Editorial
Cristian S. Calude and Michael J. Dinneen
This special issue includes revised and expanded versions of four of the best papers presented at the International Conference on Unconventional Computation and Natural Computation 2015 held in Auckland, New Zealand from 31 August to 4 September 2015.
Keywords: Infinity computer, nondeterministic recurrent neural networks, P automata having infinite runs on finite inputs, tangle machines, adiabatic quantum computing.