How do you establish an exact mapping to sth that is not exact, but only a buzzword term under which different people collect different methods?
Well, not that important. It's only important that the buzzword appears in the title!
Well, not that important. It's only important that the buzzword appears in the title!
Nonetheless, it's surely also true that it would be nice to suggest a constructive remedy; and, fortunately, one need not go farther than the abstract to find (a better approximation to) the precise statement that the authors are making:
> We construct an exact mapping from the variational renormalization group, first introduced by Kadanoff, [to] deep learning architectures based on Restricted Boltzmann Machines (RBMs).