The deep Boltzmann machine on the Nishimori line with a finite number of layers is exactly solved by a theorem that expresses its pressure through a finite dimensional variational problem of min-max type. In the absence of magnetic fields the order parameter is shown to exhibit a phase transition whose dependence on the geometry of the system is investigated.
Frédéric Mila, Loïc Jean Pierre Herviou
Nicola Marzari, Iurii Timrov, Michele Kotiuga, Luca Binci