OAI and OAIster Kat Hagedorn University of Michigan Libraries October 30, 2006.
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Transcript of OAI and OAIster Kat Hagedorn University of Michigan Libraries October 30, 2006.
OAI and OAIster
Kat HagedornKat Hagedorn
University of Michigan LibrariesUniversity of Michigan Libraries
October 30, 2006October 30, 2006
The oy(ai)ster and the hareThe oy(ai)ster and the hare
Well, if oysters had feet…Well, if oysters had feet…
Other projects move faster (think Google)Other projects move faster (think Google) OAI still building speedOAI still building speed Follows the punctuated equilibrium model…Follows the punctuated equilibrium model…
* © Johnny Hart!
OAIster records over time
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1,000,000
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Jun-02Aug-02Oct-02Dec-02Feb-03Apr-03Jun-03Aug-03Oct-03Dec-03Feb-04Apr-04Jun-04Aug-04Oct-04Dec-04Feb-05Apr-05Jun-05Aug-05Oct-05Dec-05Feb-06
months
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OAIster repositories over time
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Jun-02Aug-02Oct-02Dec-02Feb-03Apr-03Jun-03Aug-03Oct-03Dec-03Feb-04Apr-04Jun-04Aug-04Oct-04Dec-04Feb-05Apr-05Jun-05Aug-05Oct-05Dec-05Feb-06
months
# repositories
Why OAIster?Why OAIster?
And why the silly name?And why the silly name?
Initially, wanted to build the Academic Initially, wanted to build the Academic HotBot (yup, you read that right)HotBot (yup, you read that right)
Essentially, a union catalog of those Essentially, a union catalog of those “objects” that couldn’t easily be spidered“objects” that couldn’t easily be spidered
Currently, have more records that link to Currently, have more records that link to “objects” than there are records in our “objects” than there are records in our OPACOPAC
What does OAIster contain?What does OAIster contain?
Harvest everything availableHarvest everything available except obvious test repositoriesexcept obvious test repositories
Keep nearly everythingKeep nearly everything must have a digital object linkmust have a digital object link must have decent metadatamust have decent metadata must be scholarly or informationalmust be scholarly or informational
For example…For example…
http://memory.loc.gov/mbrs/varsmp/0526.mpgLibrary of Congress Digitized Historical Collections
http://louisdl.louislibraries.org/u?/AAW,22LOUISiana Digital Library (LDL)
Why do (should) people use it?Why do (should) people use it?
It’s big-- over 9.6 millionIt’s big-- over 9.6 million It’s varied-- contains articles, books, images It’s varied-- contains articles, books, images
of artwork, datasets, videos, audios, finding of artwork, datasets, videos, audios, finding aids, manuscriptsaids, manuscripts
It keeps growing-- as long as they keep It keeps growing-- as long as they keep paying my salarypaying my salary
One interface to rule them all?One interface to rule them all?
If you don’t know this…If you don’t know this… www.oaister.orgwww.oaister.org www.oaister.umdl.umich.edu/o/oaisterwww.oaister.umdl.umich.edu/o/oaister
……how do you get to the content?how do you get to the content? We consider part of our mission making this We consider part of our mission making this
metadata as widely available as possible, metadata as widely available as possible, so…so…
SRU interfaceSRU interface
Federated search engines are “it” now--Federated search engines are “it” now--trying to solve problem of how to search trying to solve problem of how to search simultaneouslysimultaneously
Perfect place for OAIsterPerfect place for OAIster Built SRU interface (Z39.50 deemed older Built SRU interface (Z39.50 deemed older
tech at this point)tech at this point) ExLibris built connector for MetaLib toolExLibris built connector for MetaLib tool For example--For example--
OAI: what it is (finally)OAI: what it is (finally)
Stands for Open Archives InitiativeStands for Open Archives Initiative “…develops and promotes interoperability standards
that aim to facilitate the efficient dissemination of content.”
Includes a Protocol for Metadata Harvesting Includes a Protocol for Metadata Harvesting (PMH), i.e., what we use to fill OAIster(PMH), i.e., what we use to fill OAIster
Consists of data providers and service Consists of data providers and service providersproviders
OAI: what it is notOAI: what it is not
OAI ≠ open access OAI ≠ open access “…defining and promoting machine interfaces that
facilitate the availability of content from a variety of providers. Openness does not mean ‘free’ or ‘unlimited’ access to the information repositories that conform to the OAI-PMH.”
However, a large majority of OAIster However, a large majority of OAIster records are available to all and sundryrecords are available to all and sundry
Perfect opportunity-- freely sharing free stuffPerfect opportunity-- freely sharing free stuff
OAIster and open accessOAIster and open access
We harvest a large number of open access We harvest a large number of open access “self-publishing” repositories, e.g.,“self-publishing” repositories, e.g., DSpace: 68DSpace: 68 EPrints: 113EPrints: 113 OJS: 21OJS: 21
Plus green and gold standard peer-reviewed Plus green and gold standard peer-reviewed digital object records from repositories like digital object records from repositories like PLOS and arXivPLOS and arXiv
Onwards…Onwards…
Working on clustering and Working on clustering and classifying metadata so it is classifying metadata so it is more easily searchable and more easily searchable and browseable browseable
And continue to work on best And continue to work on best practices for data providerspractices for data providers
Questions?Questions?
Kat HagedornKat Hagedorn University of Michigan LibrariesUniversity of Michigan Libraries Digital Library Production ServiceDigital Library Production Service www.oaister.orgwww.oaister.org [email protected]@umich.edu