On the Regular Emptiness Problem of Subzero Automata
Henryk Michalewski, Matteo Mio, Mikołaj Bojańczyk · Electronic Proceedings in Theoretical Computer Science · 2016
Subzero automata is a class of tree automata whose acceptance condition can express probabilistic constraints. Our main result is that the problem of determining if a subzero automaton accepts some regular tree is decidable.