a tale of two consortia
TRANSCRIPT
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ATaleofTwoConsortia
Rogan Hamby
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Feelfreetointerrupt.
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SelectedReading
"TheConsortial EffectinDetail:TheSCLENDSExperience"
byRobertMolyneux &RoganHambyLibraryandBookTradeAnnual,
57thEdition,2012
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DataCaveats
ThedatafrombothconsortiumsisfromtheirstartsuntiltheendofJuly2015.
Dataisaggregatedbyowner,libraryandtransactionsbutthereisnocopy,bibliographicoruserleveldatathatwouldhelpanswersomeofthelongtailquestions.
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TheConsortia
NCCardinal
SCLENDS
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TwoConsortia- Similarities
wellestablished2011/2009publicw/astatelibrary
similarmixorurbanandruralsimilareconomicdiversity
similarculturalandregionalinfluencesbothareresourcesharing
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TwoConsortia- Similarities
longerperiodofconstantmembership
moremunicipalmore
regionals
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CopyrightbyPuck,usedunderCCAttribution License2.5
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Ididremovethestandarddeviants.
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CirculationsinDataSet
45,629,855Circulations
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
Jun-09
Aug-09
Oct-09
Dec-09
Feb-10
Apr-1
0
Jun-10
Aug-10
Oct-10
Dec-10
Feb-11
Apr-1
1
Jun-11
Aug-11
Oct-11
Dec-11
Feb-12
Apr-1
2
Jun-12
Aug-12
Oct-12
Dec-12
Feb-13
Apr-1
3
Jun-13
Aug-13
Oct-13
Dec-13
Feb-14
Apr-1
4
Jun-14
Aug-14
Oct-14
Dec-14
Feb-15
Apr-1
5
Jun-15
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HoldsinDataSet
3,526,910holds
0
2000
4000
6000
8000
10000
12000
14000
16000
Jun-09
Aug-09
Oct-09
Dec-09
Feb-10
Apr-1
0
Jun-10
Aug-10
Oct-10
Dec-10
Feb-11
Apr-1
1
Jun-11
Aug-11
Oct-11
Dec-11
Feb-12
Apr-1
2
Jun-12
Aug-12
Oct-12
Dec-12
Feb-13
Apr-1
3
Jun-13
Aug-13
Oct-13
Dec-13
Feb-14
Apr-1
4
Jun-14
Aug-14
Oct-14
Dec-14
Feb-15
Apr-1
5
Jun-15
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TerminologyofHolds
LocalHolds– withinsystem
ICLs– IntraConsortiaLoans
ILLs– InterLibraryLoans(extraconsortia)
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ICLs2009– 2015AllLibraries
0
10000
20000
30000
40000
50000
60000
2009 2010 2011 2012 2013 2014 2015
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ICLs2009– 2015SmallerLibraries
0
500
1000
1500
2000
2500
3000
3500
4000
4500
1 2 3 4 5 6 7
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Question1
IstherealongtermpatterntoICLs?
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PercentageofHoldsOverTime
0.00
1000.00
2000.00
3000.00
4000.00
5000.00
6000.00
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0.00
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73
June2009- July 2015AverageICLsasPercentages
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Question2
Dolibrarieshaveademandthresholdordoesitscalewithavailablematerials?CanwesaythereisapointthatICLswillmaxout?Wheyeven
askthis?
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StableSample
• SCLENDSLibrariesthathavebeenlivesinceDecember2009
• 9insample• StateLibraryexcludedbecauseIcan’tmeaningfullyapplycriterialikepovertyandpopulationscorestoitwithit’sspecialuserbase
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0.00
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73
SCLENDSICLsasPercentageswithGoLives
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73
SCLENDSLibrariesasofDec2009OnlyOnward
282%
247%
226%235%
212%
166%
vs414%Forall
vs349%Forall
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NCCardinallibrariesdidnothaveasimilargolivepattern.Itwas16monthsfortheirfirstnine
systemstogolive.Alternativelytheyhad4librariesgoliveinsixmonth.Icouldhave
chosenthefirstsinglegolivebutthatwouldhaveahighvariance.Isplitthedifferencebychoosingthefirst7libraries,whichwentlive
over10months.
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0.00
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73
OriginalGoLiveLibrary’s RiseofICLsaspercentagesmonthtomonth
maxsclends 350%
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73
NCCardinalLibrariesasofMarch2012w/PercentageICLsvsLaterGoLivesICLsasPercentages
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0.00
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73
PercentagesofHoldsMonthtoMonth
SCLENDS NCCardinal
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1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374
GrowthofICLsofEarlyLibraries
SCLENDS NCCardinal
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Resultisthatconsortiamagnifythedepthofcollectionsandhaveasignificantimpactbutitisinconclusiveifthereisapredictablesaturationpoint.SCdatasuggestsasaturationpointmet
whileNCdatadoesnot.
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Isthereapopulationdifferencethatwouldexplainthesediscrepancies?
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Population
58,192
101,374
mean
range
112,618
230468
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TwoSmallerLibrariesFromEarlyAdopters
Smallestinearlyadoptersets.Popsof41,434and46,125.
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69
NCCardinalvsSCLENDSSingleEarlyAdopter
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TwoLargeLibraries
Popsof245,346and250,539.
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0
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73
SClargelibrarypercentofholds vsNClargelibrarypercentofholds
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Thistellsusweshouldprobablydigdeepercontrollingforpopulation.
Smalllibrarieshavegreaterpotentialforvariationbutherewesawitwiththelarge
libraries.
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Inothervariables…
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IndexMundi’s2009-2013indexofpopulationbelowpovertyindex
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Itwouldbecriticalthatweadditionallycontrolforpatron,itemandbibliographicleveldatato
betteranswerthesequestions.
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Addingon…ifIcan
FromCirc andHoldsreports:PatronID,ItemID
FromAsset/BibTables:ItemID,BibID,020/022/024,normalizedtitle,author,TCN
SCLENDS,NCCardinal,GAPINES
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