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(Contact Info: larry at larryblakeley dot com)

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03/12/04 - CiteSeer.IST is a freely available version of CiteSeer at the School of Information Sciences and Technology at Penn State University. It has most of the documents in the original CiteSeer and updates will start soon. New services such as OAI compatibility are now available. Please check this page for new service announcements.

Due to unexpected usage CiteSeer.IST is not offering the desired level of service. We hope to change that with upgrades in the next couple of months.

CiteSeer is a scientific literature digital library that aims to improve the dissemination and feedback of scientific literature, and to provide improvements in functionality, usability, availability, cost, comprehensiveness, efficiency, and timeliness.

Rather than creating just another digital library, CiteSeer provides algorithms, techniques, and software that can be used in other digital libraries. CiteSeer indexes Postscript and PDF research articles on the Web, and provides the following features.

Summary of CiteSeer

Autonomous Citation Indexing (ACI)

CiteSeer uses ACI to autonomously create a citation index that can be used for literature search and evaluation. Compared to traditional citation indices, ACI provides improvements in cost, availability, comprehensiveness, efficiency, and timeliness. For more information, see Digital Libraries and Autonomous Citation Indexing

All cited documents

CiteSeer computes citation statistics and related documents for all articles cited in the database, not just the indexed articles.

Reference linking

As with many online publishers, CiteSeer allows browsing the database using citation links.

Citation context

CiteSeer can show the context of citations to a given paper, allowing a researcher to quickly and easily see what other researchers have to say about an article of interest.

Awareness and tracking

CiteSeer provides automatic notification of new citations to given papers, and new papers matching a user profile.

Related documents

CiteSeer locates related documents using citation and word based measures and displays an active and continuously updated bibliography for each document.

Similar documents

CiteSeer shows the percentage of matching sentences between documents.

Full-text indexing

CiteSeer indexes the full-text of the entire articles and citations. Full boolean, phrase and proximity search is supported.

Query-sensitive summaries

CiteSeer provides the context of how query terms are used in articles instead of a generic summary, improving the efficiency of search.

Citation graph analysis

CiteSeer analyzes the graph of citations, e.g. to provide hubs and authorities ranking (ala Kleinberg).

Page images

CiteSeer allows quick and easy viewing of page images.


CiteSeer is continuously updated 24 hours a day.

Powerful search

e.g. CiteSeer allows using author initials to narrow a citation search.

Autonomous location of articles

CiteSeer uses search engines and crawling to efficiently locate papers on the Web.

Freely available

The full source code of CiteSeer is available at no cost for non-commercial use.