Description
http://www2016.net/proceedings/proceedings/p263.pdf
Specifcially section 2...
"Table 1 shows the outcome of this process, It is impor-
tant to mention that all validators successfully validate the
JSON Schema test-suite [4]. As we can see, no two valida-
tors behave the same on all inputs, which is clearly not the
desired behaviour. This illustrates the need for a formal
de nition of JSON Schema which will either disallow am-
biguous schemas, or formally specify how these should be
evaluated."
I'm not sure on their methods, and I'm not especially up for downloading random code from academic URLs.
I've contacted them regarding something else. If I get a reply, I'll push them to publish the code in a repo or as a gist, and see if they deliver. It's a shame they didn't feel the need to put it on github.