We have some older projects that we've debuted in the past that have gone back into development, like Remixanator and Judganator, which made heavy use of some proprietary algorithms developed by OCR New Dehli, a small coding subsidiary of OC ReMix located in India.
In order to efficiently tag and classify all of the remixes on the site, they forked and reworked the code (JavaScript and COBOL) they had written for the Algorithmic Synthesis System (used in Remixanator and later Judganator) and adapted it to an analysis tool used to determine genres.
Obviously there will be some errors, so if you see any remixes that don't necessarily fit with what came out of the ASS, let us know. We'll be setting up a community review in the next couple of days to fix issues.