Search, access and impact: Web citation services

Tim Brody

Intelligence, Agents, Multimedia Group

University of Southampton

25/01/2005 University of Southampton

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 EnginesNavigation Tools

Analysis & Assessment

Citebase

Citeseer

Google+

Scholar

BM

C

arXiv.org

OA

I-PM

H T

ransport

OA

Ister

Scirus

EP

rints

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Search

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Search

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Search

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Search

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Citebase Search

OAI MetadataRepositories

RepositoryFull-Texts

Dublin CoreHarvest &

Normalisation

Full-textretrieval,

conversion& parsing

CitationParsing

CitationDatabase

Refer.Database

CitationLinking

XapianSearchIndexer

AnalysisTools

wwwInterface

OAIExport

MetadataDatabase

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Search Engine

• Xapian (free search API) boolean text search + post-sorting

• Rank-by:– Boolean search score– Citations (Paper, Author)– Dates (Repository datestamps…)– Downloads [UK arXiv only]– ‘Hub/Authority’ (Google PageRank?)

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www Interface

• Metadata display– Getting UTF-8 right is tough

• Full-text links (+limited PDF-linking)

• Navigation by author, citation, co-citation

• Citation/Download history

• Citebase Citations/Downloads

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Analysis Tools

• Papers over time/by field

• Citations over time (by field)

• Citation “latency” (read-write-cite latency)

• Usage (downloads) by country

• Correlation (“predictiveness”) between downloads/cites

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OAI Export

• Dublin Core + Structured Citations– DC-Cite– OpenURLs– … ?

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Citebase Usage

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Perspective of a Service

• IRs serve an institutional need

• Services can be built on IRs to serve community’s needs

• Communities need:– Access to the primary literature *full-text*– Means of discovery (is Google good enough?)

– Development of new services & ideas … competition at the point of use

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Content

• Citebase Search– http://citebase.eprints.org/

• http://scholar.google.com/, http://www.citeseer.com/, http://www.oaister.com/