Presentation at Microsoft eScience Workshop at Johns Hopkins in October 2006

1. Open Archives Initiative Object Reuse and Exchange Infrastructure to Support New Models of Scholarly Publication Carl Lagoze Information Science Cornell University [email_address]

2. This is a talk about plumbing….

3. …motivated by exciting final results

12. Providing the fabric for an Information Layer Over Core Resources

19. Augmenting interoperability across Repositories DSpace Fedora NIH NVO arXiv Nature Individual Data Models and Services Shared Data Model and Services

21. The Challenge: Keeping it Simple and Sufficiently Functional Web Crawling search engines Metadata Dublin Core Metadata Harvesting OAI-PMH Grid Protocols and APIs Overhead Functionality

22. Building Block I - Repositories Networked system that provides services pertaining to a managed collection of digital objects. Institutional repositories, online journals, dataset stores, learning objects, etc.

25. Augmenting interoperability across Repositories DSpace Fedora aDORe ePrints arXiv Nature Individual Data Models and Services m Obtain Harvest Put

28. Basis for a Network of Linked Digital Objects

30. Obtain interface : a Repository interface that supports the request of services pertaining to individual Digital Objects (including their component Datastreams ). The core service is the request of a Surrogate for a Digital Object . Building Block V: Common Services and APIs Harvest interface : a Repository interface that exposes Surrogates for incremental collecting/harvesting. Put interface : a Repository interface that supports submission of one or more Surrogates into the Repository , thereby facilitating the addition of Digital Objects to the collection of the Repository . Obtain Harvest Put

31. Surrogate is at the core of the value chain Lineage Lineage id id id Obtain Obtain Put Obtain recombine & add value providerInfo providerInfo

32. Repo1 Put 1 Harvest 1 Obtain 1 Obtain Harvest Put Repo2 Obtain Harvest Put 2 Harvest 2 Obtain 2 Put service

34. Questions/Comments?