OhioLINK Collection Analysis Project Preliminary Analysis Julia A. Gammon, University of Akron Ed O’Neill, OCLC Research 2 nd OhioLINK OCLC Workshop April 13, 2009

The Overview

Project Goals  To reduce unnecessary duplication  To increase local collection development activities  To expand the amount spent on cooperative acquisitions  To strengthen the collective collection For the book collection:

Research Project  Joint study by OhioLINK, OhioLINK members, OhioLINK Collection Building Task Force (CBTF) and OCLC Research  This project is distinct from OCLC’s collection analysis service  Much of the planned analysis is new and untested; not all of the analysis will be successful  Thank You: OCLC and OhioLINK especially Celeste Feather; CBTF members and Lead Imps

Distinctive Aspects  Size and scope of collections  Use of local holdings and circulation information  Number and variety of institutions  FRBR (Functional Requirements for Bibliographic Records)  New metrics (Audience Level, Comprehensiveness, …)

Past Year’s Activity  Collected the second set of circulation data.  Compared the two sets of data to determine the annual circulation.  Identified (with extensive help) which items can circulate.  Revised the library organizational structure.

Caution!  The project is still “in progress” and further data analysis is planned.  Some results are still preliminary; your help and insight is essential to identify errors and inconsistencies and to determine what additional analysis would be beneficial.

The Data Item No.: OCLC No.: Title: LCCN: Location Code: Status Code: Circulation: Renewals: Accession date: Date of Last Use: ISBN: Source : i The infinite / A.W. Moore bc /3/2001 8/23/ (pbk.) Akron

WorldCat Linking  Obsolete OCLC numbers were replaced,  Unique LCCNs or ISBNs were used to identify an OCLC number,  Records lacking any standard number were excluded from the study,  Records from the 2007 & 2008 circulation files were paired to determine annual circulation,  Approximately 93% of the records were validated; many of the unvalidated records were for non-book materials. The OCLC Number is used to link the circulation records to the corresponding bibliographic record in WorldCat

The Circulation Data Total circulation49,697,093 No. of items (Volumes)29,570,205 Number of items circulated11,850,584 No. circulated in previous year2,715,573 No. of manifestations (Books)6,955,505 Number of books circulated3,402,603 No. circulated in previous year986,208

Types of Analysis  Institution focused  The Collective collection  Subject based

Institution Focused Analysis  Detailed holdings  General Statistics  Languages  Age  Subjects

Multi Level Structure Third level units:Distinct library units. Location codes :The codes used within OhioLINK to identify the location of the individual items. Over 4,200 different location codes are used. Top level units:Individual campus, depositories, and external organizations (Museums, Centers, Hospitals) bccco, bccct, bccir, bccm, bcgd, bcgdo, bcmu, … University of Akron Second level units:Separate administrative units [university libraries, law, medicine, etc.) or distinct library units. University of Akron University Libraries University of Akron University Libraries Bierce Library

Three Level Structure for Akron Library Unit Complete Collection Circulating Collection Circulation ( ) Circulation Rate Akron Campus841,303705,11984, Law89,23137,5034, University Libraries752,072667,61679, Bierce637,975587,79363, Science88,05578,83715, Archives25, Local Storage Wayne Campus21,32718,6644, NE Depository261,070257,1824,

General HoldingsUnique Holdings Audience Level Total CirculationAnnual Circ.Active Materials Library Unit TotalCirculatingNon-CircNumberPercentageFrequencyRateFrequencyRateNumberPercentage NE Depository260,382256,9613,42116,7196% , , ,62441% Wayne Campus21,47419,7921, %0.3754, , ,89565% Akron Art Museum % % University of Akron764,925650,730114,19538,5905%0.602,716, , ,62856% Law89,20727,38161,8263,6744%0.7147, , ,82784% University Libraries675,718623,34952,36934,9165%0.592,668, , ,80153% Bierce637,975621,62416,35130,1925%0.592,663, , ,40550% Science11,7011,62010, %0.595, , ,39497% Archives25,6000 3,94015% ,600100% Local Storage % %

Age All Dates Library UnitAverage AgeAll ItemsCirc. Items Active ItemsAnnual Circ.Circ. Rate NE Depository ,070256,9614,0104, Wayne Campus18.121,47419,7923,5624, Akron Art Museum25.111, Akron Campus ,303726,99467,88787, Law34.489,23127,3811,7134, University Libraries ,072699,61366,17482, Bierce ,975621,62453,41565, Science21.188,05577,88412,75817, Archives64.625, Local Storage Goodyear Tire Company

Languages All LanguagesFrench Library UnitAll Items Circ. ItemsCirc.Circ RateAll Items Circ. ItemsCirc.Circ Rate NE Depository260,382256,9614, , Wayne Campus21,47419,7924, Akron Art Museum University of Akron764,925650,73071, ,5002, Law89,20727,3814, University Libraries675,718623,34966, ,4482, Bierce637,975621,62465, ,9342, Science11,7011,6201, Archives25, Local Storage

Subjects All MaterialsEthics Library UnitAll Items Circ. Items Annual Circ.Circ. RateAll Items Circ. Items Annual Circ.Circ. Rate NE Depository260,382256,9614, Wayne Campus21,47419,7924, Akron Art Museum University of Akron764,925650,73071, ,6061, Law89,20727,3814, University Libraries675,718623,34966, ,5681, Bierce637,975621,62465, ,4311, Science11,7011,6201, Archives25, Local Storage

Collective Collection: What Do We Have?  How many items do we have?  What languages do we have?  How old are they?  How many are unique?  In what subjects?  How many copies do we need?

Most Used Total Circulation : 796

Most Widely Held Held by 69 Institutions (95%)

Distribution of Resources Manifestations

OhioLINK Resources (FRBR View)

Duplication Rate Publication Date Average No. of Copies 4.5

Subject Distribution

Annual Circulation Rates by Subject

Obsolescence Rates

Circulation Rate vs. Age

Annual Non-English Circulation Rates Average Circulation Rate: 0.109

Usage Distribution Number of Manifestations Annual Circulation 455, %

Duplication by Subject

Metrics

Simple Metrics  Collection size (FRBR View)  Number of items  Number of Manifestations  Number of Works  Circulation  Annual circulation (Count \ rate)  Total circulation (Count \ rate)  Active Proportion  Age  Mean (Average)  Median  Percent English

Coverage The percent of all OhioLINK manifestations held in a given collection. Example: The University of Akron’s Ethics collection  Collectively OhioLINK libraries hold 13,308 different manifestations classified as Ethics,  1,560 of these manifestations are held by the University of Akron, Coverage = 1,560 / 13,308 = 12%

Comprehensiveness The proportion of all OhioLINK circulations that could have been met by the manifestations in a given collection. Example: The University of Akron’s Ethics collection  All Ethics manifestations in OhioLINK libraries circulated 8,817 times last year,  Collectively the Ethics manifestations held at the University of Akron accounted for 3,060 circulations, Comprehensiveness = 3,060 / 8,817 = 0.347

Audience Level 0 (Juvenile)(Scholarly) 1 Octopusses and squid Audience level: 0.06  Phylogeny and systematics of the treehopper subfamily Audience level: 0.96  Fundamentals of entomology Audience level: 0.51 

Subjects

View within Institutions University of Akron Subject Description Number of Works No. of Manifes- tations Number of Items Annual CirculationCoverage Comprehen -siveness Average Age Percent English Audience Level Philosophy and Religion24,93425,94627,5813,1816% %0.60 Philosophy: Periodicals, Societies, Congresses % %0.61 Philosophy: History and Systems, Ancient through Renaissance1,8051,9172, % %0.65 Philosophy: History and Systems, Post Renaissance4,8485,1015, % %0.65 Logic % %0.68 Speculative Philosophy1,5171,5391, % %0.65 Aesthetics % %0.64 Ethics1,5001,5601, % %0.61 Religions, Mythology, Rationalism2,6852,7742, % %0.56 Judaism % %0.55 Islam, Baha'ism, Theosophy % %0.54 Buddhism % %0.59 Christianity (General)2,3662,4562, % %0.59 Bible1,2891,4481, % %0.51 Doctrinal Theology1,2571,2981, % %0.55 Practical Theology1,2561,2751, % %0.54 Eastern Christian Churches % %0.59 Roman Catholic Church1,6731,7101, % %0.58 Protestantism1,8701,9002, % %0.58

View across Institutions Ethics (BJ ) Institution Number of Works Number of Manifes- tations Number of Items Annual Circulation Coverage Comprehen -siveness Average Age Percent English Audience Level Cincinnati2,4822,6383, % %0.65 Oberlin2,7932,9603, % %0.64 Miami1,9552,0162, % %0.62 BGSU1,7291,8582, % %0.57 Dayton2,2972,3953, % %0.57 CWRU2,2452,4012, % %0.66 Ohio Univ.1,6131,6881, % %0.65 John Carroll1,6401,6721, % %0.61 Toledo1,5821,6341, % %0.62 Wright State1,0591,0801, % %0.62 Akron1,5001,5601, % %0.61 Ohio State1,9522,0522, % %0.70 Kent State2,1782,3752, % %0.63 Denison1,3111,3431, % %0.59 Youngstown1,5951,6501, % %0.59

Conclusions  Preliminary conclusions:  Duplication rates are steady,  The 80/20 rule may be closer to 80/6,  Limited use of non-English materials,  Unique resources widely distributed,  Circulation rates vary greatly by subject, institution, …  Next Steps  What information is helpful; what isn’t?  What did we get wrong?  What did we miss?