the openurl framework collaborative acquisition of content eric f. van de velde, ph.d. director of...

The OpenURL Framework

Collaborative Acquisition of Content

Eric F. Van de Velde, Ph.D.Director of Library Information Technology, Caltech

[email protected]

June 23-25, 2003Washington, DC

Outline:The OpenURL Framework

Static Linking

SFXSFX

The OpenURL FrameworkThe OpenURL Framework

Collaborative Acquisition of Collaborative Acquisition of ContentContent

Jan. 17th, 2002To: [email protected]

Subject: small problem reaching elsevier science journals through NCBI

Hello,

This is likely a problem with NCBI […], but I thought you would know better. I am trying to download a journal article linked by the ncbi website... go here:

http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11255015&dopt=Abstract

next: click on the "elsevier science. Full text article" button.

...but the link doesn't recognize my caltech IP , and it asks for a username and password. I can, however, manually go to the elsevier webpage and grab my article (so its not a pressing issue, just an annoyance)

Is there something I can do […] to bypass this login page?

-thank you

Jan. 17th, 2002From: [email protected]

Subject: RE: small problem reaching elsevier science journals through NCBI

[…] Thank you for letting us know. Unfortunately we can't solve this particular problem, at least not in the near term.

The publisher's icon appears in the PubMed record for articles in journals for which publishers have provided full-text links to PubMed. This happens […] whether or not Caltech has site-licensed online access for the journal. Caltech […] has not yet been able to negotiate a cost-effective site license for Elsevier's Science Direct product […], although we continue to try.

For many Elsevier journals […], Elsevier provides us at no extra cost what they call Web Editions […] Again unfortunately, there's no way to get […] Science Direct icons in PubMed to link to our Web Editions access, so manual navigation to the desired article is necessary […]

Daniel Taylor, Technical Reference Librarian (Biology)

Static Linking

Third-Party Database does not know: Local license portfolio Location of appropriate copy

Dead-end linksNo Services Example: Document Delivery or

Interlibrary Loan


Static LinkingStatic Linking

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SFX: Acknowledgments

Developed by: H. Van de Sompel (U. of Ghent/Los Alamos

NL) P. Hochstenbach (U. of Ghent/Los Alamos

NL)

Distributed by Ex Libris (USA), Inc.Implemented at Caltech by:

B. Coles (software installation and maintenance)

J. McDonald (database maintenance)

SFX: How does it work?

1. Transport description to SFX resolver.

http://sfx.caltech.edu:8088/caltech?genre=article&atitle=On%20the%20relation%20between%20cavity-dressed%20states%2C%20Floquet%20states%2C%20RWA%2C%20and%20semiclassical%20models&title=J%20PHYS%20A%20MATH%20GEN&issn=0305-4470&date=1997&volume=30&spage=7193&epage=7215&aulast=Guerin&auinit=S


1. Script:Draws the button.

Gets the resolver URL.

Constructs HTTP GET/POST command.

2. Transport description to the SFX resolver…By clicking on the button.

SFXButton(“genre=article&atitle=On%20the%20relation%20between%20cavity-dressed%20states%2C%20Floquet%20states%2C%20RWA%2C%20and%20semiclassical%20models&title=J%20PHYS%20A%20MATH%20GEN&issn=0305-4470&date=1997&volume=30&spage=7193&epage=7215&aulast=Guerin&auinit=S”)


3. SFX-resolver database transforms description into list of potential services.

4. Menu of services is displayed.5. User clicks on one or more

services.

SFX: The Resolver Database

Links Citations to ServicesPossible Services: Full text Abstract Table of contents Document delivery and interlibrary loan Web Search Catalog Search …

SFX: Lessons Learned

Extended Linking Services give us: Multiple links Context-sensitive links produced by

user-specific resolver Persistence:

Embrace DOI† Local link management

Potential other services

†Open Linking in the Scholarly Information Environment Using the OpenURL Framework, H. Van de Sompel and O. Beit-Arie, D-Lib Magazine, Vol. 1, Nr. 3, Mar. ’01.

Other Resolvers1Cate, jake.openly.com, and link.openly.com [Openly Informatics, Inc.]

LinkFinderPlus [Endeavor Information Systems, Inc.]

Open Linking Technology [Fretwell-Downing, Inc.]

OpenResolver (GNU GPL) [Andy Powell, UKOLN]

KDB Linking System [KINS]



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Feb. 2001: NISO Committee AX formedJune 2001: First meetingFeb. 2003: Fifth and (thus far) last meetingApril 15th, 2003: Public CommentsMay 15th -- Nov. 1st, 2003: Trial UseDec. 2003: Submit to NISO for ballot

Subscribe to the OpenURL listserv at:

http://library.caltech.edu/OpenURL

OpenURL Standardization

The OpenURL Framework (Version 1.0)

An OpenURL is an HTTP(S) GET/POST based transportation mechanism for ContextObjects.A ContextObject is a construct that describes: One Referent Zero or more other entities that define the

context in which the reference to the referent occurs or in which the transportation of metadata takes place.

ContextObject

Structure: up to 6 entities Referent (item, subject, article) Referrer (service building the ContextObject) Resolver (service component – link server) Requester (user) Service-Type (type of resolution) Referring-Entity (citing article)

Entities described by up to 4 kinds of descriptors: Id By-Value By-Reference Private-Data

ContextObject: Examples

Referent described by an Id Journal article: Digital Object Identifier Journal: ISSN Book: ISBN


Referent described by Metadata-description Journal article: Journal name, Journal

ISSN, Article title, Author name, Volume, Issue, Page numbers

Technical report: Corporate name, Author name, Report title, Report number


Referent described By-Reference Journal article: “Dublin Core” and a

pointer to a Dublin Core description of the article

Book: “MARC” and a pointer to a MARC description of the book

OpenURL: Why standardize?

Lower barrier for information providers Make it easy to provide OpenURLs

Encourage adoption beyond “Scholarly Information Societies”Create a market in resolvers



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Collaborative Acquisition of Collaborative Acquisition of ContentContent A Speculative ProposalA Speculative Proposal

Collaborative Acquisition

Valuable Information is Expensive Out of reach to many

Approaches to increase availability Make information cheaper:

Open Archives/Access Initiative Find Information Sponsors


Develop Network of Information Sponsors: National Libraries Governments Private Foundations International Organizations …


Each Organization decides Target group of beneficiaries, for

example: Researchers in India, Africa,… High-school students

Information to sponsor, for example: Medical research literature Space science

Each Organization negotiates own set of Access Licenses with Publishers


Each Information Sponsor Contributes relevant details of its Access

Licenses to a shared database

OpenURL Resolvers use the database Find least expensive method of accessing

particular information for a particular user Note: Importance of federated

authentication (Shibboleth)

Conclusion

This proposal may be too far out, but…It shows what OpenURL can do: Targeted, narrowly focused

information Best source of information Highly individualized information Context-sensitive information

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