Considering the Value of Usage Data for Better Collection ...
Considering the Value of Usage Data for Better Collection Strategies Forrest Link Yuji Tosaka Cathy Weng VALE Annual Users Conference January 4, 2013 Rutgers University 1 Presenters Forrest Link Acquisitions Librarian The College of New Jersey Yuji Tosaka Cataloging/Metadata Librarian The College of New Jersey Cathy Weng Head of Cataloging The College of New Jersey 2
Presentation Summary Report of a library usage study Examined recent library purchases and circulated and ILL titles To find out if and how library purchases met user needs A look at the kinds of data that can be generated and some ways of interpreting that data. Study findings may help reshape local practice of collection development 3 How the Story Begins Charleston Conference 2011 Richard Entlich of Cornell presents on the capture and use of ILS data June 2012 TCNJ Library forms new committee to develop and implement collection development policy July 2012 TCNJ Library hires a new librarian for Access Services and ILL The College of New Jersey
The College Public, primarily undergraduate with graduate programs in nursing and education Approximately 6,100 undergraduates, 650 graduate students, 350 full time faculty The Library Holds over 600,000 volumes Acquires approximately 4,100 books annually Borrows approximately 1,400 unique books annually through ILL Circulates approximately 15,000 unique titles annually *Images taken from TCNJ website, May 3, 2011. 5 Notes on Collection Development Library Collection Development To develop a quality collection in support of communitys academic needs Budgeting Selection (including withdrawal) Collection evaluation
Policy formation (*) * About Collection Development at Cornell University (http://www.library.cornell.edu/colldev/cddescript1.html) accessed Dec. 26, 2012. 7 Rethinking Collection Development Long-standing just in case approach 80/20 statistics Overselection vs. Underselection Emphasis shifted to demand-based funding and selection Towards effective collection development 8 Effective Collection Development To ensure a return on investment Measured by collection use
Aim to avoid Type I and II errors Type II errors: titles acquired but not used Type I errors: titles used but not acquired Can be measured using circulation data and interlibrary loan data (ILL) 9 Measuring Collection Use Circulation statistics Titles that library acquired and used Can identify needs in various subject areas Can identify user groups (student or faculty) ILL titles Reflect user needs that the library doesnt own Can identify user groups 10 Study Questions What do ILL book requests and circulation data tell us about our collection use and patron needs?
How can data analysis inform our collection development practices to better serve our patrons? 11 Beginning Assumptions Effective collection development can be measured by collection use Collection use = meeting user needs User needs represented by titles owned and circulated not owned but borrowed via ILL 12 Data and Methods Data Collection Data extracted for the study period (July 2008June 2012) List of books purchased during the study period Circulation data for titles purchased for the General Collection ILL data for books borrowed
Data Sources 1) Acquisitions data Voyager data for the past four FY periods (July 2008 June 2012) Recent publications with 2007 imprints or later used to analyze circulation and ILL data Imprint Dates for New Acquisitions FY 20082011 Imprint Date Number of titles % of total purchase Cumulative % of total purchase 2005 341 2.1%
Cut-off date Note: Percents do not add up to 100% due to the exclusion of titles published outside the imprint dates above. Data Sources 2) Circulation data Voyager data for the past four FY periods (July 2008 December 2012) General Collections (circulating) Data Sources 3) ILL data OCLC User Statistics for the past four FY periods (July 2008 June 2012) Data Scope Included all faculty, graduate student and undergraduate transactions for books circulated and borrowed via ILL having imprint dates of 2007 onward Eliminated LC classes A, C, S, U, V because of very low acquisition rate End result represented 82% of purchased books
and 30% of books borrowed on ILL Measures Total user needs in a library 1) Circulation of local library materials 2) ILL requests for library materials that are not locally available Focus on recent acquisitions Testing the Assumptions What are we buying? What are we circulating? What are we borrowing on ILL? How well have we done in collection building to meet user needs? Initial Findings Data Set
Acquired Books: Books Acquired 2008-2012 2007 and later imprint ILL: Books Borrowed 2007 and later imprint minus LC class A,C,S,U,V Unique Titles 2007 and later imprint minus LC class A,C,S,U,V Circulation: Books Circulated Unique Titles Circulated Total books loaned 2007 and later imprint minus LC class A,C,S,U,V Unique titles 2007 and later imprint minus LC class A,C,S,U,V 16,575 13,571 5,636 1,682 1,483 127,374 60,273 10,269 5,043
Subject Distribution of Unique Titles Acquired 25% 20% 15% 10% 5% 0% B D E F G H
J K L M N P Q R T Z Subject Distribution of Circulation of Acquired Titles 25% Total Circulation Transactions
Unique Titles Circulated 20% 15% 10% 5% 0% B D E F G H J
K L M N P Q R T Z Subject Distribution of Unique Circulation as a Percentage of Acquisitions 80% 70% 60%
50% 40% 30% 20% 10% 0% B D E F G H J
K L M N P Q R T Z Total Subject Distribution of Unique Title ILL Borrowing 30% 25%
20% 15% 10% 5% 0% B D E F G H J
K L M N P Q R T Z Acquisitions, ILL, and Circulation Data Comparison by Subject 30% ACQ CIRC ILL
25% 20% 15% 10% 5% 0% B D E F G H J
K L M N P Q R T Z Another Way of Looking at the Data If Lending = User needs met and Lending = Circulation + ILL Then (ILL / (Circulation + ILL)) = the part of lending that is ILL or the portion of user needs not met by our collection
Subject Distribution of ILL as % of Lending 30% 25% 20% 15% 10% 5% 0% B D E F G
H J K L M N P Q R T Z Total
Subject Distribution of ILL as % of Unique Title Lending 40% 35% 30% 25% 20% 15% 10% 5% 0% B D E
F G H J K L M N P Q R T Z
Total ILL Subject Distribution by Borrower Type 45% 40% 35% 30% Faculty Undergrad Grad 25% 20% 15% 10% 5%
0% B D E F G H J K L M N
P Q R T Z ILL Borrowing by Subject by Borrower 90% 80% 70% 60% Faculty Undergrad Grad 50%
40% 30% 20% 10% 0% B D E F G H J K
L M N P Q R T Z Circulation by User Group 35% 30% 25% Faculty
Undergrad Grad 20% 15% 10% 5% 0% B D E F G H
J K L M N P Q R T Z Unique Title Circulation by Subject by Group 100% 90%
80% 70% 60% Faculty Undergrad Grad 50% 40% 30% 20% 10% 0% B D
E F G H J K L M N P Q R T
Z Some Rethinking Maybe were looking at this incorrectly Maybe all borrowing (via ILL or our acquired collection) is not equal, not all need Maybe were looking at The Long Tail A Brief Digression The Long Tail The Light Bulb CROSS STITCH ART NOUVEAU / HAMMET, BARBARA. TT STELLA MCCARTNEY / TT505.M34 ALDRIDGE, REBECCA. A43 2011 VERA WANG /
KROHN, KATHERINE TT505.W36 E. K76 2007 VERA WANG : ENDURING STYLE / KROHN, KATHERINE TT505.W36 E. T63 2009 101 FABULOUS FAT-QUARTER BAGS / HAWLEY, M'LISS RAE, TT667 .H395 19562008 JAPANESE KIMEKOMI : FAST, FUN, AND FABULOUS FABRIC HANDBALLS / TT751 .S92 SUESS, BARBARA B. 2008 CROSS STITCH CUTIES. TT778.C76 C76 2007
CROSS STITCH WIT & WISDOM : OVER 45 DESIGNS WITH WORDS TO BRIGHTEN YOUR DAY / ELLIOTT, JOAN. TT778.C76 E45 2007 ELLIOTT, JOAN. TT778.C76 E45 2008 WOMAN'S WORLD IN CROSS STITCH : OVER 40 DESIGNS TO MAKE YOU SMILE / BEWITCHING CROSS STITCH / ELLIOTT, JOAN. TT778.C76 E45 2008 DONNA KOOLER'S ULTIMATE STOCKING COLLECTION : 15 OF
STUMPWORK MEDIEVAL FLORA / NICHOLAS, JANE. TT778.S75 N53 2009X KNITKNIT : PROFILES + PROJECTS FROM KNITTING'S NEW WAVE / GSCHWANDTNER, SABRINA. TT820 .G84 2007 TOP DOWN SWEATERS : KNIT TO FIT, TOP TO BOTTOM / MARQUART, DOREEN TT820 .M32 L. 2007 FANTASY CROSS STITCH : 60 SPELL-BINDING DESIGNS / KNITTING ART : 150 INNOVATIVE WORKS FROM 18
CONTEMPORARY ARTISTS / SEARLE, KAREN. TT820 .S44 2008 CHEMO CAPS & WRAPS / ELLISON, CONNIE. TT825 .C386 2010 CABLE CONFIDENCE : A GUIDE TO TEXTURED KNITTING / HARPER, SARA LOUISE, 1963- TT825 .H2564 7 2007 KNIT ALONG WITH DEBBIE MACOMBER. 10 SHAWLS TO MAKE AND SHARE. FRIENDSHIP SHAWLS
TT825 .K55F7 5 2008 AFGHANS FOR ALL REASONS & ALL SEASONS : 29 CROCHETED AFGHANS / TT825 .L456 LEINHAUSER, JEAN. 2007 GRAMMY'S FAVORITE KNITS FOR BABY / MARQUART, DOREEN L. VAMPIRE KNITS : PROJECTS TO KEEP YOU KNITTING FROM TWILIGHT TO DAWN / MILLER, GENEVIEVE, TT825 .M564 19692010 KNIT KIMONO : 18 DESIGNS WITH SIMPLE SHAPES / SQUARE, VICKI, 1954-
TT825 .S7138 5 2007 MAKING HISTORY : QUILTS & FABRIC FROM 1890-1970 / BRACKMAN, BARBARA. TT835 .B6421 5 2008 TT825 .M267 8 2011 QUILTING DESIGNS FROM THE PAST : 300+ DESIGNS FROM 1810-1940 / KINNEY, JENNY CARR, 1951- CATHEDRAL WINDOW QUILTS : THE CLASSIC FOLDED TECHNIQUE AND A WEALTH OF VARIATION EDWARDS, LYNNE, TT835 .E378 19432008
QUICK STAR QUILTS & BEYOND : 20 DAZZLING PROJECTS, KRENTZ, JAN P., CLASSROOM-TESTED TECHNIQUES, 1955- TT835 .C376 2008 TT835 .K768 5 2009 FOOLPROOF MACHINE QUILTING : LEARN TO USE YOUR WALKING FOOT : PAPER-CUT PATTERNS TT835 .M384 MASHUTA, MARY. 28 2008 PAULA NADELSTERN'S KALEIDOSCOPE QUILTS : AN ARTIST'S JOURNEY CONTINUES. NADELSTERN, PAULA. COMPLETE BOOK OF CHINESE KNOTTING : A COMPENDIUM OF TECHNIQUES AND VARIATION
TT840.M33 . CHEN, LYDIA, 1940- C46 2007 TT835 .N327 5 2008 Caution in using ILL Data Purpose of ILL service To meet academic needs (e.g., multidisciplinary titles) To meet user needs of general interest outside curriculum scope For recreational purposes Take above factors into consideration when considering user-initiated acquisitions Early Conclusions We have made some inaccurate assumptions all need is not equal The question is not What should we buy? but Should we buy? We cannot judge the usefulness of a book
without expert mediation Findings can shed light on effectiveness of collection development practices Post Study Questions What constitutes a good academic collection? Should ILL requests continue be seen as needs in the long tail or are we looking at the cutting edge? If ILL needs represent more than just long tail, should the library re-examine our collection development policy? Thank You! Questions? Forrest Link, [email protected] Yuji Tosaka, [email protected] Cathy Weng, [email protected]
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