The book "Ripple-Down Rules: the Alternative to Machine Learning"
by Byeong Kang and myself contains two appendices on industry
applications of RDR and research demonstrated applications.
A early draft of the industry applications appendix we know of is
There may well be other industry applications, like Erudine for
example, that use an RDR approach but prefer not to make this
I was recently asked to prepare an impact statement about RDR for
another purpose. It is here