Editing CiteSeerX (section)

=== CiteSeer<sup>X</sup> ===
'''CiteSeer<sup>X</sup>''' replaced CiteSeer and all queries to CiteSeer were redirected. CiteSeer<sup>X</sup><ref name="about-page">{{Cite web |title=About CiteSeerX |access-date=2010-05-07 |url=https://citeseerx.ist.psu.edu/about/site |archive-date=2010-07-22 |archive-url=https://web.archive.org/web/20100722162718/https://citeseerx.ist.psu.edu/about/site |url-status=live }}</ref> is a public [[search engine]] and [[digital library]] and [[Disciplinary repository|repository]] for scientific and academic papers, primarily with a focus on [[computer science|computer]] and [[information science]].<ref name="about-page" /> However, recently CiteSeer<sup>X</sup> has been expanding into other scholarly domains such as economics, physics and others. Released in 2008, it was loosely based on the previous CiteSeer search engine and digital library and is built with a new [[Open-source software|open source]] infrastructure, SeerSuite, and new algorithms and their implementations. It was developed by researchers Isaac Councill and C. [[Lee Giles]] at [[Penn State College of Information Sciences and Technology|the College of Information Sciences and Technology]], [[Pennsylvania State University]]. It continues to support the goals outlined by CiteSeer to actively crawl and harvest academic and scientific documents on the public web and to use a citation inquiry by citations and ranking of documents by the impact of citations. Currently, Lee Giles, Prasenjit Mitra, Susan Gauch, Min-Yen Kan, Pradeep Teregowda, Juan Pablo Fernández Ramírez, Pucktada Treeratpituk, Jian Wu, Douglas Jordan, Steve Carman, Jack Carroll, Jim Jansen, and Shuyi Zheng are or have been actively involved in its development. Recently, a table search feature was introduced.<ref>{{Cite web |title=The CiteSeerX Team |url=https://csxstatic.ist.psu.edu:80/about/team |archive-url=https://web.archive.org/web/20180726034438/https://csxstatic.ist.psu.edu/about/team |archive-date=2018-07-26 |publisher=Pennsylvania State University |df=mdy |access-date=2018-05-01 }}</ref> It has been funded by the [[National Science Foundation]], [[NASA]], and [[Microsoft Research]].

CiteSeer<sup>X</sup> continues to be rated as one of the world's top repositories, and was rated number 1 in July 2010.<ref>{{Cite web |title=Ranking Web of World Repositories: Top 800 Repositories |publisher=Cybermetrics Lab |date=July 2010 |url=https://repositories.webometrics.info/top800_rep.asp |access-date=2010-07-24 |archive-url=https://web.archive.org/web/20100724004342/https://repositories.webometrics.info/top800_rep.asp |archive-date=2010-07-24 |df=mdy}}</ref> It currently has over 6 million documents with nearly 6 million unique authors and 120 million citations.{{clarify timeframe|date = June 2023}}

CiteSeer<sup>X</sup> also shares its software, data, databases and metadata with other researchers, currently by [[Amazon S3]] and by [[rsync]].<ref>{{Cite web |title=About CiteSeerX Data |publisher=Pennsylvania State University |access-date=2012-01-25 |url=https://csxstatic.ist.psu.edu/about/data |archive-url=https://web.archive.org/web/20120105193216/https://csxstatic.ist.psu.edu/about/data |archive-date=2012-01-05 }}</ref> Its new modular open source architecture and software (available previously on [[SourceForge]] but now on [[GitHub]]) is built on [[Apache Solr]] and other [[Apache Software Foundation|Apache]] and open source tools, which allows it to be a testbed for new algorithms in document harvesting, ranking, indexing, and information extraction.

CiteSeer<sup>X</sup> caches some PDF files that it has scanned.  As such, each page includes a [[DMCA]] link which can be used to report copyright violations.<ref>For example, {{Cite web |citeseerx=10.1.1.604.4916 |quote="The document with the identifier "10.1.1.604.4916" has been removed due to a DMCA takedown notice. If you believe the removal has been in error, please contact us through the feedback page, along with the identifier mentioned in this page."|title=CiteSeerx – DMCA Notice|url=https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.604.4916 |url-status=deviated |archive-url=https://web.archive.org/web/20220318075713/https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.604.4916|archive-date=2022-03-18 }}</ref>