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Citation Analysis for the Free, Online Literature

Citation Analysis for the Free, Online Literature. Tim Brody Intelligence, Agents, Multimedia Group University of Southampton. Content. Current services for Open Access Literature Institutional Archives Registry Metadata Harvesting through Celestial Citebase Search Citation Linking

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Citation Analysis for the Free, Online Literature

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  1. Citation Analysis for the Free, Online Literature Tim Brody Intelligence, Agents, Multimedia Group University of Southampton Second Nordic Conference on Scholarly Communication

  2. Content • Current services for Open Access Literature • Institutional Archives Registry • Metadata Harvesting through Celestial • Citebase Search • Citation Linking • Search and Navigation Service • Web Impact as a predictor of Citation Impact Second Nordic Conference on Scholarly Communication

  3. Institutional Archives Registry Second Nordic Conference on Scholarly Communication

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  5. Sites in the IAR • Things we want to know: • GNU EPrints sites • Other research collections (Other Archives, Open Journals) • BOAI 1. vs BOAI 2. • A submission form consisting of: • URL, Name, OAI URL, Country, ‘type’, full-text, software • Can’t (yet) track full-texts • (Create a master-list so archives only register-once?) Second Nordic Conference on Scholarly Communication

  6. Celestial • Designed to: • Be an abstraction over OAI-PMH versions • Caching OAI metadata records • Technological questions: • How big can the OAI-PMH go (ok for 5 million records so far) • How reliable are OAI-PMH implementations • Feeds Citebase, IAR, some external users Second Nordic Conference on Scholarly Communication

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  9. Services for Open Access Literature Scirus OAIster Google Search Engines Navigation Tools Analysis & Assessment BMC Citeseer Citebase Citation Analysis/Linking Services (Citebase / Citeseer / OpenURL / DOI) Version Linking Services OAI-PMH Transport arXiv.org Self-Archived Full-texts (Pre/Post-prints) Open Access Publishing n.b. Scirus/OAIster aren’t citation-analysis aware yet, Google indexes Citeseer. Not an exhaustive list … Second Nordic Conference on Scholarly Communication

  10. Citation Analysis & Linking • A citation is a reference from one work to another [as a hyperlink: a citation link] • Citation analysis uses citation relationships to analyse patterns in research • As a graph a work (paper, book etc.) is a vertex and a citation an edge • ‘Bibliometrics’ • (study of patterns in literature) Second Nordic Conference on Scholarly Communication

  11. Digitometric/Infometric Analysis • Bibliometrics for the online age • Couple citation analysis with Web analysis • (how many times has x been accessed?) • Similar to readership studies, but easier to survey and more comprehensive • (though subject to the same problems of copies being re-distributed, multiple accesses etc.) Second Nordic Conference on Scholarly Communication

  12. Citebase Search Second Nordic Conference on Scholarly Communication

  13. Citation Linking • Retrieve and cache full-texts • LaTeX, PDF, XML • Extract reference list • Extract individual references • Parse references into components • Author, year, title, journal, volume, pagination • Store in structured database Second Nordic Conference on Scholarly Communication

  14. Citebase Search Second Nordic Conference on Scholarly Communication

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  16. Citebase Search:Navigation by Citation Links Article withreference list Future Referencelink Related Current Article Co-cited Past Second Nordic Conference on Scholarly Communication

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  18. Predicting Citation Impact • The Web gives us access to new metrics • Download/access frequency • Can early-day ‘download’ frequency give an indication of longer-term citation frequency? • (Web logs from the UK arXiv.org mirror, Citation data from Citebase Search) • Pearson correlation after 6 months of web logs = 0.42 for the High Energy Physics sub-arXiv Second Nordic Conference on Scholarly Communication

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  24. Assessing Research(ers) • Citation Impact • By-Paper, Author, [Journal, Institution] • Web Impact • Predictor of citation-impact, combine with citation-impact • Search Engines • More detailed research assessment Second Nordic Conference on Scholarly Communication

  25. Comparing Online/Offline Impact • Using ISI CD-ROM data • Use Web crawlers to find ‘online’ articles • Compare citation impact of online and offline articles • By discipline, by journal, by author? • Initial results for Physics show 2-3x increase • arXiv.org • Southampton, U. Quebec, Oldenburg (de) Second Nordic Conference on Scholarly Communication

  26. Relevant Web Pages • EPrints – http://www.eprints.org/ • IAR: http://archives.eprints.org/ • Citebase Search • http://citebase.eprints.org/ • Celestial • http://celestial.eprints.org/ • Correlation Generator • http://citebase.eprints.org/analysis/correlation.php • Tim Brody <tdb01r@ecs.soton.ac.uk> Second Nordic Conference on Scholarly Communication

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