ohiolink collection analysis project report on the oclc/ohiolink circulation study julie gammon,...
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OhioLINK Collection Analysis ProjectOhioLINK Collection Analysis Project
Report on the OCLC/OhioLINK Circulation Study
Julie Gammon, University of Akron
Ed O’Neill, OCLC Research
WebinarNov. 18, 2010
The OverviewThe Overview
Research ProjectResearch Project
Joint study by OhioLINK, OhioLINK members, OhioLINK Collection Building Task Force (CBTF) and OCLC Research
The goal is to strengthen the collective collection and expand cooperative acquisitions
This project is distinct from OCLC’s collection analysis service
Much of the analysis is new or previously untested
Distinctive AspectsDistinctive 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, …)
The LibrariesThe Libraries
Library Type NumberARL 5Universities 18Colleges 362 Year Colleges 49Depositories 6Other Types 25
The DataThe 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
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 (1 Year)The Circulation Data (1 Year)
Annual circulation 2,822,035
No. of Items (Volumes) 29,002,327
No. of Items Circulated 2,106,142
No. of manifestations (Titles) 6,779,969
No. of Manifestations Circulated 1,041,405
Multi Level StructureMulti 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 Holdings Structure (Akron)Three Level Holdings Structure (Akron)
AnalysisAnalysis
Individual Institution FocusIndividual Institution Focus
Detailed holdings
General Statistics
Languages
Age
Subjects
Single campus Language, Age, and Subjects tables have been added to improve readability
Language Table (Akron)Language Table (Akron)
12 Major Non-English Languages
Age Tables (Akron)Age Tables (Akron)
Subjects Tables (Akron)Subjects Tables (Akron)
‘Collective’ Collection Focus‘Collective’ Collection Focus
Tables Subject Language
Analysis Subject Language Duplication Obsolescence Library Type FRBR etc.
Subject Table (Advertising)Subject Table (Advertising)
Circulation Rate: The average
number of times a circulating item in
the collection was used during the
year observed.
Percent Coverage: The percent of all
OhioLINK manifestations held in
specified collection.
Comprehensiveness: The proportion
of all OhioLINK circulations that
could have been met by the
manifestations in the collection.
Audience Level: The type of audience for which the collection is most suitable.
Audience LevelAudience 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
Language Tables(German / Language & Literatue)Language Tables(German / Language & Literatue)
Eight broad subjects are used:• Arts & Recreation• Business & Economics• History & Geography• Language & Literature• Science & Technology• Social Science• Medicine• Law
Relative Circ. Rate: The circulation
rate relative to the rate for English
language books.
Holdings by Library TypeHoldings by Library Type
ARLs; 27.0%
Universities; 27.3%
Colleges; 24.6%
2yr Colleges, 6.0%
Depositories, 15.2%
Annual Circulation Rates by Library TypeAnnual Circulation Rates by Library Type
ARLs Universities Colleges 2yr Colleges Depositories0.00
0.04
0.08
0.12
0.16
Usage DistributionUsage Distribution
100 1,000 10,000 100,000 1,000,0000%
20%
40%
60%
80%
100%
Number of Manifestations
An
nu
al C
ircu
lati
on
455,000
6.5%
Subject Distribution of ItemsSubject Distribution of Items
Arts & Recreation; 8.0%
Business & Econom-ics; 8.2%
History & Geog-raphy; 13.7%
Language & Litera-ture, 21.2%
Science & Tech-nology; 15.1%
Social Science; 22.1%
Medicine; 4.2%
Law; 7.4%
Annual Circulation RatesAnnual Circulation Rates
Arts & Recreation
Business & Economics
History & Geography
Language & Literature
Science & Technology
Social Science Medicine Law0.00
0.05
0.10
0.15
0.20
Duplication RatesDuplication Rates
Arts & Recreation
Business & Economics
History & Geography
Language & Literature
Science & Technology
Social Science
Medicine Law0
3
6
9
Duplication RateDuplication Rate
Publication Date
Ave
rag
e N
o. o
f C
op
ies
4.5
Non-English CollectionsNon-English Collections
German; 26.5%
French; 22.0%
Spanish; 13.5%
Russian, 7.7%
Chinese; 4.3%
Italian; 4.6%
Japanese; 3.1%
Other; 18.3%
Relative Usage by LanguageRelative Usage by Language
German French Spanish Russian Chinese Italian Japanese Other0.00
0.10
0.20
0.30
0.40
0.50
0.60
Non-English Percent of CollectionNon-English Percent of Collection
1900 1915 1930 1945 1960 1975 1990 20050%
5%
10%
15%
20%
Relative Use of Non-English Books by Publication DateRelative Use of Non-English Books by Publication Date
1900 1915 1930 1945 1960 1975 1990 20050%
20%
40%
60%
80%
Relative Non-English Language Use by Library TypeRelative Non-English Language Use by Library Type
ARLs Universities Colleges Depositories0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Non-English Distribution by SubjectNon-English Distribution by Subject
Arts & Recreation;
11.3%Business & Economics;
3.8%
History & Geog-raphy; 10.7%Language &
Literature; 20.1%
Science & Technology;
3.3%
Social Sci-ence; 6.2%
Medicine; 1.1% Law; 1.4%
Relative Usage of Non-English Books by SubjectRelative Usage of Non-English Books by Subject
Arts & Recreation
Business & Economics
History & Geography
Language & Literature
Science & Technology
Social Science
Medicine Law
-5.0%
0.0%
5.0%
10.0%
15.0%
20.0%
25.0%
30.0%
35.0%
Project Websitehttp://www.oclc.org/research/activities/ohiolink/collections.htm
Project Websitehttp://www.oclc.org/research/activities/ohiolink/collections.htm
*
†
ConclusionsConclusions
Limited use of non-English materials,
Unique resources widely distributed,
Circulation rates vary greatly by subject, institution, …
Collectively duplication level are high.
Next Steps
Analysis is ongoing,
What information is helpful; what isn’t?
What did we get wrong?
What did we miss?
Sharing of the data.