Editing CiteSeerX (section)

== Current features ==

=== Automated information extraction ===
CiteSeer<sup>X</sup> uses automated [[information extraction]] tools, usually built on machine learning methods such ParsCit, to extract scholarly document metadata such as title, authors, abstract, citations, etc. As such, there are sometime errors in authors and titles. Other academic search engines have similar errors.

=== Focused crawling ===
CiteSeer<sup>X</sup> crawls publicly available scholarly documents primarily from author webpages and other open resources, and does not have access to publisher metadata. As such, citation counts in CiteSeer<sup>X</sup> are usually less than those in Google Scholar and Microsoft Academic Search who have access to publisher metadata.

=== Usage ===
CiteSeer<sup>X</sup> has nearly one million users worldwide based on unique IP addresses and has millions of hits daily. Annual downloads of document PDFs were nearly 200 million for 2015.

=== Data ===
CiteSeer<sup>X</sup> data is regularly shared under a [[Creative Commons license|Creative Commons BY-NC-SA license]] with researchers worldwide and has been and is used in many experiments and competitions.

Thanks to its [[OAI-PMH]] endpoint,<ref>{{cite web |last1=Hirst |first1=Tony |date=2011-12-08 |title=Using OAI-PMH as a Single Record Level Query Interface to Citeseer |url=https://blog.ouseful.info/2011/12/08/using-oai-pmh-as-a-query-interface-to-citeseer/ |access-date=2020-04-25 |archive-date=2020-11-24 |archive-url=https://web.archive.org/web/20201124112703/https://blog.ouseful.info/2011/12/08/using-oai-pmh-as-a-query-interface-to-citeseer/ |url-status=live }}</ref> CiteSeerX is an [[open archive]] and its content is indexed like an [[institutional repository]] in [[academic search engines]], for instance [[BASE (search engine)|BASE]] and [[Unpaywall]] consumers.