OhioLINK Collection Analysis Project

ASIS&T Annual

Conference28 October 2008

Preliminary Analysis

Edward T. O’Neill, OCLCJulia A. Gammon, University of Akron

Origin of OhioLINK

Originated in 1987 with the Library Study Committee Report’s Recommendation to create a statewide catalog

OhioLINK 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 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 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 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 Data

Item No.:OCLC No.:

Title:LCCN:

Location Code:Status Code:

Circulation:Renewals:

Accession date:Date of Last Use:

ISBN:Source:

i2587859145207959The infinite / A.W. Moore00051722bc-518/3/20018/23/20040415252857 (pbk.)Akron

WorldCat 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!

The project is still “in progress” and the data analysis is incomplete

Results are preliminary; revisions and corrections will occur

The Circulation Data

Total circulation 49,697,093No. of items (Volumes) 29,570,205Number of items circulated 11,850,584No. circulated in previous year 2,715,573

No. of manifestations (Books) 6,955,505Number of books circulated 3,402,603No. circulated in previous year 986,208

Library 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 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 Akron

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

Subjects

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

Age

Statistics on 20 different age groups are provided

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 Distribution

Circulation of Non-English Materials

Average per Item Circulation: 1.68

Circ. Rate by Institution Type

ARL Univ. Colleges CC/Branches

Circ

ulat

ion

1.7 2.3 3.6 2.3

Usage Distribution

Number of Manifestations

Ann

ual C

ircul

atio

n

455,000

6.5%

Duplication Rate

Publication Date

Ave

rage

No.

of

Cop

ies

4.5

Duplication by Subject

Conclusions?

Only first phase of data analysis completeAdditional 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?

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

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