Yuta Tsuboi, Yuya Unno, et al.
AAAI 2011
The closure properties of the class of languages defined by real-time, online, multi-tape Turing machines are proved. The results obtained are, for the most part, negative and, as one would expect, asymmetric. It is shown that the results remain valid for a broad class of real-time devices. Finally, the position of the class of real-time definable languages in the 舠classical舡 linguistic hierarchy is established. © 1967, ACM. All rights reserved.
Yuta Tsuboi, Yuya Unno, et al.
AAAI 2011
L. Joskowicz, Elisha Sacks
aaai 1994
Yale Song, Zhen Wen, et al.
IJCAI 2013
Shuang Chen, Herbert Freeman
International Journal of Pattern Recognition and Artificial Intelligence