Wei Zhang, Timothy Wood, et al.
ICAC 2014
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.
Wei Zhang, Timothy Wood, et al.
ICAC 2014
John R. Kender, Rick Kjeldsen
IEEE Transactions on Pattern Analysis and Machine Intelligence
Susumu Horiguchi, Takeo Nakada
Journal of Parallel and Distributed Computing
Hironori Takeuchi, Tetsuya Nasukawa, et al.
Transactions of the Japanese Society for Artificial Intelligence