It's not secret! We want to be as open as possible - and it's in the OSS version if you want to try it out.
The technical details are best explained by the authors of the original paper [1]. We weren't smart enough to come up with it on our own and can't take credit for that haha
Sorry for the late reply! I'd probably have to dig pretty deep into my browser history, but we did some searching around, and largely looked for some benchmark papers to get an overview and from there could easily branch out to different implementations (from the citations).
Generally pretty good way to approach research papers in a new field I recall being taught, there's always some sort of "landscape overview" paper being published that can help distill down the SoTA and you can just follow the references.
The technical details are best explained by the authors of the original paper [1]. We weren't smart enough to come up with it on our own and can't take credit for that haha
[1] http://jiemingzhu.github.io/pub/pjhe_icws2017.pdf