Analysis of Collection Use in the OhioLINK Library Consortium

Julia A. Gammon, University of Akron

Anne T. Gilliland, OhioLINK

Edward T. O’Neill, OCLC

2

In the beginning….

Ohio’s libraries & cooperation

Ohio College Library Center (OCLC)

OhioLINK

3

1987 Library Study Committee Report

3 Recommendations:

Create a book depository system

Create a statewide electronic catalog

Appoint a steering committee

4

OhioLINK Planning Paper

Coordination in purchasing of shared collections

Expanded access to electronic information

Improved access to information infrastructure

Promotion of scholarly communications

Improved economies in purchase of electronic resources

5

OhioLINK’s Philosophy

User Empowerment–No Mediation

Abundant--Not rationed access

Universal—Not selected access

Integrated—Not segregated access

Leveraged spending

Cooperation—Not parochial orientation

6

Who belongs to OhioLINK?

87 members

16 public universities

23 community/technical colleges

47 private colleges

State Library

Testing Public and School Libraries

7

What do we share?

600,000+ Users

46 Million Shared Catalog Records

4,500 Simultaneous Users

140 Electronic Research Databases

12,000 Electronic Journals

25,000 E-books

14,000 Electronic Theses & Dissertation

Thousands of images, videos and sounds

8

Circulation of Materials

46 million items (27 million books) to pick from

120 delivery sites

Patron initiated

Delivered to patron selected site

48 hours

9

Materials Delivered Around State

10

OhioLINK’s Collection Building Task Force Charge

To reduce duplication

To increase local collection development activities

To expand the amount spent on cooperative purchases

To move beyond books…

11

Collection Building Task Force History

1997 Discussion began

1998 Wrote statewide RFP

1998 Selected vendor—YBP

1999 Coordination projects began

12

OhioLINK’s Current Tools for CCD

YBP’s Gobi

GobiTween“Not Bought” ListsPeer reportsManagement reports

Subject groups

Cooperative projects

Road Shows

13

Books: How Many Copies Do We Need?

14

Collection Assessment

“Selling” CCD without data

Informed decisions

Questions: What do we want to know?

Commercial products

OCLC Office of Research

15

Collection Analysis Information Needed

Is our OhioLINK collection getting more diverse?

Is duplication of titles increasing or decreasing?

What does the complete overall OhioLINK collection look like?

What books didn’t we purchase? (Not Bought in Ohio or ILL stats?)

Does the 80/20 rule (80% of users’ needs are satisfied by 20% of the collection) apply?

16

OhioLINK-OCLC Research Project

Project Goal

Collect, analyze and compare book circulation data from all OhioLINK libraries

Use OCLC #, ISBN or LCCN to link circulation records to WorldCat bib records

17

2. Data Collection

18

UCB Study vs. OhioLINK Study

Similar basic design

OhioLINK study includes items that do not circulate and more kinds of books

Neither could separate Inn-Reach transactions

Each is a snapshot

19

WorldCat Linking

For records with a valid OCLC No., the OCLC No. is used as the link

For records with an obsolete OCLC No., the obsolete OCLC No. is replaced with current OCLC No.

For records without an OCLC No. but with either a LCCN and/or an ISBN the LCCN (preferred) or the ISBN to identify the corresponding WorldCat record and find the OCLC No.

Records lacking an OCLC number, LCCN, or ISBN could not be validated

20

Design for Data Collection

Keep output simple for libraries

Libraries output circulation information

OCLC matches with richer bibliographic information from World Cat

OCLC filters some records

21

Testing

Testing throughout much of 2006 and early 2007

Wright State University and several community colleges

Refined instructions and matching techniques

22

Publicity

Project needs widespread support

Sufficient notice and time to complete

Support from staff at many levels

Areas of concern

23

Data Collection

April 29-May 27, 2007

Excellent participation rate

27,002,190 item records

Snapshot

24

WorldCat Linking

Validating link

The title from the OhioLINK circulation record was compared to the title from the WorldCat record

If the title from the circ record was similar to the title in the WorldCat record, the record was validated

Determining material type

Only books and manuscripts were included

Material type was based on fixed fields codes in the WorldCat records (bib lvl = m and type = a or t)

25

WorldCat Linking

Records Received … 33,146,008

Records Validated … 30,718,454 (92.7%)

Validated Books …… 27,002,190 (81.5%)

26

3. Analysis

27

Caution!

Only first phase of the data collection is complete

Results are preliminary; revisions and corrections will occur

28

Most Held

Libraries: 68

Copies: 109

Circulations: 99

29

Most Copies

Libraries: 12

Copies: 9,542

Circulations: 9The National union catalog, pre-1956 imprints

30

Most Circulated

Libraries: 6

Copies: 92

Circulations: 6,023

31

Group One FRBR Entities

Is exemplified by

Is embodied in

WorkA distinct intellectual or artistic creation

Is realized through

ExpressionThe intellectual or artistic realization of a work

ManifestationThe physical embodiment of an expression

ItemA single exemplar of a manifestation

32

Holdings vs. Circulations

0

5,000,000

10,000,000

15,000,000

20,000,000

25,000,000

30,000,000

Items Manifestations Works

Total

Circulated

33

Subject Distribution

0 2,000,000 4,000,000 6,000,000

Language, Linguistics, and LiteratureHistory and Auxiliary Sciences

Business and EconomicsPhilosophy and Religion

LawSociologyMedicine

Engineering and TechnologyArt and Architecture

EducationPolitical Science

Library Science, Generalities, andBiological Sciences

Physical SciencesGeography and Earth Sciences

MusicMathematics

PsychologyPerforming Arts

AgricultureComputer Science

Physical Education and RecreationChemistry

Anthropology

Number of Items

34

Duplication by Subject

1 2 3 4 5 6 7 8 9

LawChemistry

PsychologySociologyEducation

MathematicsPolitical Science

Physical SciencesPerforming Arts

MusicLibrary Science, Generalities, and Reference

Biological SciencesMedicine

Business and EconomicsAnthropology

History and Auxiliary SciencesGeography and Earth Sciences

Philosophy and ReligionComputer Science

Art and ArchitecturePhysical Education and Recreation

Language, Linguistics, and LiteratureEngineering and Technology

Agriculture

No. of Copies

35

Circulation by Subject

0 1 2 3 4

Computer SciencePsychology

SociologyPhysical Education and Recreation

MedicineAnthropologyMathematics

Art and ArchitecturePerforming Arts

MusicChemistryEducation

Engineering and TechnologyBiological Sciences

Philosophy and ReligionPhysical Sciences

History and Auxiliary SciencesAgriculture

Language, Linguistics, and LiteratureBusiness and Economics

Political ScienceGeography and Earth Sciences

Library Science, Generalities, and ReferenceLaw

Circulation per Item

36

Age of Subject Collections

1970 1975 1980 1985 1990

Computer ScienceLaw

MedicinePerforming Arts

SociologyGeography and Earth Sciences

Engineering and TechnologyBusiness and Economics

Physical Education and RecreationAnthropologyMathematics

Art and ArchitectureEducation

AgriculturePsychology

Biological SciencesPolitical Science

MusicPhysical Sciences

Library SciencePhilosophy and Religion

ChemistryHistory and Auxiliary Sciences

Language and Literature

Median Publication Date

37

Hot Subjects

Computer Science (QA 75-76)

Women, Feminism, Life Skills, Life Style (HQ 1101-2044)

Medicine: Special Subjects (R 690-920)

Buddhism (BQ)

Nursing (RT)

Broadcasting (PN 1990-1992)

38

Language Distribution

0 200,000 400,000 600,000 800,000

EnglishGerman

FrenchSpanishRussian

OtherChinese

ItalianJapanese

LatinHebrew

PolishGreek (Modern)

ArabicIndonesianPortuguese

24,386,814

Number of Items

39

Usage Distribution

0%

20%

40%

60%

80%

100%

0.001% 0.010% 0.100% 1.000% 10.000% 100.000%

% of Books

% o

f C

ircul

atio

n

12.86%

(788,483)

40

Annual Collection Growth

0

25,000

50,000

75,000

100,000

125,000

1900 1915 1930 1945 1960 1975 1990 2005

Publication Date

No

. of M

ani

fest

atio

ns

Ad

ded

Max 114,375 (2000)

41

Duplication Rate

1

2

3

4

5

6

1900 1915 1930 1945 1960 1975 1990 2005

Publication Date

Ave

rag

e N

o. o

f C

op

ies

42

Circulation

Library Unit Size Ave. Circ.

Akron Campus 758,839 4.20

University Libraries 683,222 4.59

Bierce 572,288 4.58

Science 85,973 6.01

Archives 24,961 .04

Law 75,250 .68

Local Storage 367 .08

Akron Art Museum 11,514 .00

Wayne Campus 20,639 2.42

Depository 245,644 1.08

43

Median Publication Date

Library Unit Size Pub. Date

Akron Campus 758,839 1989

University Libraries 683,222 1988

Bierce 572,288 1987

Science 85,973 1952

Archives 24,961 1952

Law 75,250 1995

Local Storage 367 1952

Akron Art Museum 11,514 1987

Wayne Campus 20,639 1994

Depository 245,644 1971

44

Questions?

This presentation is available at:

http://platinum.ohiolink.edu/cbtf/oclcres.ppt.