Citation services for institutional repositories: citebase search

1 Citation Services for Institutional Repositories: Citebase Search Tim Brody Intelligence, Agents, Multimedia Group University of Southampton 2 20/10/2005 2 Content • The “Research Literature” – The Open Access Literature • Why Open Access? • Citation Services for IRs – Distributed Archives – Citebase Search • Effect of Open Access 3 20/10/2005 3 The Research Literature • The grey literature – Technical reports – Monographs – Presentations • Royalty literature – Books • Refereed journal corpus 4 20/10/2005 4 The Refereed Journal Literature • Written without the expectation of royalties • Akin to ‘Advertising’ for authors and their work (=maximise use & uptake) • Reviewed for free by peers • Est. 20,000 Peer-reviewed Journals – B.L. archives 60,000 serials • Est. 2,000,000 Articles Annually 5 Refereed “Post-Print” Accepted, Certified, Published by Journal Impact cycle begins: Research is done Researchers write pre-refereeing “Pre-Print” Submitted to Journal Pre-Print reviewed by Peer Experts – “Peer-Review” Pre-Print revised by article’s Authors Researchers can access the Post-Print if their university has a subscription to the Journal 12-18 Months New impact cycles: New research builds on existing research 6 20/10/2005 6 Open Access Literature • Research Archives (“author self-archiving”) – 340,000 arXiv.org – 700,000 citeseer – 1,000s in institutional & other repositories • Open Access Journals – BioMed Central/PLOS/ [DOAJ] • Time-delayed access – PubMed Central –HighWirePress • Personal Web pages 7 20/10/2005 7 Open Access: A Definition • Immediate, free access via the Web to the author give-away peer-reviewed literature 1. Author posted pre-prints, post-prints (“eprints”) linked to journal version 2. Open Access publishing 8 20/10/2005 8 “Skywriting”: All research, accessible to all potential users, anywhere, anytime “ “Skywriting Skywriting” ”: All research, accessible to all potential users, anywhere, any : All research, accessible to all potential users, anywhere, anytime time New impact cycles: New research builds on existing research Researchers can access the Post-Print if their university has a subscription to the Journal Refereed “Post-Print” Accepted, Certified, Published by Journal Impact cycle begins: Research is done Researchers write pre-refereeing “Pre-Print” Submitted to Journal Pre-Print reviewed by Peer Experts – “Peer-Review” Pre-Print revised by article’s Authors Pre-Print selfarchived to University’s Eprint Website Post-Print selfarchived to University’s Eprint Website 12-18 Months New impact cycles: Self-archived research impact is greater (and faster) because access is maximized (and accelerated) 9 20/10/2005 9 Why Open Access? • Maximise research impact through maximised access [evidence of 50-250% more citations] • Efficiency – ADS Est. to provide $250 million benefit to astronomy • Continuous and comprehensive assessment • Periphery benefits – Institutional management – Publicly funded research publicly accessible – Developing World Access – Easier to identify plagiarism (do a Google search!) 16 20/10/2005 16 Citebase Search: Navigation by Citation Links Current Article Co-cited Article with reference list Reference link Future Past Related 17 20/10/2005 17 cites cites 18 20/10/2005 18 Co-cited 19 20/10/2005 19 Related 20 20/10/2005 20 Citebase Search: Usage • 8000 users per-day (“visits”) – 60,000 hits • 350,000 full-text records • 12 million references – Of which 2.7 million linked to full-text • 5 million Web download hits (uk.arXiv.org) 21 20/10/2005 21 OAI-based Infrastructure Data Provider Service Provider (“Harvester”) Data Provider Data Provider XML Records (Dublin Core etc.) 22 20/10/2005 22 Citebase Search Repositories Metadata Harvest (OAI-PMH) Full-text Harvest Meta Database References Database Citation Database Web Interface OAI-PMH Interface Citebase Emailed Web Logs 23 20/10/2005 23 Future Citation Ranking • Citation- and Webusage by: –Article –Authors –Journal • Fan-in/Fan-out type rank – Hub/Authority (Google PageRank) • Co-cites – Latent semantic analysis • [All by time-trends] 24 20/10/2005 24 Citation Indices for OA • Free to access: – Google Scholar – Citeseer – Astrophysics Data Service (NASA ADS) • Subscription: –Scopus –ISI WCI 25 20/10/2005 25 The Effect of Open Access • Correlation of Citation Impact with Web Impact (downloads) • Effect of Open Access on citation behaviour • OA Impact Advantage • (Based on arXiv.org) 32 20/10/2005 32 Conclusions • High impact papers are read more (and this can be measured online) – Web downloads may be an pre-indicator of impact • Faster access leads to reducing Citation Latencies – Hence faster research cycles, higher impact, and more productivity 33 20/10/2005 33 Summary • The Web makes Open Access research literature possible, and hence more effective scholarship • Services compete without holding the literature hostage • OAI allows repositories to concentrate on getting and storing the literature • Citebase Search provides citation navigation for OAI archive(s) – Or anyone else who wants to provide a similar service 34 20/10/2005 34 The Last Slide • Tim Brody [email protected] –http://opcit.eprints.org/ (papers & presentations) • Citebase Search –http://www.citebase.org/ • EPrints.org – (advocacy, answers & software) –http://www.eprints.org/ I am a doctoral student in the Intelligence, Agents, Multimedia Group at the University of Southampton working with digital library systems: Citebase Search, E-Prints UK, TARDIS & OAI. Prof. Stevan Harnad <[email protected]>