OAI User Services Kat Hagedorn, UM University of Michigan 11/10/2005.

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Presentation transcript:

OAI User Services Kat Hagedorn, UM University of Michigan 11/10/2005

Ready, get set,…  You have your metadata ready…  You have your tools for uploading…  You’re officially a data provider…  So, how does the metadata get used once it’s available through OAI?

OAIster  Contains “all” OAI records  collects only records that point to digital objects  but does harvest all data providers    549 institutions; almost 6 million records  37% US, 63% international  16% eprints, 11% DSpace, 4% ContentDM, 3% DigitalCommons

MODS Portal  DLF members only (development is part of DLF IMLS grant)  MODS metadata records only    4 institutions (LoC, Indiana, OCLC, Univ of Chicago)  Over 330K records (mostly LoC)

DLF Portal  Like the MODS portal, but not specific to MODS   idx?c=imls;page=simple  Simple DC records  43 institutions; over 880K records

Other harvesters/portals  Format-specific, ex. Sheet Music Portal    Country-specific, ex. Cyberthèses    Software-specific, ex. Eprints.org, PKP    

UM system  First three portals all built at UM  Developed a system for  harvesting records (DC, now also MODS)  transforming/normalizing them  ingesting them into DLXS Bibliographic Class  search and display of records  Use DLXS: digital library creation software  Built our own harvester (in perl)

System design UM harvester Record storage XSLT transformation tool BibClass indexes OAI-enabled DC records Non-OAI- enabled DC records XSL stylesheets (per source type) Search interface (XPAT)

Your data in our system  MODS  DLXS BibClass  before…

Your data in our system  MODS  DLXS BibClass  during, phase one…

Your data in our system  MODS  DLXS BibClass  during, phase two…

Your data in our system  MODS  DLXS BibClass  after…

Your data in our system  MODS  DLXS BibClass  display…

Evidence of use  Articles, both scholarly and otherwise  Users write about it on blogs  Data providers care enough to complain  Data providers care enough to complain  User stats  for OAIster, regularly in 18-19K+ hits/day range  hundreds of thousands of hits/day on Yahoo!

Pitfalls…  Complex data gets “squashed” into simpler, flatter bibliographic data format  Especially for MODS  Working on appropriate ingest into Bibliographic Class so complex MODS elements are better reflected

More pitfalls…  Don’t know who users are  Tested 3 years ago, for interface issues  Need to test functionality with current grant’s Scholar’s Panel, end-users, and…  Current and potential data providers, such as yourselves

Next steps  Lots of things planned for all portals…  MODS/MARC integration  Thumbnail grabber: include thumbnails in results, as in CIC Portal  Date normalization  Make metadata downloadable from portal, and not just as DC or native XML  Clustering for better search/browse

CIC Portal  Over to Sarah… (no Caesar jokes this time!)

Questions  Kat Hagedorn   University of Michigan  Digital Library Production Service   