The CiteSeerxPSU collection
Orgin
As stated on the CiteSeerX “About” page
CiteSeerx is a scientific literature digital library and search engine that focuses primarily on the literature in computer and information science. CiteSeerx aims to improve the dissemination of scientific literature and to provide improvements in functionality, usability, availability, cost, comprehensiveness, efficiency, and timeliness in the access of scientific and scholarly knowledge.
Status
We get the data from the OAI interface, roughly once a month.