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Citation Analysis for the Free, Online Literature
 

Citation Analysis for the Free, Online Literature

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Citation Analysis for the Free, Online Literature

Citation Analysis for the Free, Online Literature

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  • Hello and thank you to the organisers for inviting me to speak here today.

Citation Analysis for the Free, Online Literature Citation Analysis for the Free, Online Literature Presentation Transcript

  • 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
      • Search and Navigation Service
    • Web Impact as a predictor of Citation Impact
  • Institutional Archives Registry
  •  
  • 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?)
  • 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
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  • Services for Open Access Literature Self-Archived Full-texts (Pre/Post-prints) Open Access Publishing Citation Analysis/Linking Services (Citebase / Citeseer / OpenURL / DOI) Version Linking Services Search Engines Navigation Tools Analysis & Assessment Citebase Citeseer Google BMC arXiv.org OAI-PMH Transport OAIster Scirus n.b. Scirus/OAIster aren’t citation-analysis aware yet, Google indexes Citeseer. Not an exhaustive list …
  • 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)
  • 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.)
  • Citebase Search
  • 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
  • Citebase Search
  •  
  • Citebase Search: Navigation by Citation Links Current Article Co-cited Article with reference list Reference link Future Past Related
  •  
  • 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
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  • 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
  • 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)
  • 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>