide robust metadata
Thank YouMichael Levine-ClarkCollections LibrarianUniversity of Denver