OhioLINK Collection Analysis ProjectOhioLINK Collection Analysis Project

ASIS&T Annual

Conference28 October 2008

Preliminary Analysis

Edward T. O’Neill, OCLC

Julia A. Gammon, University of Akron

Origin of OhioLINKOrigin of OhioLINK

Originated in 1987 with

the Library Study

Committee Report’s

Recommendation to

create a statewide

catalog

OhioLINK TodayOhioLINK Today

Shared catalog with patron initiated borrowingNearly 50 million books and other library materials Over 600,000 Users at over a hundred institutionsVirtually all public and private academic libraries in Ohio

Including: The State Library of Ohio 5 ARL Institutions11 Universities44 Colleges15 Community Colleges28 Branch campuses 5 Depositories 3 Museums and other independent cultural institutions20 Off-campus hospitals and medical centers

Research ProjectResearch Project

Joint study by OhioLINK,

OhioLINK members, OhioLINK

Collection Building Task Force

(CBTF) and OCLC Research

Much of the planned analysis

is new and untested; not all of

the analysis will be successful

This project is distinct from

OCLC’s collection analysis

service

Distinctive AspectsDistinctive Aspects

Size and scope of collections

Use of local holdings

information

Number and variety of

institutions

FRBR (Functional

Requirements for

Bibliographic Records)

Application of Audience Level

Project GoalsProject 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:

OhioLINK Circulation DataOhioLINK Circulation Data

Item No.:

OCLC No.:

Title:

LCCN:

Location Code:

Status Code:

Circulation:

Renewals:

Accession date:

Date of Last Use:

ISBN:

Source:

i25878591

45207959

The infinite / A.W. Moore

00051722

bc

-

5

1

8/3/2001

8/23/2004

0415252857 (pbk.)

Akron

WorldCat LinkingWorldCat Linking

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

For records lacking an OCLC No. which had either a unique LCCN or ISBN; that number is used to identify the corresponding OCLC No.

Records lacking any standard number were not be validated and were excluded from the study

Records from the 2007 circulation files were paired the 2008 to determine annual circulation

The resulting data set contained the circulation records for ~30 million different items

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

Caution!Caution!

The project is still “in

progress” and the data

analysis is incomplete

Results are preliminary;

revisions and corrections

will occur

The Circulation DataThe Circulation Data

Total circulation 49,697,093

No. of items (Volumes) 29,570,205

Number of items circulated 11,850,584

No. circulated in previous year 2,715,573

No. of manifestations (Books) 6,955,505

Number of books circulated 3,402,603

No. circulated in previous year 986,208

Library Organizational StructureLibrary Organizational Structure

The large universities are complex organizations:

Multiple administrative units

Many different physical locations

Branch campuses

Depositories

Independent cultural institutions

Off-campus hospitals and medical centers

Library Organizational StructureLibrary Organizational Structure

Campuses, independent cultural institutions, and

depositories are treated as top (first) level units

Independent administrative units (if present) within

the campus

Separate libraries (if present) within an administrative

unit

Distinct collections with unique location codes

Three Level Structure for AkronThree Level Structure for Akron

Individual Institutions: What’s Where?Individual Institutions: What’s Where?

How big are the collections?

What is being used?

What are the subject strengths?

How unique?

How old are the books?

How comprehensive?

General Information General Information

SubjectsSubjects

The subject analysis included 24 primary subjects; a more detailed subject analysis with approximately 500 subject areas will included in the final analysis

AgeAge

Statistics on 20 different age groups are provided

Collective Collection: What Do We Have?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?

Subject DistributionSubject Distribution

Circulation of Non-English MaterialsCirculation of Non-English Materials

Average per Item Circulation: 1.68

Circ. Rate by Institution TypeCirc. Rate by Institution Type

ARL Univ. Colleges CC/Branches

Cir

cula

tio

n

1.7 2.3 3.6 2.3

Usage DistributionUsage Distribution

Number of Manifestations

An

nu

al C

ircu

lati

on

455,000

6.5%

Duplication RateDuplication Rate

Publication Date

Ave

rag

e N

o. o

f C

op

ies

4.5

Duplication by SubjectDuplication by Subject

Conclusions?Conclusions?

Only first phase of data analysis complete

Additional and more reliable statistics will be available after the next phase is complete

Preliminary results:

Duplication rates are steady

The 80/20 rule may be closer to 80/5

Limited use of non-English materials

Circulations rates vary greatly by subject, institution, …

To be continued ….

Questions?Questions?

Ed O’Neill, OCLC Research, oneill@oclc.org

Julia A. Gammon, University of Akron, jgammon@uakron.edu