OhioLINK Collection Analysis Project ASIS&T Annual Conference 28 October 2008 Preliminary Analysis Edward T. O’Neill, OCLC Julia A. Gammon, University of Akron
Mar 27, 2015
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, [email protected]
Julia A. Gammon, University of Akron, [email protected]