http://www.sherpa.ac.uk/

OpenDOAR and ROAR

RSP Services Day, Nottingham, 23rd Apr.2008

Peter MillingtonSHERPA Technical Development Officer

SHERPA, University of Nottinghampeter.millington@nottingham.ac.uk

http://www.sherpa.ac.uk/

Outline

• Overview of open access repository lists– What are they used for?

• Open access repositories– The context

• OpenDOAR’s facilities

• ROAR’s facilities

• Searching the content of OA repositories

• Mashing up OpenDOAR and ROAR

http://www.sherpa.ac.uk/

OpenDOAR & ROAR, etc.• OpenDOAR – 1128 records

– Directory of Open Access Repositories

– SHERPA, University of Nottingham

• ROAR – 1041 records

– Registry of Open Access Repositories

– EPrints.org, University of Southampton

• Other OA Repository lists– OAIster – 947 records

– OAI Registered Data Providers – 794 records

• DOAJ - Directory of Open Access Journals

http://www.sherpa.ac.uk/

Open Access Repositories Worldwide

http://www.sherpa.ac.uk/

Growth of OpenDOAR Database

http://www.sherpa.ac.uk/

Growth of Repository Content

http://www.sherpa.ac.uk/

Uses of OpenDOAR & ROAR• Finding open access repositories• Source lists for harvesters

– Search services – e.g. Intute RS– Data mining

• Searching the content of OA repositories• Analysis of repositories’ features• Statistics for Open Access advocacy• Funding policy decisions• Third party mash-ups – e.g. Repository66

http://www.sherpa.ac.uk/

http://www.sherpa.ac.uk/

OpenDOAR Facilities• Listing of OA repositories geographically• Searching for OA repositories

– By keyword, language, country, software, etc.

• Charting statistics– No. of repositories – 16 headings

• Searching the content of OA repositories– Using Google’s Custom Search Engine

• Tools– API, Policies Tool

http://www.sherpa.ac.uk/

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ROAR Facilities

• Searching for OA repositories– By keyword, country, software, content type

• Thumbnail images of home pages

• Statistical charts– Growth of repository content– Content type statistics

• Searching the content of OA repositories– Using Google’s Custom Search Engine

http://www.sherpa.ac.uk/

ROAR Repository Growth Chart

http://www.sherpa.ac.uk/

ROAR Pie Chart

http://www.sherpa.ac.uk/

http://www.sherpa.ac.uk/

OpenDOAR & ROAR Compared

OpenDOAR ROAR

Search by keyword Search by keyword

Filter by: Repository type, Software, Country, Language, Content type, Subject area

Filter by: Repository type, Software, Country

Analytical statistics Content growth statistics

API, Policies Tool Celestial - Harvesting analytics database

http://www.sherpa.ac.uk/

Collection ApproachesOpenDOAR ROAR

Repositories only Repositories

Some open access journals

Must have some open access full texts

Allows metadata-only and gated access items

Suggestions & Proactive discovery

Self-registration only

Manual validation Taken on trust + some automated validation

http://www.sherpa.ac.uk/

Content Searching• OpenDOAR & ROAR use Google CSE• Uses Google’s indexes & technology

– Just searches URLs listed in the database

• Focussed search results– High probability of open access full text items– Unlike Google Scholar & Google per se

• Benefits for…– Under-resourced institutions– Unaffiliated & off-campus researchers

http://www.sherpa.ac.uk/

Repository66 Mash-up• Developed by Stuart Lewis, Aberystwyth• Combining…

– ROAR coordinates and data– OpenDOAR data via the API– Google Maps / Google Earth

• Interactive worldwide repository map– Repository software used– Repository size– Descriptive data

http://www.sherpa.ac.uk/

http://www.sherpa.ac.uk/

Any questions?

• OpenDOAR– http://www.opendoar.org/

• ROAR– http://roar.eprints.org/

• Repository66– http://www.repository66.org/