What must be in the pdf document that is required for every submission?
Ideally this document is a paper describing the system that has been used to generate the results in such detail that others can reimplement it, in other words a standard scientific publication or technical report about your work. If you have published a paper describing your system, please upload that paper or, in case you are not allowed to have the paper in its original form downloadable from this site, upload a short description of it and a reference to the paper. If you have not yet written a detailed paper, or have submitted this for publication and do not want it to become publicly available, or if you have other reasons why you want to withhold detailed information about your method, please indicate the reasons for this in the pdf file you submit and describe the system only briefly.